mirror of
https://github.com/MariaDB/server.git
synced 2025-10-31 02:46:29 +01:00
9e1fb104a3
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEF39AEP5WyjM2MAMF8WVvJMdM0dgFAmck77AACgkQ8WVvJMdM 0dgccQ/+Lls8fWt4D+gMPP7x+drJSO/IE/gZFt3ugbWF+/p3B2xXAs5AAE83wxEh QSbp4DCkb/9PnuakhLmzg0lFbxMUlh4rsJ1YyiuLB2J+YgKbAc36eQQf+rtYSipd DT5uRk36c9wOcOXo/mMv4APEvpPXBIBdIL4VvpKFbIOE7xT24Sp767zWXdXqrB1f JgOQdM2ct+bvSPC55oZ5p1kqyxwvd6K6+3RB3CIpwW9zrVSLg7enT3maLjj/761s jvlRae+Cv+r+Hit9XpmEH6n2FYVgIJ3o3WhdAHwN0kxKabXYTg7OCB7QxDZiUHI9 C/5goKmKaPB1PCQyuTQyLSyyK9a8nPfgn6tqw/p/ZKDQhKT9sWJv/5bSWecrVndx LLYifSTrFC/eXLzgPvCnNv/U8SjsZaAdMIKS681+qDJ0P5abghUIlGnMYTjYXuX1 1B6Vrr0bdrQ3V1CLB3tpkRjpUvicrsabtuAUAP65QnEG2G9UJXklOer+DE291Gsl f1I0o6C1zVGAOkUUD3QEYaHD8w7hlvyfKme5oXKUm3DOjaAar5UUKLdr6prxRZL4 ebhmGEy42Mf8fBYoeohIxmxgvv6h2Xd9xCukgPp8hFpqJGw8abg7JNZTTKH4h2IY J51RpD10h4eoi6WRn3opEcjexTGvZ+xNR7yYO5WxWw6VIre9IUA= =s+WW -----END PGP SIGNATURE----- Merge tag '11.4' into 11.6 MariaDB 11.4.4 release
3630 lines
136 KiB
Text
3630 lines
136 KiB
Text
drop table if exists t1,t2,t3;
|
|
drop view if exists v1,v2;
|
|
SET @save_optimizer_switch=@@optimizer_switch;
|
|
SET optimizer_switch='outer_join_with_cache=off';
|
|
CREATE TABLE t1 (S1 INT);
|
|
CREATE TABLE t2 (S1 INT);
|
|
INSERT INTO t1 VALUES (1);
|
|
INSERT INTO t2 VALUES (2);
|
|
SELECT * FROM t1 JOIN t2;
|
|
S1 S1
|
|
1 2
|
|
SELECT * FROM t1 INNER JOIN t2;
|
|
S1 S1
|
|
1 2
|
|
SELECT * from t1 JOIN t2 USING (S1);
|
|
S1
|
|
SELECT * FROM t1 INNER JOIN t2 USING (S1);
|
|
S1
|
|
SELECT * from t1 CROSS JOIN t2;
|
|
S1 S1
|
|
1 2
|
|
SELECT * from t1 LEFT JOIN t2 USING(S1);
|
|
S1
|
|
1
|
|
SELECT * from t1 LEFT JOIN t2 ON(t2.S1=2);
|
|
S1 S1
|
|
1 2
|
|
SELECT * from t1 RIGHT JOIN t2 USING(S1);
|
|
S1
|
|
2
|
|
SELECT * from t1 RIGHT JOIN t2 ON(t1.S1=1);
|
|
S1 S1
|
|
1 2
|
|
drop table t1,t2;
|
|
create table t1 (id int primary key);
|
|
create table t2 (id int);
|
|
insert into t1 values (75);
|
|
insert into t1 values (79);
|
|
insert into t1 values (78);
|
|
insert into t1 values (77);
|
|
replace into t1 values (76);
|
|
replace into t1 values (76);
|
|
insert into t1 values (104);
|
|
insert into t1 values (103);
|
|
insert into t1 values (102);
|
|
insert into t1 values (101);
|
|
insert into t1 values (105);
|
|
insert into t1 values (106);
|
|
insert into t1 values (107);
|
|
insert into t2 values (107),(75),(1000);
|
|
select t1.id, t2.id from t1, t2 where t2.id = t1.id;
|
|
id id
|
|
107 107
|
|
75 75
|
|
select t1.id, count(t2.id) from t1,t2 where t2.id = t1.id group by t1.id;
|
|
id count(t2.id)
|
|
75 1
|
|
107 1
|
|
select t1.id, count(t2.id) from t1,t2 where t2.id = t1.id group by t2.id;
|
|
id count(t2.id)
|
|
75 1
|
|
107 1
|
|
select t1.id,t2.id from t2 left join t1 on t1.id>=74 and t1.id<=0 where t2.id=75 and t1.id is null;
|
|
id id
|
|
NULL 75
|
|
explain select t1.id,t2.id from t2 left join t1 on t1.id>=74 and t1.id<=0 where t2.id=75 and t1.id is null;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 const PRIMARY NULL NULL NULL 0 Impossible ON condition
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
|
|
explain select t1.id, t2.id from t1, t2 where t2.id = t1.id and t1.id <0 and t1.id > 0;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
drop table t1,t2;
|
|
CREATE TABLE t1 (
|
|
id int(11) NOT NULL auto_increment,
|
|
token varchar(100) DEFAULT '' NOT NULL,
|
|
count int(11) DEFAULT '0' NOT NULL,
|
|
qty int(11),
|
|
phone char(1) DEFAULT '' NOT NULL,
|
|
timestamp datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
|
|
PRIMARY KEY (id),
|
|
KEY token (token(15)),
|
|
KEY timestamp (timestamp),
|
|
UNIQUE token_2 (token(75),count,phone)
|
|
);
|
|
INSERT INTO t1 VALUES (21,'e45703b64de71482360de8fec94c3ade',3,7800,'n','1999-12-23 17:22:21');
|
|
INSERT INTO t1 VALUES (22,'e45703b64de71482360de8fec94c3ade',4,5000,'y','1999-12-23 17:22:21');
|
|
INSERT INTO t1 VALUES (18,'346d1cb63c89285b2351f0ca4de40eda',3,13200,'b','1999-12-23 11:58:04');
|
|
INSERT INTO t1 VALUES (17,'ca6ddeb689e1b48a04146b1b5b6f936a',4,15000,'b','1999-12-23 11:36:53');
|
|
INSERT INTO t1 VALUES (16,'ca6ddeb689e1b48a04146b1b5b6f936a',3,13200,'b','1999-12-23 11:36:53');
|
|
INSERT INTO t1 VALUES (26,'a71250b7ed780f6ef3185bfffe027983',5,1500,'b','1999-12-27 09:44:24');
|
|
INSERT INTO t1 VALUES (24,'4d75906f3c37ecff478a1eb56637aa09',3,5400,'y','1999-12-23 17:29:12');
|
|
INSERT INTO t1 VALUES (25,'4d75906f3c37ecff478a1eb56637aa09',4,6500,'y','1999-12-23 17:29:12');
|
|
INSERT INTO t1 VALUES (27,'a71250b7ed780f6ef3185bfffe027983',3,6200,'b','1999-12-27 09:44:24');
|
|
INSERT INTO t1 VALUES (28,'a71250b7ed780f6ef3185bfffe027983',3,5400,'y','1999-12-27 09:44:36');
|
|
INSERT INTO t1 VALUES (29,'a71250b7ed780f6ef3185bfffe027983',4,17700,'b','1999-12-27 09:45:05');
|
|
CREATE TABLE t2 (
|
|
id int(11) NOT NULL auto_increment,
|
|
category int(11) DEFAULT '0' NOT NULL,
|
|
county int(11) DEFAULT '0' NOT NULL,
|
|
state int(11) DEFAULT '0' NOT NULL,
|
|
phones int(11) DEFAULT '0' NOT NULL,
|
|
nophones int(11) DEFAULT '0' NOT NULL,
|
|
PRIMARY KEY (id),
|
|
KEY category (category,county,state)
|
|
);
|
|
INSERT INTO t2 VALUES (3,2,11,12,5400,7800);
|
|
INSERT INTO t2 VALUES (4,2,25,12,6500,11200);
|
|
INSERT INTO t2 VALUES (5,1,37,6,10000,12000);
|
|
select a.id, b.category as catid, b.state as stateid, b.county as countyid from t1 a, t2 b ignore index (primary) where (a.token ='a71250b7ed780f6ef3185bfffe027983') and (a.count = b.id);
|
|
id catid stateid countyid
|
|
27 2 12 11
|
|
28 2 12 11
|
|
29 2 12 25
|
|
26 1 6 37
|
|
select a.id, b.category as catid, b.state as stateid, b.county as
|
|
countyid from t1 a, t2 b where (a.token =
|
|
'a71250b7ed780f6ef3185bfffe027983') and (a.count = b.id) order by a.id;
|
|
id catid stateid countyid
|
|
26 1 6 37
|
|
27 2 12 11
|
|
28 2 12 11
|
|
29 2 12 25
|
|
drop table t1, t2;
|
|
create table t1 (a int primary key);
|
|
insert into t1 values(1),(2);
|
|
select t1.a from t1 as t1 left join t1 as t2 using (a) left join t1 as t3 using (a) left join t1 as t4 using (a) left join t1 as t5 using (a) left join t1 as t6 using (a) left join t1 as t7 using (a) left join t1 as t8 using (a) left join t1 as t9 using (a) left join t1 as t10 using (a) left join t1 as t11 using (a) left join t1 as t12 using (a) left join t1 as t13 using (a) left join t1 as t14 using (a) left join t1 as t15 using (a) left join t1 as t16 using (a) left join t1 as t17 using (a) left join t1 as t18 using (a) left join t1 as t19 using (a) left join t1 as t20 using (a) left join t1 as t21 using (a) left join t1 as t22 using (a) left join t1 as t23 using (a) left join t1 as t24 using (a) left join t1 as t25 using (a) left join t1 as t26 using (a) left join t1 as t27 using (a) left join t1 as t28 using (a) left join t1 as t29 using (a) left join t1 as t30 using (a) left join t1 as t31 using (a);
|
|
a
|
|
1
|
|
2
|
|
select t1.a from t1 as t1 left join t1 as t2 using (a) left join t1 as t3 using (a) left join t1 as t4 using (a) left join t1 as t5 using (a) left join t1 as t6 using (a) left join t1 as t7 using (a) left join t1 as t8 using (a) left join t1 as t9 using (a) left join t1 as t10 using (a) left join t1 as t11 using (a) left join t1 as t12 using (a) left join t1 as t13 using (a) left join t1 as t14 using (a) left join t1 as t15 using (a) left join t1 as t16 using (a) left join t1 as t17 using (a) left join t1 as t18 using (a) left join t1 as t19 using (a) left join t1 as t20 using (a) left join t1 as t21 using (a) left join t1 as t22 using (a) left join t1 as t23 using (a) left join t1 as t24 using (a) left join t1 as t25 using (a) left join t1 as t26 using (a) left join t1 as t27 using (a) left join t1 as t28 using (a) left join t1 as t29 using (a) left join t1 as t30 using (a) left join t1 as t31 using (a) left join t1 as t32 using (a) left join t1 as t33 using (a) left join t1 as t34 using (a) left join t1 as t35 using (a) left join t1 as t36 using (a) left join t1 as t37 using (a) left join t1 as t38 using (a) left join t1 as t39 using (a) left join t1 as t40 using (a) left join t1 as t41 using (a) left join t1 as t42 using (a) left join t1 as t43 using (a) left join t1 as t44 using (a) left join t1 as t45 using (a) left join t1 as t46 using (a) left join t1 as t47 using (a) left join t1 as t48 using (a) left join t1 as t49 using (a) left join t1 as t50 using (a) left join t1 as t51 using (a) left join t1 as t52 using (a) left join t1 as t53 using (a) left join t1 as t54 using (a) left join t1 as t55 using (a) left join t1 as t56 using (a) left join t1 as t57 using (a) left join t1 as t58 using (a) left join t1 as t59 using (a) left join t1 as t60 using (a) left join t1 as t61 using (a) left join t1 as t62 using (a) left join t1 as t63 using (a) left join t1 as t64 using (a) left join t1 as t65 using (a);
|
|
ERROR HY000: Too many tables; MariaDB can only use XX tables in a join
|
|
select a from t1 as t1 left join t1 as t2 using (a) left join t1 as t3 using (a) left join t1 as t4 using (a) left join t1 as t5 using (a) left join t1 as t6 using (a) left join t1 as t7 using (a) left join t1 as t8 using (a) left join t1 as t9 using (a) left join t1 as t10 using (a) left join t1 as t11 using (a) left join t1 as t12 using (a) left join t1 as t13 using (a) left join t1 as t14 using (a) left join t1 as t15 using (a) left join t1 as t16 using (a) left join t1 as t17 using (a) left join t1 as t18 using (a) left join t1 as t19 using (a) left join t1 as t20 using (a) left join t1 as t21 using (a) left join t1 as t22 using (a) left join t1 as t23 using (a) left join t1 as t24 using (a) left join t1 as t25 using (a) left join t1 as t26 using (a) left join t1 as t27 using (a) left join t1 as t28 using (a) left join t1 as t29 using (a) left join t1 as t30 using (a) left join t1 as t31 using (a);
|
|
a
|
|
1
|
|
2
|
|
select a from t1 as t1 left join t1 as t2 using (a) left join t1 as t3 using (a) left join t1 as t4 using (a) left join t1 as t5 using (a) left join t1 as t6 using (a) left join t1 as t7 using (a) left join t1 as t8 using (a) left join t1 as t9 using (a) left join t1 as t10 using (a) left join t1 as t11 using (a) left join t1 as t12 using (a) left join t1 as t13 using (a) left join t1 as t14 using (a) left join t1 as t15 using (a) left join t1 as t16 using (a) left join t1 as t17 using (a) left join t1 as t18 using (a) left join t1 as t19 using (a) left join t1 as t20 using (a) left join t1 as t21 using (a) left join t1 as t22 using (a) left join t1 as t23 using (a) left join t1 as t24 using (a) left join t1 as t25 using (a) left join t1 as t26 using (a) left join t1 as t27 using (a) left join t1 as t28 using (a) left join t1 as t29 using (a) left join t1 as t30 using (a) left join t1 as t31 using (a) left join t1 as t32 using (a) left join t1 as t33 using (a) left join t1 as t34 using (a) left join t1 as t35 using (a) left join t1 as t36 using (a) left join t1 as t37 using (a) left join t1 as t38 using (a) left join t1 as t39 using (a) left join t1 as t40 using (a) left join t1 as t41 using (a) left join t1 as t42 using (a) left join t1 as t43 using (a) left join t1 as t44 using (a) left join t1 as t45 using (a) left join t1 as t46 using (a) left join t1 as t47 using (a) left join t1 as t48 using (a) left join t1 as t49 using (a) left join t1 as t50 using (a) left join t1 as t51 using (a) left join t1 as t52 using (a) left join t1 as t53 using (a) left join t1 as t54 using (a) left join t1 as t55 using (a) left join t1 as t56 using (a) left join t1 as t57 using (a) left join t1 as t58 using (a) left join t1 as t59 using (a) left join t1 as t60 using (a) left join t1 as t61 using (a) left join t1 as t62 using (a) left join t1 as t63 using (a) left join t1 as t64 using (a) left join t1 as t65 using (a);
|
|
ERROR HY000: Too many tables; MariaDB can only use XX tables in a join
|
|
drop table t1;
|
|
CREATE TABLE t1 (
|
|
a int(11) NOT NULL,
|
|
b int(11) NOT NULL,
|
|
PRIMARY KEY (a,b)
|
|
) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1,1),(1,2),(1,3),(1,4),(1,5),(1,6),(1,7),(2,3);
|
|
CREATE TABLE t2 (
|
|
a int(11) default NULL
|
|
) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES (2),(3);
|
|
SELECT t1.a,t2.a,b FROM t1,t2 WHERE t1.a=t2.a AND (t1.a=1 OR t1.a=2) AND b>=1 AND b<=3;
|
|
a a b
|
|
2 2 3
|
|
DROP TABLE t1, t2;
|
|
CREATE TABLE t1 (d DATE NOT NULL);
|
|
CREATE TABLE t2 (d DATE NOT NULL);
|
|
INSERT INTO t1 (d) VALUES ('2001-08-01'),('0000-00-00');
|
|
SELECT * FROM t1 LEFT JOIN t2 USING (d) WHERE t2.d IS NULL;
|
|
d
|
|
2001-08-01
|
|
0000-00-00
|
|
SELECT * FROM t1 LEFT JOIN t2 USING (d) WHERE d IS NULL;
|
|
d
|
|
0000-00-00
|
|
SELECT * from t1 WHERE t1.d IS NULL;
|
|
d
|
|
0000-00-00
|
|
SELECT * FROM t1 WHERE 1/0 IS NULL;
|
|
d
|
|
2001-08-01
|
|
0000-00-00
|
|
Warnings:
|
|
Warning 1365 Division by 0
|
|
DROP TABLE t1,t2;
|
|
CREATE TABLE t1 (
|
|
Document_ID varchar(50) NOT NULL default '',
|
|
Contractor_ID varchar(6) NOT NULL default '',
|
|
Language_ID char(3) NOT NULL default '',
|
|
Expiration_Date datetime default NULL,
|
|
Publishing_Date datetime default NULL,
|
|
Title text,
|
|
Column_ID varchar(50) NOT NULL default '',
|
|
PRIMARY KEY (Language_ID,Document_ID,Contractor_ID)
|
|
);
|
|
INSERT INTO t1 VALUES ('xep80','1','ger','2001-12-31 20:00:00','2001-11-12 10:58:00','Kartenbestellung - jetzt auch online','anle'),('','999998','',NULL,NULL,NULL,'');
|
|
CREATE TABLE t2 (
|
|
Contractor_ID char(6) NOT NULL default '',
|
|
Language_ID char(3) NOT NULL default '',
|
|
Document_ID char(50) NOT NULL default '',
|
|
CanRead char(1) default NULL,
|
|
Customer_ID int(11) NOT NULL default '0',
|
|
PRIMARY KEY (Contractor_ID,Language_ID,Document_ID,Customer_ID)
|
|
);
|
|
INSERT INTO t2 VALUES ('5','ger','xep80','1',999999),('1','ger','xep80','1',999999);
|
|
CREATE TABLE t3 (
|
|
Language_ID char(3) NOT NULL default '',
|
|
Column_ID char(50) NOT NULL default '',
|
|
Contractor_ID char(6) NOT NULL default '',
|
|
CanRead char(1) default NULL,
|
|
Active char(1) default NULL,
|
|
PRIMARY KEY (Language_ID,Column_ID,Contractor_ID)
|
|
);
|
|
INSERT INTO t3 VALUES ('ger','home','1','1','1'),('ger','Test','1','0','0'),('ger','derclu','1','0','0'),('ger','clubne','1','0','0'),('ger','philos','1','0','0'),('ger','clubko','1','0','0'),('ger','clubim','1','1','1'),('ger','progra','1','0','0'),('ger','progvo','1','0','0'),('ger','progsp','1','0','0'),('ger','progau','1','0','0'),('ger','progku','1','0','0'),('ger','progss','1','0','0'),('ger','nachl','1','0','0'),('ger','mitgli','1','0','0'),('ger','mitsu','1','0','0'),('ger','mitbus','1','0','0'),('ger','ergmar','1','1','1'),('ger','home','4','1','1'),('ger','derclu','4','1','1'),('ger','clubne','4','0','0'),('ger','philos','4','1','1'),('ger','clubko','4','1','1'),('ger','clubim','4','1','1'),('ger','progra','4','1','1'),('ger','progvo','4','1','1'),('ger','progsp','4','1','1'),('ger','progau','4','0','0'),('ger','progku','4','1','1'),('ger','progss','4','1','1'),('ger','nachl','4','1','1'),('ger','mitgli','4','0','0'),('ger','mitsu','4','0','0'),('ger','mitbus','4','0','0'),('ger','ergmar','4','1','1'),('ger','progra2','1','0','0'),('ger','archiv','4','1','1'),('ger','anmeld','4','1','1'),('ger','thema','4','1','1'),('ger','edito','4','1','1'),('ger','madis','4','1','1'),('ger','enma','4','1','1'),('ger','madis','1','1','1'),('ger','enma','1','1','1'),('ger','vorsch','4','0','0'),('ger','veranst','4','0','0'),('ger','anle','4','1','1'),('ger','redak','4','1','1'),('ger','nele','4','1','1'),('ger','aukt','4','1','1'),('ger','callcenter','4','1','1'),('ger','anle','1','0','0');
|
|
delete from t1 where Contractor_ID='999998';
|
|
insert into t1 (Contractor_ID) Values ('999998');
|
|
SELECT DISTINCT COUNT(t1.Title) FROM t1,
|
|
t2, t3 WHERE
|
|
t1.Document_ID='xep80' AND t1.Contractor_ID='1' AND
|
|
t1.Language_ID='ger' AND '2001-12-21 23:14:24' >=
|
|
Publishing_Date AND '2001-12-21 23:14:24' <= Expiration_Date AND
|
|
t1.Document_ID = t2.Document_ID AND
|
|
t1.Language_ID = t2.Language_ID AND
|
|
t1.Contractor_ID = t2.Contractor_ID AND (
|
|
t2.Customer_ID = '4' OR
|
|
t2.Customer_ID = '999999' OR
|
|
t2.Customer_ID = '1' )AND t2.CanRead
|
|
= '1' AND t1.Column_ID=t3.Column_ID AND
|
|
t1.Language_ID=t3.Language_ID AND (
|
|
t3.Contractor_ID = '4' OR
|
|
t3.Contractor_ID = '999999' OR
|
|
t3.Contractor_ID = '1') AND
|
|
t3.CanRead='1' AND t3.Active='1';
|
|
COUNT(t1.Title)
|
|
1
|
|
SELECT DISTINCT COUNT(t1.Title) FROM t1,
|
|
t2, t3 WHERE
|
|
t1.Document_ID='xep80' AND t1.Contractor_ID='1' AND
|
|
t1.Language_ID='ger' AND '2001-12-21 23:14:24' >=
|
|
Publishing_Date AND '2001-12-21 23:14:24' <= Expiration_Date AND
|
|
t1.Document_ID = t2.Document_ID AND
|
|
t1.Language_ID = t2.Language_ID AND
|
|
t1.Contractor_ID = t2.Contractor_ID AND (
|
|
t2.Customer_ID = '4' OR
|
|
t2.Customer_ID = '999999' OR
|
|
t2.Customer_ID = '1' )AND t2.CanRead
|
|
= '1' AND t1.Column_ID=t3.Column_ID AND
|
|
t1.Language_ID=t3.Language_ID AND (
|
|
t3.Contractor_ID = '4' OR
|
|
t3.Contractor_ID = '999999' OR
|
|
t3.Contractor_ID = '1') AND
|
|
t3.CanRead='1' AND t3.Active='1';
|
|
COUNT(t1.Title)
|
|
1
|
|
drop table t1,t2,t3;
|
|
CREATE TABLE t1 (
|
|
t1_id int(11) default NULL,
|
|
t2_id int(11) default NULL,
|
|
type enum('Cost','Percent') default NULL,
|
|
cost_unit enum('Cost','Unit') default NULL,
|
|
min_value double default NULL,
|
|
max_value double default NULL,
|
|
t3_id int(11) default NULL,
|
|
item_id int(11) default NULL
|
|
) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (12,5,'Percent','Cost',-1,0,-1,-1),(14,4,'Percent','Cost',-1,0,-1,-1),(18,5,'Percent','Cost',-1,0,-1,-1),(19,4,'Percent','Cost',-1,0,-1,-1),(20,5,'Percent','Cost',100,-1,22,291),(21,5,'Percent','Cost',100,-1,18,291),(22,1,'Percent','Cost',100,-1,6,291),(23,1,'Percent','Cost',100,-1,21,291),(24,1,'Percent','Cost',100,-1,9,291),(25,1,'Percent','Cost',100,-1,4,291),(26,1,'Percent','Cost',100,-1,20,291),(27,4,'Percent','Cost',100,-1,7,202),(28,1,'Percent','Cost',50,-1,-1,137),(29,2,'Percent','Cost',100,-1,4,354),(30,2,'Percent','Cost',100,-1,9,137),(93,2,'Cost','Cost',-1,10000000,-1,-1);
|
|
CREATE TABLE t2 (
|
|
id int(10) unsigned NOT NULL auto_increment,
|
|
name varchar(255) default NULL,
|
|
PRIMARY KEY (id)
|
|
) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES (1,'s1'),(2,'s2'),(3,'s3'),(4,'s4'),(5,'s5');
|
|
select straight_join t1.*, t2.* from t2, t1 where t2.id=t1.t2_id limit 2;
|
|
t1_id t2_id type cost_unit min_value max_value t3_id item_id id name
|
|
12 5 Percent Cost -1 0 -1 -1 5 s5
|
|
14 4 Percent Cost -1 0 -1 -1 4 s4
|
|
drop table t1,t2;
|
|
CREATE TABLE t1 (
|
|
siteid varchar(25) NOT NULL default '',
|
|
emp_id varchar(30) NOT NULL default '',
|
|
rate_code varchar(10) default NULL,
|
|
UNIQUE KEY site_emp (siteid,emp_id),
|
|
KEY siteid (siteid)
|
|
) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES ('rivercats','psmith','cust'), ('rivercats','KWalker','cust');
|
|
CREATE TABLE t2 (
|
|
siteid varchar(25) NOT NULL default '',
|
|
rate_code varchar(10) NOT NULL default '',
|
|
base_rate float NOT NULL default '0',
|
|
PRIMARY KEY (siteid,rate_code),
|
|
FULLTEXT KEY rate_code (rate_code)
|
|
) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES ('rivercats','cust',20);
|
|
SELECT emp.rate_code, lr.base_rate FROM t1 AS emp LEFT JOIN t2 AS lr USING (siteid, rate_code) WHERE emp.emp_id = 'psmith' AND lr.siteid = 'rivercats';
|
|
rate_code base_rate
|
|
cust 20
|
|
SELECT emp.rate_code, lr.base_rate FROM t1 AS emp LEFT JOIN t2 AS lr USING (siteid, rate_code) WHERE lr.siteid = 'rivercats' AND emp.emp_id = 'psmith';
|
|
rate_code base_rate
|
|
cust 20
|
|
SELECT rate_code, lr.base_rate FROM t1 AS emp LEFT JOIN t2 AS lr USING (siteid, rate_code) WHERE emp.emp_id = 'psmith' AND siteid = 'rivercats';
|
|
rate_code base_rate
|
|
cust 20
|
|
SELECT rate_code, lr.base_rate FROM t1 AS emp LEFT JOIN t2 AS lr USING (siteid, rate_code) WHERE siteid = 'rivercats' AND emp.emp_id = 'psmith';
|
|
rate_code base_rate
|
|
cust 20
|
|
drop table t1,t2;
|
|
CREATE TABLE t1 (ID INTEGER NOT NULL PRIMARY KEY, Value1 VARCHAR(255));
|
|
CREATE TABLE t2 (ID INTEGER NOT NULL PRIMARY KEY, Value2 VARCHAR(255));
|
|
INSERT INTO t1 VALUES (1, 'A');
|
|
INSERT INTO t2 VALUES (1, 'B');
|
|
SELECT * FROM t1 NATURAL JOIN t2 WHERE 1 AND (Value1 = 'A' AND Value2 <> 'B');
|
|
ID Value1 Value2
|
|
SELECT * FROM t1 NATURAL JOIN t2 WHERE 1 AND Value1 = 'A' AND Value2 <> 'B';
|
|
ID Value1 Value2
|
|
SELECT * FROM t1 NATURAL JOIN t2 WHERE (Value1 = 'A' AND Value2 <> 'B') AND 1;
|
|
ID Value1 Value2
|
|
drop table t1,t2;
|
|
CREATE TABLE t1 (a int);
|
|
CREATE TABLE t2 (b int);
|
|
CREATE TABLE t3 (c int);
|
|
SELECT * FROM t1 NATURAL JOIN t2 NATURAL JOIN t3;
|
|
a b c
|
|
DROP TABLE t1, t2, t3;
|
|
create table t1 (i int);
|
|
create table t2 (i int);
|
|
create table t3 (i int);
|
|
insert into t1 values(1),(2);
|
|
insert into t2 values(2),(3);
|
|
insert into t3 values (2),(4);
|
|
select * from t1 natural left join t2;
|
|
i
|
|
1
|
|
2
|
|
select * from t1 left join t2 on (t1.i=t2.i);
|
|
i i
|
|
1 NULL
|
|
2 2
|
|
select * from t1 natural left join t2 natural left join t3;
|
|
i
|
|
1
|
|
2
|
|
select * from t1 left join t2 on (t1.i=t2.i) left join t3 on (t2.i=t3.i);
|
|
i i i
|
|
1 NULL NULL
|
|
2 2 2
|
|
select * from t3 natural right join t2;
|
|
i
|
|
2
|
|
3
|
|
select * from t3 right join t2 on (t3.i=t2.i);
|
|
i i
|
|
2 2
|
|
NULL 3
|
|
select * from t3 natural right join t2 natural right join t1;
|
|
i
|
|
1
|
|
2
|
|
select * from t3 right join t2 on (t3.i=t2.i) right join t1 on (t2.i=t1.i);
|
|
i i i
|
|
NULL NULL 1
|
|
2 2 2
|
|
select * from t1,t2 natural left join t3 order by t1.i,t2.i,t3.i;
|
|
i i
|
|
1 2
|
|
1 3
|
|
2 2
|
|
2 3
|
|
select * from t1,t2 left join t3 on (t2.i=t3.i) order by t1.i,t2.i,t3.i;
|
|
i i i
|
|
1 2 2
|
|
1 3 NULL
|
|
2 2 2
|
|
2 3 NULL
|
|
select t1.i,t2.i,t3.i from t2 natural left join t3,t1 order by t1.i,t2.i,t3.i;
|
|
i i i
|
|
1 2 2
|
|
1 3 NULL
|
|
2 2 2
|
|
2 3 NULL
|
|
select t1.i,t2.i,t3.i from t2 left join t3 on (t2.i=t3.i),t1 order by t1.i,t2.i,t3.i;
|
|
i i i
|
|
1 2 2
|
|
1 3 NULL
|
|
2 2 2
|
|
2 3 NULL
|
|
select * from t1,t2 natural right join t3 order by t1.i,t2.i,t3.i;
|
|
i i
|
|
1 4
|
|
1 2
|
|
2 4
|
|
2 2
|
|
select * from t1,t2 right join t3 on (t2.i=t3.i) order by t1.i,t2.i,t3.i;
|
|
i i i
|
|
1 NULL 4
|
|
1 2 2
|
|
2 NULL 4
|
|
2 2 2
|
|
select t1.i,t2.i,t3.i from t2 natural right join t3,t1 order by t1.i,t2.i,t3.i;
|
|
i i i
|
|
1 NULL 4
|
|
1 2 2
|
|
2 NULL 4
|
|
2 2 2
|
|
select t1.i,t2.i,t3.i from t2 right join t3 on (t2.i=t3.i),t1 order by t1.i,t2.i,t3.i;
|
|
i i i
|
|
1 NULL 4
|
|
1 2 2
|
|
2 NULL 4
|
|
2 2 2
|
|
drop table t1,t2,t3;
|
|
CREATE TABLE t1 (a int, b int default 0, c int default 1);
|
|
INSERT INTO t1 (a) VALUES (1),(2),(3),(4),(5),(6),(7),(8);
|
|
INSERT INTO t1 (a) SELECT a + 8 FROM t1;
|
|
INSERT INTO t1 (a) SELECT a + 16 FROM t1;
|
|
CREATE TABLE t2 (a int, d int, e int default 0);
|
|
INSERT INTO t2 (a, d) VALUES (1,1),(2,2),(3,3),(4,4);
|
|
INSERT INTO t2 (a, d) SELECT a+4, a+4 FROM t2;
|
|
INSERT INTO t2 (a, d) SELECT a+8, a+8 FROM t2;
|
|
EXPLAIN
|
|
SELECT STRAIGHT_JOIN t2.e FROM t1,t2 WHERE t2.d=1 AND t1.b=t2.e
|
|
ORDER BY t1.b, t1.c;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 32 Using temporary; Using filesort
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 16 Using where; Using join buffer (flat, BNL join)
|
|
SELECT STRAIGHT_JOIN t2.e FROM t1,t2 WHERE t2.d=1 AND t1.b=t2.e
|
|
ORDER BY t1.b, t1.c;
|
|
e
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
DROP TABLE t1,t2;
|
|
create table t1 (c int, b int);
|
|
create table t2 (a int, b int);
|
|
create table t3 (b int, c int);
|
|
create table t4 (y int, c int);
|
|
create table t5 (y int, z int);
|
|
create table t6 (a int, c int);
|
|
insert into t1 values (10,1);
|
|
insert into t1 values (3 ,1);
|
|
insert into t1 values (3 ,2);
|
|
insert into t2 values (2, 1);
|
|
insert into t3 values (1, 3);
|
|
insert into t3 values (1,10);
|
|
insert into t4 values (11,3);
|
|
insert into t4 values (2, 3);
|
|
insert into t5 values (11,4);
|
|
insert into t6 values (2, 3);
|
|
create algorithm=merge view v1a as
|
|
select * from t1 natural join t2;
|
|
create algorithm=merge view v1b(a,b,c) as
|
|
select * from t1 natural join t2;
|
|
create algorithm=merge view v1c as
|
|
select b as a, c as b, a as c from t1 natural join t2;
|
|
create algorithm=merge view v1d(b, a, c) as
|
|
select a as c, c as b, b as a from t1 natural join t2;
|
|
create algorithm=merge view v2a as
|
|
select t1.c, t1.b, t2.a from t1 join (t2 join t4 on b + 1 = y) on t1.c = t4.c;
|
|
create algorithm=merge view v2b as
|
|
select t1.c as b, t1.b as a, t2.a as c
|
|
from t1 join (t2 join t4 on b + 1 = y) on t1.c = t4.c;
|
|
create algorithm=merge view v3a as
|
|
select * from t1 natural join t2 natural join t3;
|
|
create algorithm=merge view v3b as
|
|
select * from t1 natural join (t2 natural join t3);
|
|
create algorithm=merge view v4 as
|
|
select * from v2a natural join v3a;
|
|
select * from (t1 natural join t2) natural join (t3 natural join t4);
|
|
b c a y
|
|
1 3 2 11
|
|
1 3 2 2
|
|
select * from (t1 natural join t2) natural left join (t3 natural join t4);
|
|
b c a y
|
|
1 10 2 NULL
|
|
1 3 2 11
|
|
1 3 2 2
|
|
select * from (t3 natural join t4) natural right join (t1 natural join t2);
|
|
b c a y
|
|
1 10 2 NULL
|
|
1 3 2 11
|
|
1 3 2 2
|
|
select * from (t1 natural left join t2) natural left join (t3 natural left join t4);
|
|
b c a y
|
|
1 10 2 NULL
|
|
1 3 2 11
|
|
1 3 2 2
|
|
2 3 NULL NULL
|
|
select * from (t4 natural right join t3) natural right join (t2 natural right join t1);
|
|
b c a y
|
|
1 10 2 NULL
|
|
1 3 2 11
|
|
1 3 2 2
|
|
2 3 NULL NULL
|
|
select * from t1 natural join t2 natural join t3 natural join t4;
|
|
c b a y
|
|
3 1 2 11
|
|
3 1 2 2
|
|
select * from ((t1 natural join t2) natural join t3) natural join t4;
|
|
c b a y
|
|
3 1 2 11
|
|
3 1 2 2
|
|
select * from t1 natural join (t2 natural join (t3 natural join t4));
|
|
c b a y
|
|
3 1 2 11
|
|
3 1 2 2
|
|
select * from t5 natural right join (t4 natural right join ((t2 natural right join t1) natural right join t3));
|
|
y c b a z
|
|
11 3 1 2 4
|
|
2 3 1 2 NULL
|
|
NULL 10 1 2 NULL
|
|
select * from (t1 natural join t2), (t3 natural join t4);
|
|
b c a c b y
|
|
1 10 2 3 1 11
|
|
1 10 2 3 1 2
|
|
1 3 2 3 1 11
|
|
1 3 2 3 1 2
|
|
select * from t5 natural join ((t1 natural join t2), (t3 natural join t4));
|
|
y z b c a c b
|
|
11 4 1 10 2 3 1
|
|
11 4 1 3 2 3 1
|
|
select * from ((t1 natural join t2), (t3 natural join t4)) natural join t5;
|
|
y b c a c b z
|
|
11 1 10 2 3 1 4
|
|
11 1 3 2 3 1 4
|
|
select * from t5 natural join ((t1 natural join t2) cross join (t3 natural join t4));
|
|
y z b c a c b
|
|
11 4 1 10 2 3 1
|
|
11 4 1 3 2 3 1
|
|
select * from ((t1 natural join t2) cross join (t3 natural join t4)) natural join t5;
|
|
y b c a c b z
|
|
11 1 10 2 3 1 4
|
|
11 1 3 2 3 1 4
|
|
select * from (t1 join t2 using (b)) join (t3 join t4 using (c)) using (c);
|
|
c b a b y
|
|
3 1 2 1 11
|
|
3 1 2 1 2
|
|
select * from (t1 join t2 using (b)) natural join (t3 join t4 using (c));
|
|
b c a y
|
|
1 3 2 11
|
|
1 3 2 2
|
|
select a,b,c from (t1 natural join t2) natural join (t3 natural join t4)
|
|
where b + 1 = y or b + 10 = y group by b,c,a having min(b) < max(y) order by a;
|
|
a b c
|
|
2 1 3
|
|
select * from (t1 natural join t2) natural left join (t3 natural join t4)
|
|
where b + 1 = y or b + 10 = y group by b,c,a,y having min(b) < max(y) order by a, y;
|
|
b c a y
|
|
1 3 2 2
|
|
1 3 2 11
|
|
select * from (t3 natural join t4) natural right join (t1 natural join t2)
|
|
where b + 1 = y or b + 10 = y group by b,c,a,y having min(b) < max(y) order by a, y;
|
|
b c a y
|
|
1 3 2 2
|
|
1 3 2 11
|
|
select * from t1 natural join t2 where t1.c > t2.a;
|
|
b c a
|
|
1 10 2
|
|
1 3 2
|
|
select * from t1 natural join t2 where t1.b > t2.b;
|
|
b c a
|
|
select * from t1 natural left join (t4 natural join t5) where t5.z is not NULL;
|
|
c b y z
|
|
3 1 11 4
|
|
3 2 11 4
|
|
select * from t1 join (t2 join t4 on b + 1 = y) on t1.c = t4.c;
|
|
c b a b y c
|
|
3 1 2 1 2 3
|
|
3 2 2 1 2 3
|
|
select * from (t2 join t4 on b + 1 = y) join t1 on t1.c = t4.c;
|
|
a b y c c b
|
|
2 1 2 3 3 1
|
|
2 1 2 3 3 2
|
|
select * from t1 natural join (t2 join t4 on b + 1 = y);
|
|
c b a y
|
|
3 1 2 2
|
|
select * from (t1 cross join t2) join (t3 cross join t4) on (a < y and t2.b < t3.c);
|
|
c b a b b c y c
|
|
10 1 2 1 1 3 11 3
|
|
10 1 2 1 1 10 11 3
|
|
3 1 2 1 1 3 11 3
|
|
3 1 2 1 1 10 11 3
|
|
3 2 2 1 1 3 11 3
|
|
3 2 2 1 1 10 11 3
|
|
select * from (t1, t2) join (t3, t4) on (a < y and t2.b < t3.c);
|
|
c b a b b c y c
|
|
10 1 2 1 1 3 11 3
|
|
10 1 2 1 1 10 11 3
|
|
3 1 2 1 1 3 11 3
|
|
3 1 2 1 1 10 11 3
|
|
3 2 2 1 1 3 11 3
|
|
3 2 2 1 1 10 11 3
|
|
select * from (t1 natural join t2) join (t3 natural join t4) on a = y;
|
|
b c a c b y
|
|
1 10 2 3 1 2
|
|
1 3 2 3 1 2
|
|
select * from ((t3 join (t1 join t2 on c > a) on t3.b < t2.a) join t4 on y > t1.c) join t5 on z = t1.b + 3;
|
|
b c c b a b y c y z
|
|
1 3 10 1 2 1 11 3 11 4
|
|
1 10 10 1 2 1 11 3 11 4
|
|
1 3 3 1 2 1 11 3 11 4
|
|
1 10 3 1 2 1 11 3 11 4
|
|
select * from t1 natural join t2 where t1.b > 0;
|
|
b c a
|
|
1 10 2
|
|
1 3 2
|
|
select * from t1 natural join (t4 natural join t5) where t4.y > 7;
|
|
c b y z
|
|
3 1 11 4
|
|
3 2 11 4
|
|
select * from (t4 natural join t5) natural join t1 where t4.y > 7;
|
|
c y z b
|
|
3 11 4 1
|
|
3 11 4 2
|
|
select * from t1 natural left join (t4 natural join t5) where t4.y > 7;
|
|
c b y z
|
|
3 1 11 4
|
|
3 2 11 4
|
|
select * from (t4 natural join t5) natural right join t1 where t4.y > 7;
|
|
c b y z
|
|
3 1 11 4
|
|
3 2 11 4
|
|
select * from (t1 natural join t2) join (t3 natural join t4) on t1.b = t3.b;
|
|
b c a c b y
|
|
1 10 2 3 1 11
|
|
1 10 2 3 1 2
|
|
1 3 2 3 1 11
|
|
1 3 2 3 1 2
|
|
select t1.*, t2.* from t1 natural join t2;
|
|
c b a b
|
|
10 1 2 1
|
|
3 1 2 1
|
|
select t1.*, t2.*, t3.*, t4.* from (t1 natural join t2) natural join (t3 natural join t4);
|
|
c b a b b c y c
|
|
3 1 2 1 1 3 11 3
|
|
3 1 2 1 1 3 2 3
|
|
select * from (select * from t1 natural join t2) as t12
|
|
natural join
|
|
(select * from t3 natural join t4) as t34;
|
|
b c a y
|
|
1 3 2 11
|
|
1 3 2 2
|
|
select * from (select * from t1 natural join t2) as t12
|
|
natural left join
|
|
(select * from t3 natural join t4) as t34;
|
|
b c a y
|
|
1 10 2 NULL
|
|
1 3 2 11
|
|
1 3 2 2
|
|
select * from (select * from t3 natural join t4) as t34
|
|
natural right join
|
|
(select * from t1 natural join t2) as t12;
|
|
b c a y
|
|
1 10 2 NULL
|
|
1 3 2 11
|
|
1 3 2 2
|
|
select * from v1a;
|
|
b c a
|
|
1 10 2
|
|
1 3 2
|
|
select * from v1b;
|
|
a b c
|
|
1 10 2
|
|
1 3 2
|
|
select * from v1c;
|
|
a b c
|
|
1 10 2
|
|
1 3 2
|
|
select * from v1d;
|
|
b a c
|
|
2 10 1
|
|
2 3 1
|
|
select * from v2a;
|
|
c b a
|
|
3 1 2
|
|
3 2 2
|
|
select * from v2b;
|
|
b a c
|
|
3 1 2
|
|
3 2 2
|
|
select * from v3a;
|
|
b c a
|
|
1 10 2
|
|
1 3 2
|
|
select * from v3b;
|
|
c b a
|
|
10 1 2
|
|
3 1 2
|
|
select * from v4;
|
|
c b a
|
|
3 1 2
|
|
select * from v1a natural join v2a;
|
|
b c a
|
|
1 3 2
|
|
select v2a.* from v1a natural join v2a;
|
|
c b a
|
|
3 1 2
|
|
select * from v1b join v2a on v1b.b = v2a.c;
|
|
a b c c b a
|
|
1 3 2 3 1 2
|
|
1 3 2 3 2 2
|
|
select * from v1c join v2a on v1c.b = v2a.c;
|
|
a b c c b a
|
|
1 3 2 3 1 2
|
|
1 3 2 3 2 2
|
|
select * from v1d join v2a on v1d.a = v2a.c;
|
|
b a c c b a
|
|
2 3 1 3 1 2
|
|
2 3 1 3 2 2
|
|
select * from v1a join (t3 natural join t4) on a = y;
|
|
b c a c b y
|
|
1 10 2 3 1 2
|
|
1 3 2 3 1 2
|
|
select * from t1 natural join (t3 cross join t4);
|
|
ERROR 23000: Column 'c' in FROM is ambiguous
|
|
select * from (t3 cross join t4) natural join t1;
|
|
ERROR 23000: Column 'c' in FROM is ambiguous
|
|
select * from t1 join (t2, t3) using (b);
|
|
ERROR 23000: Column 'b' in FROM is ambiguous
|
|
select * from ((t1 natural join t2), (t3 natural join t4)) natural join t6;
|
|
ERROR 23000: Column 'c' in FROM is ambiguous
|
|
select * from ((t1 natural join t2), (t3 natural join t4)) natural join t6;
|
|
ERROR 23000: Column 'c' in FROM is ambiguous
|
|
select * from t6 natural join ((t1 natural join t2), (t3 natural join t4));
|
|
ERROR 23000: Column 'c' in FROM is ambiguous
|
|
select * from (t1 join t2 on t1.b=t2.b) natural join (t3 natural join t4);
|
|
ERROR 23000: Column 'b' in FROM is ambiguous
|
|
select * from (t3 natural join t4) natural join (t1 join t2 on t1.b=t2.b);
|
|
ERROR 23000: Column 'b' in FROM is ambiguous
|
|
select * from (t3 join (t4 natural join t5) on (b < z))
|
|
natural join
|
|
(t1 natural join t2);
|
|
ERROR 23000: Column 'c' in FROM is ambiguous
|
|
select * from (t1 natural join t2) natural join (t3 join (t4 natural join t5) on (b < z));
|
|
ERROR 23000: Column 'c' in FROM is ambiguous
|
|
select t1.b from v1a;
|
|
ERROR 42S22: Unknown column 't1.b' in 'SELECT'
|
|
select * from v1a join v1b on t1.b = t2.b;
|
|
ERROR 42S22: Unknown column 't1.b' in 'ON'
|
|
select
|
|
statistics.TABLE_NAME, statistics.COLUMN_NAME, statistics.TABLE_CATALOG, statistics.TABLE_SCHEMA, statistics.NON_UNIQUE, statistics.INDEX_SCHEMA, statistics.INDEX_NAME, statistics.SEQ_IN_INDEX, statistics.COLLATION, statistics.SUB_PART, statistics.PACKED, statistics.NULLABLE, statistics.INDEX_TYPE, statistics.COMMENT,
|
|
columns.TABLE_CATALOG, columns.TABLE_SCHEMA, columns.COLUMN_DEFAULT, columns.IS_NULLABLE, columns.DATA_TYPE, columns.CHARACTER_MAXIMUM_LENGTH, columns.CHARACTER_OCTET_LENGTH, columns.NUMERIC_PRECISION, columns.NUMERIC_SCALE, columns.CHARACTER_SET_NAME, columns.COLLATION_NAME, columns.COLUMN_TYPE, columns.COLUMN_KEY, columns.EXTRA, columns.COLUMN_COMMENT
|
|
from information_schema.statistics join information_schema.columns using(table_name,column_name) where table_name='global_priv';
|
|
TABLE_NAME COLUMN_NAME TABLE_CATALOG TABLE_SCHEMA NON_UNIQUE INDEX_SCHEMA INDEX_NAME SEQ_IN_INDEX COLLATION SUB_PART PACKED NULLABLE INDEX_TYPE COMMENT TABLE_CATALOG TABLE_SCHEMA COLUMN_DEFAULT IS_NULLABLE DATA_TYPE CHARACTER_MAXIMUM_LENGTH CHARACTER_OCTET_LENGTH NUMERIC_PRECISION NUMERIC_SCALE CHARACTER_SET_NAME COLLATION_NAME COLUMN_TYPE COLUMN_KEY EXTRA COLUMN_COMMENT
|
|
global_priv Host def mysql 0 mysql PRIMARY 1 A NULL NULL BTREE def mysql '' NO char 255 765 NULL NULL utf8mb3 utf8mb3_bin char(255) PRI
|
|
global_priv User def mysql 0 mysql PRIMARY 2 A NULL NULL BTREE def mysql '' NO char 128 384 NULL NULL utf8mb3 utf8mb3_bin char(128) PRI
|
|
Warnings:
|
|
Warning 1286 Unknown storage engine 'InnoDB'
|
|
Warning 1286 Unknown storage engine 'InnoDB'
|
|
Warning 1286 Unknown storage engine 'InnoDB'
|
|
drop table t1;
|
|
drop table t2;
|
|
drop table t3;
|
|
drop table t4;
|
|
drop table t5;
|
|
drop table t6;
|
|
drop view v1a;
|
|
drop view v1b;
|
|
drop view v1c;
|
|
drop view v1d;
|
|
drop view v2a;
|
|
drop view v2b;
|
|
drop view v3a;
|
|
drop view v3b;
|
|
drop view v4;
|
|
create table t1 (a1 int, a2 int);
|
|
create table t2 (a1 int, b int);
|
|
create table t3 (c1 int, c2 int);
|
|
create table t4 (c2 int);
|
|
insert into t1 values (1,1);
|
|
insert into t2 values (1,1);
|
|
insert into t3 values (1,1);
|
|
insert into t4 values (1);
|
|
select * from t1 join t2 using (a1) join t3 on b=c1 join t4 using (c2);
|
|
c2 a1 a2 b c1
|
|
1 1 1 1 1
|
|
select * from t3 join (t1 join t2 using (a1)) on b=c1 join t4 using (c2);
|
|
c2 c1 a1 a2 b
|
|
1 1 1 1 1
|
|
select a2 from t1 join t2 using (a1) join t3 on b=c1 join t4 using (c2);
|
|
a2
|
|
1
|
|
select a2 from t3 join (t1 join t2 using (a1)) on b=c1 join t4 using (c2);
|
|
a2
|
|
1
|
|
select a2 from ((t1 join t2 using (a1)) join t3 on b=c1) join t4 using (c2);
|
|
a2
|
|
1
|
|
select a2 from ((t1 natural join t2) join t3 on b=c1) natural join t4;
|
|
a2
|
|
1
|
|
drop table t1,t2,t3,t4;
|
|
create table t1 (c int, b int);
|
|
create table t2 (a int, b int);
|
|
create table t3 (b int, c int);
|
|
create table t4 (y int, c int);
|
|
create table t5 (y int, z int);
|
|
insert into t1 values (3,2);
|
|
insert into t2 values (1,2);
|
|
insert into t3 values (2,3);
|
|
insert into t4 values (1,3);
|
|
insert into t5 values (1,4);
|
|
prepare stmt1 from "select * from ((t3 natural join (t1 natural join t2))
|
|
natural join t4) natural join t5";
|
|
execute stmt1;
|
|
y c b a z
|
|
1 3 2 1 4
|
|
select * from ((t3 natural join (t1 natural join t2)) natural join t4)
|
|
natural join t5;
|
|
y c b a z
|
|
1 3 2 1 4
|
|
drop table t1, t2, t3, t4, t5;
|
|
CREATE TABLE t1 (ID INTEGER, Name VARCHAR(50));
|
|
CREATE TABLE t2 (Test_ID INTEGER);
|
|
CREATE VIEW v1 (Test_ID, Description) AS SELECT ID, Name FROM t1;
|
|
CREATE TABLE tv1 SELECT Description AS Name FROM v1 JOIN t2
|
|
USING (Test_ID);
|
|
DESCRIBE tv1;
|
|
Field Type Null Key Default Extra
|
|
Name varchar(50) YES NULL
|
|
CREATE TABLE tv2 SELECT Description AS Name FROM v1 JOIN t2
|
|
ON v1.Test_ID = t2.Test_ID;
|
|
DESCRIBE tv2;
|
|
Field Type Null Key Default Extra
|
|
Name varchar(50) YES NULL
|
|
DROP VIEW v1;
|
|
DROP TABLE t1,t2,tv1,tv2;
|
|
create table t1 (a int, b int);
|
|
insert into t1 values
|
|
(NULL, 1),
|
|
(NULL, 2),
|
|
(NULL, 3),
|
|
(NULL, 4);
|
|
create table t2 (a int not null, primary key(a));
|
|
insert into t2 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t3 (a int not null, primary key(a));
|
|
insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
flush status;
|
|
select * from t1, t2, t3 where t3.a=t1.a and t2.a=t1.b;
|
|
a b a a
|
|
explain select * from t1, t2, t3 where t3.a=t1.a and t2.a=t1.b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where
|
|
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 Using index
|
|
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using index
|
|
We expect rnd_next=5, and read_key must be 0 because of short-cutting:
|
|
show status like 'Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_retry 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_deleted 0
|
|
Handler_read_rnd_next 5
|
|
drop table t1, t2, t3;
|
|
create table t1 (a int);
|
|
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t2 (a int, b int, filler char(100), key(a), key(b));
|
|
create table t3 (a int, b int, filler char(100), key(a), key(b));
|
|
insert into t2
|
|
select @a:= A.a + 10*(B.a + 10*C.a), @a, 'filler' from t1 A, t1 B, t1 C;
|
|
insert into t3 select * from t2 where a < 800;
|
|
explain select * from t2,t3 where t2.a < 200 and t2.b=t3.b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t2 ALL a,b NULL NULL NULL 1000 Using where
|
|
1 SIMPLE t3 ref b b 5 test.t2.b 1
|
|
drop table t1, t2, t3;
|
|
create table t1 (a int) engine=myisam;
|
|
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t2 (a int, b int, primary key(a));
|
|
insert into t2 select @v:=A.a+10*B.a, @v from t1 A, t1 B;
|
|
explain select * from t1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 10
|
|
show status like 'Last_query_cost';
|
|
Variable_name Value
|
|
Last_query_cost 0.011600
|
|
select 'The cost of accessing t1 (dont care if it changes' '^';
|
|
The cost of accessing t1 (dont care if it changes^
|
|
The cost of accessing t1 (dont care if it changes^
|
|
select 'vv: Following query must use ALL(t1), eq_ref(A), eq_ref(B): vv' Z;
|
|
Z
|
|
vv: Following query must use ALL(t1), eq_ref(A), eq_ref(B): vv
|
|
select @@myisam.optimizer_disk_read_ratio;
|
|
@@myisam.optimizer_disk_read_ratio
|
|
0.020000
|
|
set global myisam.optimizer_disk_read_ratio=0;
|
|
explain select * from t1, t2 A, t2 B where A.a = t1.a and B.a=A.b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 10 Using where
|
|
1 SIMPLE A eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where
|
|
1 SIMPLE B eq_ref PRIMARY PRIMARY 4 test.A.b 1
|
|
show status like 'Last_query_cost';
|
|
Variable_name Value
|
|
Last_query_cost 0.046590
|
|
select '^^: The above should be ~= 40 + cost(select * from t1). Value less than 40 is an error' Z;
|
|
Z
|
|
^^: The above should be ~= 40 + cost(select * from t1). Value less than 40 is an error
|
|
set global myisam.optimizer_disk_read_ratio=default;
|
|
select @@myisam.optimizer_disk_read_ratio;
|
|
@@myisam.optimizer_disk_read_ratio
|
|
0.020000
|
|
drop table t1, t2;
|
|
CREATE TABLE t1 (a INT PRIMARY KEY, b INT);
|
|
CREATE TABLE t2 (c INT PRIMARY KEY, d INT);
|
|
INSERT INTO t1 VALUES(1,NULL),(2,NULL),(3,NULL),(4,NULL);
|
|
INSERT INTO t1 SELECT a + 4, b FROM t1;
|
|
INSERT INTO t1 SELECT a + 8, b FROM t1;
|
|
INSERT INTO t1 SELECT a + 16, b FROM t1;
|
|
INSERT INTO t1 SELECT a + 32, b FROM t1;
|
|
INSERT INTO t1 SELECT a + 64, b FROM t1;
|
|
INSERT INTO t2 SELECT a, b FROM t1;
|
|
EXPLAIN SELECT * FROM t1 JOIN t2 ON b=c ORDER BY a LIMIT 2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using where
|
|
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1
|
|
EXPLAIN SELECT * FROM t1 JOIN t2 ON a=c ORDER BY a LIMIT 2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 2
|
|
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1
|
|
SELECT * FROM t1 JOIN t2 ON b=c ORDER BY a LIMIT 2;
|
|
a b c d
|
|
SELECT * FROM t1 JOIN t2 ON a=c ORDER BY a LIMIT 2;
|
|
a b c d
|
|
1 NULL 1 NULL
|
|
2 NULL 2 NULL
|
|
EXPLAIN SELECT * FROM t1 JOIN t2 ON b=c ORDER BY a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 128 Using where; Using filesort
|
|
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1
|
|
EXPLAIN SELECT * FROM t1 JOIN t2 ON a=c ORDER BY a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 128 Using filesort
|
|
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1
|
|
SELECT * FROM t1 JOIN t2 ON b=c ORDER BY a;
|
|
a b c d
|
|
SELECT * FROM t1 JOIN t2 ON a=c ORDER BY a;
|
|
a b c d
|
|
1 NULL 1 NULL
|
|
2 NULL 2 NULL
|
|
3 NULL 3 NULL
|
|
4 NULL 4 NULL
|
|
5 NULL 5 NULL
|
|
6 NULL 6 NULL
|
|
7 NULL 7 NULL
|
|
8 NULL 8 NULL
|
|
9 NULL 9 NULL
|
|
10 NULL 10 NULL
|
|
11 NULL 11 NULL
|
|
12 NULL 12 NULL
|
|
13 NULL 13 NULL
|
|
14 NULL 14 NULL
|
|
15 NULL 15 NULL
|
|
16 NULL 16 NULL
|
|
17 NULL 17 NULL
|
|
18 NULL 18 NULL
|
|
19 NULL 19 NULL
|
|
20 NULL 20 NULL
|
|
21 NULL 21 NULL
|
|
22 NULL 22 NULL
|
|
23 NULL 23 NULL
|
|
24 NULL 24 NULL
|
|
25 NULL 25 NULL
|
|
26 NULL 26 NULL
|
|
27 NULL 27 NULL
|
|
28 NULL 28 NULL
|
|
29 NULL 29 NULL
|
|
30 NULL 30 NULL
|
|
31 NULL 31 NULL
|
|
32 NULL 32 NULL
|
|
33 NULL 33 NULL
|
|
34 NULL 34 NULL
|
|
35 NULL 35 NULL
|
|
36 NULL 36 NULL
|
|
37 NULL 37 NULL
|
|
38 NULL 38 NULL
|
|
39 NULL 39 NULL
|
|
40 NULL 40 NULL
|
|
41 NULL 41 NULL
|
|
42 NULL 42 NULL
|
|
43 NULL 43 NULL
|
|
44 NULL 44 NULL
|
|
45 NULL 45 NULL
|
|
46 NULL 46 NULL
|
|
47 NULL 47 NULL
|
|
48 NULL 48 NULL
|
|
49 NULL 49 NULL
|
|
50 NULL 50 NULL
|
|
51 NULL 51 NULL
|
|
52 NULL 52 NULL
|
|
53 NULL 53 NULL
|
|
54 NULL 54 NULL
|
|
55 NULL 55 NULL
|
|
56 NULL 56 NULL
|
|
57 NULL 57 NULL
|
|
58 NULL 58 NULL
|
|
59 NULL 59 NULL
|
|
60 NULL 60 NULL
|
|
61 NULL 61 NULL
|
|
62 NULL 62 NULL
|
|
63 NULL 63 NULL
|
|
64 NULL 64 NULL
|
|
65 NULL 65 NULL
|
|
66 NULL 66 NULL
|
|
67 NULL 67 NULL
|
|
68 NULL 68 NULL
|
|
69 NULL 69 NULL
|
|
70 NULL 70 NULL
|
|
71 NULL 71 NULL
|
|
72 NULL 72 NULL
|
|
73 NULL 73 NULL
|
|
74 NULL 74 NULL
|
|
75 NULL 75 NULL
|
|
76 NULL 76 NULL
|
|
77 NULL 77 NULL
|
|
78 NULL 78 NULL
|
|
79 NULL 79 NULL
|
|
80 NULL 80 NULL
|
|
81 NULL 81 NULL
|
|
82 NULL 82 NULL
|
|
83 NULL 83 NULL
|
|
84 NULL 84 NULL
|
|
85 NULL 85 NULL
|
|
86 NULL 86 NULL
|
|
87 NULL 87 NULL
|
|
88 NULL 88 NULL
|
|
89 NULL 89 NULL
|
|
90 NULL 90 NULL
|
|
91 NULL 91 NULL
|
|
92 NULL 92 NULL
|
|
93 NULL 93 NULL
|
|
94 NULL 94 NULL
|
|
95 NULL 95 NULL
|
|
96 NULL 96 NULL
|
|
97 NULL 97 NULL
|
|
98 NULL 98 NULL
|
|
99 NULL 99 NULL
|
|
100 NULL 100 NULL
|
|
101 NULL 101 NULL
|
|
102 NULL 102 NULL
|
|
103 NULL 103 NULL
|
|
104 NULL 104 NULL
|
|
105 NULL 105 NULL
|
|
106 NULL 106 NULL
|
|
107 NULL 107 NULL
|
|
108 NULL 108 NULL
|
|
109 NULL 109 NULL
|
|
110 NULL 110 NULL
|
|
111 NULL 111 NULL
|
|
112 NULL 112 NULL
|
|
113 NULL 113 NULL
|
|
114 NULL 114 NULL
|
|
115 NULL 115 NULL
|
|
116 NULL 116 NULL
|
|
117 NULL 117 NULL
|
|
118 NULL 118 NULL
|
|
119 NULL 119 NULL
|
|
120 NULL 120 NULL
|
|
121 NULL 121 NULL
|
|
122 NULL 122 NULL
|
|
123 NULL 123 NULL
|
|
124 NULL 124 NULL
|
|
125 NULL 125 NULL
|
|
126 NULL 126 NULL
|
|
127 NULL 127 NULL
|
|
128 NULL 128 NULL
|
|
DROP TABLE IF EXISTS t1,t2;
|
|
#
|
|
# Bug #42116: Mysql crash on specific query
|
|
#
|
|
CREATE TABLE t1 (a INT);
|
|
CREATE TABLE t2 (a INT);
|
|
CREATE TABLE t3 (a INT, INDEX (a));
|
|
CREATE TABLE t4 (a INT);
|
|
CREATE TABLE t5 (a INT);
|
|
CREATE TABLE t6 (a INT);
|
|
INSERT INTO t1 VALUES (1), (1), (1);
|
|
INSERT INTO t2 VALUES
|
|
(2), (2), (2), (2), (2), (2), (2), (2), (2), (2);
|
|
INSERT INTO t3 VALUES
|
|
(3), (3), (3), (3), (3), (3), (3), (3), (3), (3);
|
|
EXPLAIN
|
|
SELECT *
|
|
FROM
|
|
t1 JOIN t2 ON t1.a = t2.a
|
|
LEFT JOIN
|
|
(
|
|
(
|
|
t3 LEFT JOIN t4 ON t3.a = t4.a
|
|
)
|
|
LEFT JOIN
|
|
(
|
|
t5 LEFT JOIN t6 ON t5.a = t6.a
|
|
)
|
|
ON t4.a = t5.a
|
|
)
|
|
ON t1.a = t3.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
|
|
1 SIMPLE t3 ref a a 5 test.t1.a 1 Using where; Using index
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 0 Using where
|
|
1 SIMPLE t5 ALL NULL NULL NULL NULL 0 Using where
|
|
1 SIMPLE t6 ALL NULL NULL NULL NULL 0 Using where
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 10 Using where; Using join buffer (flat, BNL join)
|
|
SELECT *
|
|
FROM
|
|
t1 JOIN t2 ON t1.a = t2.a
|
|
LEFT JOIN
|
|
(
|
|
(
|
|
t3 LEFT JOIN t4 ON t3.a = t4.a
|
|
)
|
|
LEFT JOIN
|
|
(
|
|
t5 LEFT JOIN t6 ON t5.a = t6.a
|
|
)
|
|
ON t4.a = t5.a
|
|
)
|
|
ON t1.a = t3.a;
|
|
a a a a a a
|
|
DROP TABLE t1,t2,t3,t4,t5,t6;
|
|
#
|
|
# Bug#48483: crash in get_best_combination()
|
|
#
|
|
CREATE TABLE t1(f1 INT);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE VIEW v1 AS SELECT 1 FROM t1 LEFT JOIN t1 AS t2 on 1=1;
|
|
EXPLAIN EXTENDED
|
|
SELECT 1 FROM v1 right join v1 AS v2 ON RAND();
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select 1 AS `1` from `test`.`t1` left join `test`.`t1` `t2` on(1 = 1) left join (`test`.`t1` left join `test`.`t1` `t2` on(1 = 1)) on(rand()) where 1
|
|
DROP VIEW v1;
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug#52177 crash with explain, row comparison, join, text field
|
|
#
|
|
CREATE TABLE t1 (a TINYINT, b TEXT, KEY (a));
|
|
INSERT INTO t1 VALUES (0,''),(0,'');
|
|
FLUSH TABLES;
|
|
EXPLAIN SELECT 1 FROM t1 LEFT JOIN t1 a ON 1
|
|
WHERE ROW(t1.a, 1111.11) = ROW(1111.11, 1111.11) AND
|
|
ROW(t1.b, 1111.11) <=> ROW('','');
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug #50335: Assertion `!(order->used & map)' in eq_ref_table
|
|
#
|
|
CREATE TABLE t1 (a INT NOT NULL, b INT NOT NULL, PRIMARY KEY (a,b));
|
|
INSERT INTO t1 VALUES (0,0), (1,1);
|
|
SELECT * FROM t1 STRAIGHT_JOIN t1 t2 ON t1.a=t2.a AND t1.a=t2.b ORDER BY t2.a, t1.a;
|
|
a b a b
|
|
0 0 0 0
|
|
1 1 1 1
|
|
DROP TABLE t1;
|
|
End of 5.0 tests.
|
|
CREATE TABLE t1 (f1 int);
|
|
CREATE TABLE t2 (f1 int);
|
|
INSERT INTO t2 VALUES (1);
|
|
CREATE VIEW v1 AS SELECT * FROM t2;
|
|
PREPARE stmt FROM 'UPDATE t2 AS A NATURAL JOIN v1 B SET B.f1 = 1';
|
|
EXECUTE stmt;
|
|
EXECUTE stmt;
|
|
DEALLOCATE PREPARE stmt;
|
|
DROP VIEW v1;
|
|
DROP TABLE t1, t2;
|
|
CREATE TABLE t1(a CHAR(9),b INT,KEY(b),KEY(a)) ENGINE=MYISAM;
|
|
CREATE TABLE t2(a CHAR(9),b INT,KEY(b),KEY(a)) ENGINE=MYISAM;
|
|
INSERT INTO t1 VALUES ('1',null),(null,null);
|
|
INSERT INTO t2 VALUES ('1',null),(null,null);
|
|
CREATE TABLE mm1(a CHAR(9),b INT,KEY(b),KEY(a))
|
|
ENGINE=MERGE UNION=(t1,t2);
|
|
SELECT t1.a FROM mm1,t1;
|
|
a
|
|
NULL
|
|
1
|
|
NULL
|
|
1
|
|
NULL
|
|
1
|
|
NULL
|
|
1
|
|
DROP TABLE t1, t2, mm1;
|
|
#
|
|
# Bug #54468: crash after item's print() function when ordering/grouping
|
|
# by subquery
|
|
#
|
|
CREATE TABLE t1(a INT, b INT);
|
|
INSERT INTO t1 VALUES (), ();
|
|
SELECT 1 FROM t1
|
|
GROUP BY
|
|
GREATEST(t1.a,
|
|
(SELECT 1 FROM
|
|
(SELECT t1.b FROM t1,t1 t2
|
|
ORDER BY t1.a, t1.a LIMIT 1) AS d)
|
|
);
|
|
1
|
|
1
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug #53544: Server hangs during JOIN query in stored procedure called
|
|
# twice in a row
|
|
#
|
|
CREATE TABLE t1(c INT);
|
|
INSERT INTO t1 VALUES (1), (2);
|
|
PREPARE stmt FROM "SELECT t2.c AS f1 FROM t1 LEFT JOIN
|
|
t1 t2 ON t1.c=t2.c RIGHT JOIN
|
|
t1 t3 ON t1.c=t3.c
|
|
GROUP BY f1;";
|
|
EXECUTE stmt;
|
|
f1
|
|
1
|
|
2
|
|
EXECUTE stmt;
|
|
f1
|
|
1
|
|
2
|
|
DEALLOCATE PREPARE stmt;
|
|
DROP TABLE t1;
|
|
#
|
|
# Bug LP:798597: Incorrect "Duplicate entry" error with views and
|
|
# GROUP BY
|
|
#
|
|
CREATE TABLE t1 ( f1 int NOT NULL , f2 int NOT NULL ) ;
|
|
INSERT INTO t1 VALUES (214,0),(6,6);
|
|
CREATE TABLE t2 ( f2 int) ;
|
|
INSERT INTO t2 VALUES (88),(88);
|
|
CREATE ALGORITHM=MERGE VIEW v1 AS SELECT t1.f1, t2.f2 FROM (t2 LEFT JOIN t1 ON (t2.f2 <> t1.f1)) WHERE (t1.f2 <= 0) ;
|
|
CREATE ALGORITHM=MERGE VIEW v2 AS SELECT t1.f1, t2.f2 FROM (t2 LEFT JOIN t1 ON (t2.f2 <> t1.f1)) WHERE (t1.f2 <= 0 or t1.f2 is null) ;
|
|
SELECT f1 , MIN(f2) FROM v1 GROUP BY f1;
|
|
f1 MIN(f2)
|
|
214 88
|
|
SELECT f1 , MIN(f2) FROM v2 GROUP BY f1;
|
|
f1 MIN(f2)
|
|
214 88
|
|
drop table t1,t2;
|
|
drop view v1,v2;
|
|
#
|
|
# BUG#47217 Lost optimization caused slowdown & wrong result.
|
|
#
|
|
CREATE TABLE t1 (pk INT, v VARCHAR(2), PRIMARY KEY(pk));
|
|
CREATE INDEX ix1 ON t1(v);
|
|
CREATE TABLE t2 (pk INT, v VARCHAR(2), PRIMARY KEY(pk));
|
|
CREATE INDEX ix2 ON t2(v);
|
|
INSERT INTO t1 VALUES (1,'a'),(2,NULL);
|
|
INSERT INTO t2 VALUES (1,NULL);
|
|
EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.v = t2.v ORDER BY 1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
EXPLAIN SELECT * FROM t1 JOIN t2 ON t1.v = t2.v;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
INSERT INTO t1 VALUES (3,'b'),(4,NULL),(5,'c'),(6,'cc'),(7,'d'),
|
|
(8,'dd'),(9,'e'),(10,'ee');
|
|
INSERT INTO t2 VALUES (2,NULL);
|
|
ANALYZE TABLE t1,t2;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status Engine-independent statistics collected
|
|
test.t1 analyze status OK
|
|
test.t2 analyze status Engine-independent statistics collected
|
|
test.t2 analyze status OK
|
|
explain SELECT * FROM t1 JOIN t2 ON t1.v = t2.v WHERE t2.v IS NULL ORDER BY 1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t2 ref ix2 ix2 11 const 2 Using index condition; Using temporary; Using filesort
|
|
1 SIMPLE t1 ref ix1 ix1 11 test.t2.v 1
|
|
FLUSH STATUS;
|
|
SELECT * FROM t1 JOIN t2 ON t1.v = t2.v WHERE t2.v IS NULL ORDER BY 1;
|
|
pk v pk v
|
|
SHOW STATUS LIKE 'Handler_read_%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 1
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_retry 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_deleted 0
|
|
Handler_read_rnd_next 1
|
|
DROP TABLE t1, t2;
|
|
End of 5.1 tests
|
|
#
|
|
# Bug #43368: STRAIGHT_JOIN DOESN'T WORK FOR NESTED JOINS
|
|
#
|
|
create table t1(c1 int primary key, c2 char(10)) engine=myisam;
|
|
create table t2(c1 int primary key, c2 char(10), ref_t1 int) engine=myisam;
|
|
create table t3(c1 int primary key, c2 char(10), ref_t1 int) engine=myisam;
|
|
create table t4(c1 int primary key, c2 char(10), ref_t1 int) engine=myisam;
|
|
insert into t1 values(1,'a');
|
|
insert into t2 values(1,'a', 1);
|
|
insert into t3 values(1,'a', 1);
|
|
insert into t3 values(2,'b',2);
|
|
insert into t4 values(1,'a', 1);
|
|
insert into t4 values(2,'a', 2);
|
|
insert into t4 values(3,'a', 3);
|
|
insert into t4 values(4,'a', 4);
|
|
insert into t1 values(2,'b');
|
|
insert into t1 values(3,'c');
|
|
EXPLAIN
|
|
SELECT *
|
|
FROM t4 JOIN
|
|
(t1 JOIN t3 ON t3.ref_t1=t1.c1 JOIN t2 ON t2.ref_t1=t1.c1)
|
|
ON t4.ref_t1=t1.c1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t2 system NULL NULL NULL NULL 1
|
|
1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join)
|
|
EXPLAIN
|
|
SELECT STRAIGHT_JOIN *
|
|
FROM t4 JOIN
|
|
(t1 JOIN t3 ON t3.ref_t1=t1.c1 JOIN t2 ON t2.ref_t1=t1.c1)
|
|
ON t4.ref_t1=t1.c1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 Using where
|
|
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t4.ref_t1 1
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (incremental, BNL join)
|
|
EXPLAIN
|
|
SELECT *
|
|
FROM t4 STRAIGHT_JOIN
|
|
(t1 JOIN t3 ON t3.ref_t1=t1.c1 JOIN t2 ON t2.ref_t1=t1.c1)
|
|
ON t4.ref_t1=t1.c1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 Using where
|
|
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t4.ref_t1 1
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join)
|
|
drop table t1,t2,t3,t4;
|
|
End of 5.2 tests
|
|
#
|
|
# BUG#724275: Crash in JOIN::optimize in maria-5.3
|
|
#
|
|
create table t1 (a int);
|
|
insert into t1 values (1),(2);
|
|
insert into t1 select * from t1;
|
|
create table t2 (a int, b int, key(a,b));
|
|
insert into t2 values (1,1),(1,2),(1,3),(1,4),(2,5),(2,6),(2,7),(2,8),(2,9);
|
|
insert into t2 select * from t2;
|
|
insert into t2 select * from t2;
|
|
insert into t2 select * from t2;
|
|
create table t3 (a int, b int, key(a));
|
|
insert into t3 values (1,1),(2,2);
|
|
select * from
|
|
t3 straight_join t1 straight_join t2 force index(a)
|
|
where t2.a=1 and t2.b=t1.a and t1.a=t3.b and t3.a=1;
|
|
a b a a b
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
1 1 1 1 1
|
|
drop table t1,t2,t3;
|
|
#
|
|
# BUG#729067/730466: unexpected 'Range checked for each record'
|
|
# for queries with OR in WHERE clause
|
|
#
|
|
CREATE TABLE t1 (f1 int, f2 int) ;
|
|
INSERT INTO t1 VALUES (4,0),(5,1);
|
|
CREATE TABLE t2 (f1 int, f2 int, KEY (f2)) ;
|
|
INSERT INTO t2 VALUES (5,7), (8,9);
|
|
EXPLAIN
|
|
SELECT * FROM t1 STRAIGHT_JOIN t2 ON t2.f1 = t1.f1
|
|
WHERE t1.f1<>0 OR t1.f2<>0 AND t1.f1 = t2.f2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
|
|
1 SIMPLE t2 ALL f2 NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
SELECT * FROM t1 STRAIGHT_JOIN t2 ON t2.f1 = t1.f1
|
|
WHERE t1.f1<>0 OR t1.f2<>0 AND t1.f1 = t2.f2;
|
|
f1 f2 f1 f2
|
|
5 1 5 7
|
|
DROP TABLE t1,t2;
|
|
CREATE TABLE t1(f1 int PRIMARY KEY, f2 int) ;
|
|
INSERT INTO t1 VALUES (9,4), (10,9);
|
|
CREATE TABLE t2(f1 int PRIMARY KEY, f2 int) ;
|
|
INSERT INTO t2 VALUES (9,4), (10,9);
|
|
EXPLAIN
|
|
SELECT STRAIGHT_JOIN * FROM t1 JOIN t2 ON t2.f2 = t1.f1
|
|
WHERE t1.f1 IN (SELECT f1 FROM t1) AND t1.f1 = t2.f1 OR t1.f1 = 9;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 2 Using where
|
|
1 PRIMARY t2 ALL PRIMARY NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
|
|
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using index
|
|
SELECT STRAIGHT_JOIN * FROM t1 JOIN t2 ON t2.f2 = t1.f1
|
|
WHERE t1.f1 IN (SELECT f1 FROM t1) AND t1.f1 = t2.f1 OR t1.f1 = 9;
|
|
f1 f2 f1 f2
|
|
9 4 10 9
|
|
DROP TABLE t1,t2;
|
|
create table t1 (i time key);
|
|
insert into t1 values ('1:1:1'), ('2:2:2');
|
|
create table t2 (i time);
|
|
insert into t2 values ('1:1:1');
|
|
select t2.i from t1 left join t2 on t2.i = t1.i where t1.i = '1:1:1';
|
|
i
|
|
01:01:01
|
|
drop table t1,t2;
|
|
#
|
|
# BUG#954900: unexpected empty set due to an invalid build of key ref
|
|
#
|
|
CREATE TABLE t1 (dog_id int(10), birthday date, PRIMARY KEY (dog_id,birthday));
|
|
INSERT INTO t1 VALUES (5918,'2004-07-22');
|
|
CREATE TABLE t2 (dog_id int(10) unsigned, t_id char(1), birthday date, a_id int(10),
|
|
PRIMARY KEY (dog_id,t_id,birthday,a_id));
|
|
INSERT INTO t2 VALUES
|
|
(5918,'N','2004-07-22',5216551), (5918,'N','2004-07-22',5223640),
|
|
(5918,'N','2004-07-22',5389491), (5918,'N','2004-07-22',5749434),
|
|
(5918,'N','2004-07-22',5992424), (5922,'N','2005-06-30',5076957),
|
|
(5924,'N','2000-08-11',20264), (5924,'N','2000-08-11',64251),
|
|
(5924,'N','2000-08-11',74748), (5924,'N','2000-08-11',87590),
|
|
(5924,'N','2000-08-11',104695), (5924,'N','2000-08-11',133136),
|
|
(5924,'N','2000-08-11',5027806), (5924,'N','2000-08-11',5076957),
|
|
(5924,'N','2000-08-11',5166821), (5924,'N','2000-08-11',5181896),
|
|
(5924,'N','2000-08-11',5217908), (5924,'N','2000-08-11',5220812),
|
|
(5924,'N','2000-08-11',5226473), (5924,'N','2000-08-11',5339111),
|
|
(5925,'N','2005-02-10',19227), (5925,'N','2005-02-10',74529),
|
|
(5925,'N','2005-02-10',74748), (5927,'N','2005-08-18',20264),
|
|
(5927,'N','2005-08-18',58364), (5929,'N','2005-01-19',58364),
|
|
(5935,'N','2006-03-10',19227), (5935,'N','2006-03-10',64251),
|
|
(5935,'N','2006-03-10',5222400), (5935,'N','2006-03-10',5226473),
|
|
(5936,'N','2004-10-29',5015032), (5937,'N','2002-04-05',11237),
|
|
(5937,'N','2002-04-05',23911), (5937,'N','2002-04-05',112133),
|
|
(5937,'N','2002-04-05',169721), (5937,'N','2002-04-05',170650),
|
|
(5937,'N','2002-04-05',5014494), (5937,'N','2002-04-05',5166009),
|
|
(5937,'N','2002-04-05',5181871), (5937,'N','2002-04-05',5213380),
|
|
(5937,'N','2002-04-05',5214875), (5937,'N','2002-04-05',5895062),
|
|
(5938,'N','2006-03-24',11237), (5938,'N','2006-03-24',19227),
|
|
(5938,'N','2006-03-24',23911), (5938,'N','2006-03-24',58364),
|
|
(5938,'N','2006-03-24',64251), (5938,'N','2006-03-24',111716),
|
|
(5938,'N','2006-03-24',112702), (5938,'N','2006-03-24',133136),
|
|
(5938,'N','2006-03-24',168718), (5938,'N','2006-03-24',5137136),
|
|
(5938,'N','2006-03-24',5161519), (5938,'N','2006-03-24',5168120),
|
|
(5938,'N','2006-03-24',5219034), (6234,'N','2006-06-02',103058),
|
|
(6234,'N','2006-06-02',5146844), (6235,'N','2006-06-01',12900),
|
|
(6235,'N','2006-06-01',20264), (6235,'N','2006-06-01',64251),
|
|
(6235,'N','2006-06-01',75160), (6235,'N','2006-06-01',5014494),
|
|
(6235,'N','2006-06-01',5181638), (6236,'N','2006-06-06',112595),
|
|
(6236,'N','2006-06-06',5219601), (6236,'N','2006-06-06',5808374);
|
|
CREATE TABLE t3 (dog_id int(10) unsigned);
|
|
INSERT INTO t3 VALUES (5918);
|
|
CREATE TABLE t4 (dog_id int(10), t_id char(1), birthday date, KEY (t_id));
|
|
INSERT INTO t4 VALUES (5918,'N','2004-07-22'), (5919,'N','2004-07-20');
|
|
CREATE TABLE t5 (dog_id int(10) unsigned, UNIQUE KEY (dog_id));
|
|
INSERT INTO t5 VALUES (5918);
|
|
SET @tmp_optimizer_switch=@@optimizer_switch;
|
|
SET optimizer_switch='index_condition_pushdown=off';
|
|
EXPLAIN
|
|
SELECT * FROM t5 DU, t1 D, t4 DT, t2 DSA, t3 DSAR
|
|
WHERE DU.dog_id=D.dog_id AND D.dog_id=DT.dog_id AND D.birthday=DT.birthday AND
|
|
DT.t_id=DSA.t_id AND DT.birthday=DSA.birthday AND DSA.dog_id=DSAR.dog_id;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE DU system dog_id NULL NULL NULL 1
|
|
1 SIMPLE D system PRIMARY NULL NULL NULL 1
|
|
1 SIMPLE DSAR system NULL NULL NULL NULL 1
|
|
1 SIMPLE DSA ref PRIMARY PRIMARY 4 const 4 Using where; Using index
|
|
1 SIMPLE DT ref t_id t_id 5 test.DSA.t_id 1 Using where
|
|
SELECT * FROM t5 DU, t1 D, t4 DT, t2 DSA, t3 DSAR
|
|
WHERE DU.dog_id=D.dog_id AND D.dog_id=DT.dog_id AND D.birthday=DT.birthday AND
|
|
DT.t_id=DSA.t_id AND DT.birthday=DSA.birthday AND DSA.dog_id=DSAR.dog_id;
|
|
dog_id dog_id birthday dog_id t_id birthday dog_id t_id birthday a_id dog_id
|
|
5918 5918 2004-07-22 5918 N 2004-07-22 5918 N 2004-07-22 5216551 5918
|
|
5918 5918 2004-07-22 5918 N 2004-07-22 5918 N 2004-07-22 5223640 5918
|
|
5918 5918 2004-07-22 5918 N 2004-07-22 5918 N 2004-07-22 5389491 5918
|
|
5918 5918 2004-07-22 5918 N 2004-07-22 5918 N 2004-07-22 5749434 5918
|
|
5918 5918 2004-07-22 5918 N 2004-07-22 5918 N 2004-07-22 5992424 5918
|
|
SET optimizer_switch=@tmp_optimizer_switch;
|
|
DROP TABLE t1,t2,t3,t4,t5;
|
|
#
|
|
# MDEV-4752: Segfault during parsing of illegal query
|
|
#
|
|
SELECT * FROM t5 JOIN (t1 JOIN t2 UNION SELECT * FROM t3 JOIN t4);
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT * FROM t3 JOIN t4)' at line 1
|
|
#
|
|
# MDEV-4959: join of const table with NULL fields
|
|
#
|
|
CREATE TABLE t1 (i1 int) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (NULL);
|
|
CREATE TABLE t2 (i2 int, a int, b int) ENGINE=MyISAM;
|
|
CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;
|
|
INSERT INTO t2 VALUES (NULL,1,2),(NULL,2,3);
|
|
SELECT * FROM t1 JOIN v2 ON i1 = i2 WHERE a < b;
|
|
i1 i2 a b
|
|
EXPLAIN EXTENDED
|
|
SELECT * FROM t1 JOIN v2 ON i1 = i2 WHERE a < b;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00 Using where
|
|
Warnings:
|
|
Note 1003 /* select#1 */ select NULL AS `i1`,`v2`.`i2` AS `i2`,`v2`.`a` AS `a`,`v2`.`b` AS `b` from `test`.`v2` where `v2`.`i2` = NULL and `v2`.`a` < `v2`.`b`
|
|
DROP VIEW v2;
|
|
DROP TABLE t1,t2;
|
|
SET optimizer_switch=@save_optimizer_switch;
|
|
#
|
|
# MDEV-16512
|
|
# Server crashes in find_field_in_table_ref on 2nd execution of SP referring to
|
|
# non-existing field
|
|
#
|
|
CREATE TABLE t (i INT);
|
|
CREATE PROCEDURE p() SELECT t1.f FROM t AS t1 JOIN t AS t2 USING (f);
|
|
CALL p;
|
|
ERROR 42S22: Unknown column 'f' in 'FROM'
|
|
CALL p;
|
|
ERROR 42S22: Unknown column 'f' in 'FROM'
|
|
FLUSH TABLES;
|
|
CALL p;
|
|
ERROR 42S22: Unknown column 'f' in 'FROM'
|
|
DROP TABLE t;
|
|
CREATE TABLE t (f INT);
|
|
CALL p;
|
|
f
|
|
DROP TABLE t;
|
|
CREATE TABLE t (i INT);
|
|
CALL p;
|
|
ERROR 42S22: Unknown column 'f' in 'FROM'
|
|
CALL p;
|
|
ERROR 42S22: Unknown column 'f' in 'FROM'
|
|
DROP PROCEDURE p;
|
|
DROP TABLE t;
|
|
CREATE TABLE t1 (a INT, b INT);
|
|
CREATE TABLE t2 (a INT);
|
|
CREATE TABLE t3 (a INT, c INT);
|
|
CREATE TABLE t4 (a INT, c INT);
|
|
CREATE TABLE t5 (a INT, c INT);
|
|
CREATE PROCEDURE p1() SELECT c FROM t1 JOIN (t2 LEFT JOIN t3 USING (a) LEFT JOIN t4 USING (a)
|
|
LEFT JOIN t5 USING (a)) USING (a);
|
|
CALL p1;
|
|
ERROR 23000: Column 'c' in SELECT is ambiguous
|
|
CALL p1;
|
|
ERROR 23000: Column 'c' in SELECT is ambiguous
|
|
DROP PROCEDURE p1;
|
|
DROP TABLE t1,t2,t3,t4,t5;
|
|
#
|
|
# MDEV-19421: Embedding inner joins
|
|
#
|
|
create table t1 (a int);
|
|
insert into t1 values (7), (5), (3);
|
|
create table s1 (b int);
|
|
insert into s1 values (7), (5), (3);
|
|
create table t2 (a int);
|
|
insert into t2 values (5), (1), (7);
|
|
create table s2 (b int);
|
|
insert into s2 values (5), (1), (7);
|
|
create table t3 (a int);
|
|
insert into t3 values (2), (7), (3);
|
|
create table t4 (a int);
|
|
insert into t4 values (4), (7), (9), (5);
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3 on t2.a=t3.a on t1.a=t2.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a` = `test`.`t1`.`a` and `test`.`t3`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3 on t2.a=t3.a on t1.a=t2.a;
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 left join t3 on t2.a=t3.a on t1.a=t2.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t1`.`a`) where `test`.`t2`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 left join t3 on t2.a=t3.a on t1.a=t2.a;
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
5 5 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 right join t3 on t2.a=t3.a on t1.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t3` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`t1`.`a`) where `test`.`t3`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 right join t3 on t2.a=t3.a on t1.a=t3.a;
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
3 NULL 3
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3 using(a) using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a` = `test`.`t1`.`a` and `test`.`t3`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3 using(a) using(a);
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 left join t3 using(a) using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t1`.`a`) where `test`.`t2`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 left join t3 using(a) using(a);
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
5 5 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 right join t3 using(a) using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t3` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`t1`.`a`) where `test`.`t3`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 right join t3 using(a) using(a);
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
3 NULL 3
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3 on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`a` = `test`.`t2`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3 on t2.a=t3.a;
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 left join t3 on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t2`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 left join t3 on t2.a=t3.a;
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
7 5 NULL
|
|
5 5 NULL
|
|
3 5 NULL
|
|
7 1 NULL
|
|
5 1 NULL
|
|
3 1 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 right join t3 on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t3` left join (`test`.`t1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 right join t3 on t2.a=t3.a;
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
NULL NULL 2
|
|
NULL NULL 3
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3 on t1.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3 on t1.a=t3.a;
|
|
t1_a t2_a t3_a
|
|
7 5 7
|
|
7 1 7
|
|
7 7 7
|
|
3 5 3
|
|
3 1 3
|
|
3 7 3
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 left join t3 on t1.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t1`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 left join t3 on t1.a=t3.a;
|
|
t1_a t2_a t3_a
|
|
7 5 7
|
|
7 1 7
|
|
7 7 7
|
|
3 5 3
|
|
3 1 3
|
|
3 7 3
|
|
5 5 NULL
|
|
5 1 NULL
|
|
5 7 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 right join t3 on t1.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t3` left join (`test`.`t1` join `test`.`t2`) on(`test`.`t1`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 right join t3 on t1.a=t3.a;
|
|
t1_a t2_a t3_a
|
|
7 5 7
|
|
3 5 3
|
|
7 1 7
|
|
3 1 3
|
|
7 7 7
|
|
3 7 3
|
|
NULL NULL 2
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join (t2 join t3 on t2.a=t3.a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`a` = `test`.`t2`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join (t2 join t3 on t2.a=t3.a);
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join (t2 left join t3 on t2.a=t3.a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t2`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join (t2 left join t3 on t2.a=t3.a);
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
7 5 NULL
|
|
5 5 NULL
|
|
3 5 NULL
|
|
7 1 NULL
|
|
5 1 NULL
|
|
3 1 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join (t2 right join t3 on t2.a=t3.a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t3` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join (t2 right join t3 on t2.a=t3.a);
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
7 NULL 2
|
|
5 NULL 2
|
|
3 NULL 2
|
|
7 NULL 3
|
|
5 NULL 3
|
|
3 NULL 3
|
|
explain extended select *
|
|
from s1 join t2 join t3 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`s1`.`b` AS `b` from `test`.`s1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`a` = `test`.`t2`.`a`
|
|
select *
|
|
from s1 join t2 join t3 using(a);
|
|
a b
|
|
7 7
|
|
7 5
|
|
7 3
|
|
explain extended select *
|
|
from s1 join t2 left join t3 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`s1`.`b` AS `b` from `test`.`s1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t2`.`a`) where 1
|
|
select *
|
|
from s1 join t2 left join t3 using(a);
|
|
a b
|
|
7 7
|
|
7 5
|
|
7 3
|
|
5 7
|
|
5 5
|
|
5 3
|
|
1 7
|
|
1 5
|
|
1 3
|
|
explain extended select *
|
|
from s1 join t2 right join t3 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`s1`.`b` AS `b` from `test`.`t3` left join (`test`.`s1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select *
|
|
from s1 join t2 right join t3 using(a);
|
|
a b
|
|
7 7
|
|
7 5
|
|
7 3
|
|
2 NULL
|
|
3 NULL
|
|
explain extended select s1.b, t2.a as t2_a, t3.a as t3_a
|
|
from s1 join t2 join t3 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `b`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`s1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`a` = `test`.`t2`.`a`
|
|
select s1.b, t2.a as t2_a, t3.a as t3_a
|
|
from s1 join t2 join t3 using(a);
|
|
b t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
explain extended select s1.b, t2.a as t2_a, t3.a as t3_a
|
|
from s1 join t2 left join t3 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `b`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`s1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t2`.`a`) where 1
|
|
select s1.b, t2.a as t2_a, t3.a as t3_a
|
|
from s1 join t2 left join t3 using(a);
|
|
b t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
7 5 NULL
|
|
5 5 NULL
|
|
3 5 NULL
|
|
7 1 NULL
|
|
5 1 NULL
|
|
3 1 NULL
|
|
explain extended select s1.b, t2.a as t2_a, t3.a as t3_a
|
|
from s1 join t2 right join t3 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `b`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t3` left join (`test`.`s1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select s1.b, t2.a as t2_a, t3.a as t3_a
|
|
from s1 join t2 right join t3 using(a);
|
|
b t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
NULL NULL 2
|
|
NULL NULL 3
|
|
explain extended select s1.b, t2.a as t2_a, t3.a as t3_a
|
|
from (s1 join t2) right join t3 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `b`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t3` left join (`test`.`s1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select s1.b, t2.a as t2_a, t3.a as t3_a
|
|
from (s1 join t2) right join t3 using(a);
|
|
b t2_a t3_a
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
NULL NULL 2
|
|
NULL NULL 3
|
|
explain extended select *
|
|
from s1 join t2 natural join t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`s1`.`b` AS `b` from `test`.`s1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`a` = `test`.`t2`.`a`
|
|
select *
|
|
from s1 join t2 natural join t3;
|
|
a b
|
|
7 7
|
|
7 5
|
|
7 3
|
|
explain extended select *
|
|
from s1 join t2 natural left join t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`s1`.`b` AS `b` from `test`.`s1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t2`.`a`) where 1
|
|
select *
|
|
from s1 join t2 natural left join t3;
|
|
a b
|
|
7 7
|
|
7 5
|
|
7 3
|
|
5 7
|
|
5 5
|
|
5 3
|
|
1 7
|
|
1 5
|
|
1 3
|
|
explain extended select *
|
|
from s1 join t2 natural right join t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`s1`.`b` AS `b` from `test`.`t3` left join (`test`.`s1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select *
|
|
from s1 join t2 natural right join t3;
|
|
a b
|
|
7 7
|
|
7 5
|
|
7 3
|
|
2 NULL
|
|
3 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` join `test`.`t3`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3;
|
|
t1_a t2_a t3_a
|
|
7 5 2
|
|
5 5 2
|
|
3 5 2
|
|
7 1 2
|
|
5 1 2
|
|
3 1 2
|
|
7 7 2
|
|
5 7 2
|
|
3 7 2
|
|
7 5 7
|
|
5 5 7
|
|
3 5 7
|
|
7 1 7
|
|
5 1 7
|
|
3 1 7
|
|
7 7 7
|
|
5 7 7
|
|
3 7 7
|
|
7 5 3
|
|
5 5 3
|
|
3 5 3
|
|
7 1 3
|
|
5 1 3
|
|
3 1 3
|
|
7 7 3
|
|
5 7 3
|
|
3 7 3
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3
|
|
where t1.a=t2.a and t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a` = `test`.`t1`.`a` and `test`.`t3`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from t1 join t2 join t3
|
|
where t1.a=t2.a and t2.a=t3.a;
|
|
t1_a t2_a t3_a
|
|
7 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` join `test`.`t4` where `test`.`t3`.`a` = `test`.`t2`.`a` and `test`.`t4`.`a` = `test`.`t2`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 left join t3 join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t3`.`a` = `test`.`t2`.`a` and `test`.`t4`.`a` = `test`.`t2`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 left join t3 join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 5 NULL NULL
|
|
5 5 NULL NULL
|
|
3 5 NULL NULL
|
|
7 1 NULL NULL
|
|
5 1 NULL NULL
|
|
3 1 NULL NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 left join t3 left join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` left join (`test`.`t3` left join `test`.`t4` on(`test`.`t4`.`a` = `test`.`t2`.`a`)) on(`test`.`t3`.`a` = `test`.`t2`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 left join t3 left join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 5 NULL NULL
|
|
5 5 NULL NULL
|
|
3 5 NULL NULL
|
|
7 1 NULL NULL
|
|
5 1 NULL NULL
|
|
3 1 NULL NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 left join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` left join (`test`.`t4` join `test`.`t3`) on(`test`.`t3`.`a` = `test`.`t2`.`a` and `test`.`t4`.`a` = `test`.`t2`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 left join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 5 NULL NULL
|
|
5 5 NULL NULL
|
|
3 5 NULL NULL
|
|
7 1 NULL NULL
|
|
5 1 NULL NULL
|
|
3 1 NULL NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t3` join `test`.`t4` left join (`test`.`t1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where `test`.`t4`.`a` = `test`.`t3`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 left join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t3` left join `test`.`t4` on(`test`.`t4`.`a` = `test`.`t3`.`a`) left join (`test`.`t1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 left join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
NULL NULL 2 NULL
|
|
NULL NULL 3 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t4`.`a`) left join (`test`.`t1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
NULL NULL NULL 4
|
|
NULL NULL NULL 9
|
|
NULL NULL NULL 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` join `test`.`t4` where `test`.`t4`.`a` = `test`.`t3`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 5 7 7
|
|
5 5 7 7
|
|
3 5 7 7
|
|
7 1 7 7
|
|
5 1 7 7
|
|
3 1 7 7
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 left join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` left join `test`.`t4` on(`test`.`t4`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 left join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 5 7 7
|
|
5 5 7 7
|
|
3 5 7 7
|
|
7 1 7 7
|
|
5 1 7 7
|
|
3 1 7 7
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 5 2 NULL
|
|
5 5 2 NULL
|
|
3 5 2 NULL
|
|
7 1 2 NULL
|
|
5 1 2 NULL
|
|
3 1 2 NULL
|
|
7 7 2 NULL
|
|
5 7 2 NULL
|
|
3 7 2 NULL
|
|
7 5 3 NULL
|
|
5 5 3 NULL
|
|
3 5 3 NULL
|
|
7 1 3 NULL
|
|
5 1 3 NULL
|
|
3 1 3 NULL
|
|
7 7 3 NULL
|
|
5 7 3 NULL
|
|
3 7 3 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 right join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join (`test`.`t1` join `test`.`t2` join `test`.`t3`) on(`test`.`t3`.`a` = `test`.`t4`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 right join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 5 7 7
|
|
5 5 7 7
|
|
3 5 7 7
|
|
7 1 7 7
|
|
5 1 7 7
|
|
3 1 7 7
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
NULL NULL NULL 4
|
|
NULL NULL NULL 9
|
|
NULL NULL NULL 5
|
|
explain extended select s1.b as s1_b, s2.b as s2_b, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join s2 join t3 join t4 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`s2`.`b` AS `s2_b`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`s1` join `test`.`s2` join `test`.`t3` join `test`.`t4` where `test`.`t4`.`a` = `test`.`t3`.`a`
|
|
select s1.b as s1_b, s2.b as s2_b, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join s2 join t3 join t4 using(a);
|
|
s1_b s2_b t3_a t4_a
|
|
7 5 7 7
|
|
5 5 7 7
|
|
3 5 7 7
|
|
7 1 7 7
|
|
5 1 7 7
|
|
3 1 7 7
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
explain extended select s1.b as s1_b, s2.b as s2_b, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join s2 join t3 left join t4 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`s2`.`b` AS `s2_b`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`s1` join `test`.`s2` join `test`.`t3` left join `test`.`t4` on(`test`.`t4`.`a` = `test`.`t3`.`a`) where 1
|
|
select s1.b as s1_b, s2.b as s2_b, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join s2 join t3 left join t4 using(a);
|
|
s1_b s2_b t3_a t4_a
|
|
7 5 7 7
|
|
5 5 7 7
|
|
3 5 7 7
|
|
7 1 7 7
|
|
5 1 7 7
|
|
3 1 7 7
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 5 2 NULL
|
|
5 5 2 NULL
|
|
3 5 2 NULL
|
|
7 1 2 NULL
|
|
5 1 2 NULL
|
|
3 1 2 NULL
|
|
7 7 2 NULL
|
|
5 7 2 NULL
|
|
3 7 2 NULL
|
|
7 5 3 NULL
|
|
5 5 3 NULL
|
|
3 5 3 NULL
|
|
7 1 3 NULL
|
|
5 1 3 NULL
|
|
3 1 3 NULL
|
|
7 7 3 NULL
|
|
5 7 3 NULL
|
|
3 7 3 NULL
|
|
explain extended select s1.b as s1_b, s2.b as s2_b, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join s2 join t3 right join t4 using(a);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE s2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`s2`.`b` AS `s2_b`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join (`test`.`s1` join `test`.`s2` join `test`.`t3`) on(`test`.`t3`.`a` = `test`.`t4`.`a`) where 1
|
|
select s1.b as s1_b, s2.b as s2_b, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join s2 join t3 right join t4 using(a);
|
|
s1_b s2_b t3_a t4_a
|
|
7 5 7 7
|
|
5 5 7 7
|
|
3 5 7 7
|
|
7 1 7 7
|
|
5 1 7 7
|
|
3 1 7 7
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
NULL NULL NULL 4
|
|
NULL NULL NULL 9
|
|
NULL NULL NULL 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 on t2.a=t3.a join t4;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` join `test`.`t4` where `test`.`t3`.`a` = `test`.`t2`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 join t3 on t2.a=t3.a join t4;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 4
|
|
5 7 7 4
|
|
3 7 7 4
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 7 7 9
|
|
5 7 7 9
|
|
3 7 7 9
|
|
7 7 7 5
|
|
5 7 7 5
|
|
3 7 7 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 left join t3 on t2.a=t3.a join t4;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t2`.`a`) join `test`.`t4` where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 left join t3 on t2.a=t3.a join t4;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 4
|
|
5 7 7 4
|
|
3 7 7 4
|
|
7 5 NULL 4
|
|
5 5 NULL 4
|
|
3 5 NULL 4
|
|
7 1 NULL 4
|
|
5 1 NULL 4
|
|
3 1 NULL 4
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 5 NULL 7
|
|
5 5 NULL 7
|
|
3 5 NULL 7
|
|
7 1 NULL 7
|
|
5 1 NULL 7
|
|
3 1 NULL 7
|
|
7 7 7 9
|
|
5 7 7 9
|
|
3 7 7 9
|
|
7 5 NULL 9
|
|
5 5 NULL 9
|
|
3 5 NULL 9
|
|
7 1 NULL 9
|
|
5 1 NULL 9
|
|
3 1 NULL 9
|
|
7 7 7 5
|
|
5 7 7 5
|
|
3 7 7 5
|
|
7 5 NULL 5
|
|
5 5 NULL 5
|
|
3 5 NULL 5
|
|
7 1 NULL 5
|
|
5 1 NULL 5
|
|
3 1 NULL 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 on t2.a=t3.a join t4;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t3` left join (`test`.`t1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) join `test`.`t4` where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 on t2.a=t3.a join t4;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 4
|
|
5 7 7 4
|
|
3 7 7 4
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 7 7 9
|
|
5 7 7 9
|
|
3 7 7 9
|
|
7 7 7 5
|
|
5 7 7 5
|
|
3 7 7 5
|
|
NULL NULL 2 4
|
|
NULL NULL 3 4
|
|
NULL NULL 2 7
|
|
NULL NULL 3 7
|
|
NULL NULL 2 9
|
|
NULL NULL 3 9
|
|
NULL NULL 2 5
|
|
NULL NULL 3 5
|
|
explain extended select s1.b as s1_b, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t2 join t3 using(a) join t4;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`s1` join `test`.`t2` join `test`.`t3` join `test`.`t4` where `test`.`t3`.`a` = `test`.`t2`.`a`
|
|
select s1.b as s1_b, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t2 join t3 using(a) join t4;
|
|
s1_b t2_a t3_a t4_a
|
|
7 7 7 4
|
|
5 7 7 4
|
|
3 7 7 4
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 7 7 9
|
|
5 7 7 9
|
|
3 7 7 9
|
|
7 7 7 5
|
|
5 7 7 5
|
|
3 7 7 5
|
|
explain extended select s1.b as s1_b, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t2 left join t3 using(a) join t4;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`s1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t2`.`a`) join `test`.`t4` where 1
|
|
select s1.b as s1_b, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t2 left join t3 using(a) join t4;
|
|
s1_b t2_a t3_a t4_a
|
|
7 7 7 4
|
|
5 7 7 4
|
|
3 7 7 4
|
|
7 5 NULL 4
|
|
5 5 NULL 4
|
|
3 5 NULL 4
|
|
7 1 NULL 4
|
|
5 1 NULL 4
|
|
3 1 NULL 4
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 5 NULL 7
|
|
5 5 NULL 7
|
|
3 5 NULL 7
|
|
7 1 NULL 7
|
|
5 1 NULL 7
|
|
3 1 NULL 7
|
|
7 7 7 9
|
|
5 7 7 9
|
|
3 7 7 9
|
|
7 5 NULL 9
|
|
5 5 NULL 9
|
|
3 5 NULL 9
|
|
7 1 NULL 9
|
|
5 1 NULL 9
|
|
3 1 NULL 9
|
|
7 7 7 5
|
|
5 7 7 5
|
|
3 7 7 5
|
|
7 5 NULL 5
|
|
5 5 NULL 5
|
|
3 5 NULL 5
|
|
7 1 NULL 5
|
|
5 1 NULL 5
|
|
3 1 NULL 5
|
|
explain extended select s1.b as s1_b, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t2 right join t3 using(a) join t4;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t3` left join (`test`.`s1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) join `test`.`t4` where 1
|
|
select s1.b as s1_b, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t2 right join t3 using(a) join t4;
|
|
s1_b t2_a t3_a t4_a
|
|
7 7 7 4
|
|
5 7 7 4
|
|
3 7 7 4
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 7 7 9
|
|
5 7 7 9
|
|
3 7 7 9
|
|
7 7 7 5
|
|
5 7 7 5
|
|
3 7 7 5
|
|
NULL NULL 2 4
|
|
NULL NULL 3 4
|
|
NULL NULL 2 7
|
|
NULL NULL 3 7
|
|
NULL NULL 2 9
|
|
NULL NULL 3 9
|
|
NULL NULL 2 5
|
|
NULL NULL 3 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 on t1.a=t2.a join t3 join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` join `test`.`t4` where `test`.`t4`.`a` = `test`.`t3`.`a` and `test`.`t2`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 on t1.a=t2.a join t3 join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
5 5 7 7
|
|
7 7 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 on t1.a=t2.a join t3 left join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` left join `test`.`t4` on(`test`.`t4`.`a` = `test`.`t3`.`a`) where `test`.`t2`.`a` = `test`.`t1`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 on t1.a=t2.a join t3 left join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
5 5 7 7
|
|
7 7 7 7
|
|
5 5 2 NULL
|
|
7 7 2 NULL
|
|
5 5 3 NULL
|
|
7 7 3 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 on t1.a=t2.a join t3 right join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join (`test`.`t1` join `test`.`t2` join `test`.`t3`) on(`test`.`t3`.`a` = `test`.`t4`.`a` and `test`.`t2`.`a` = `test`.`t1`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 on t1.a=t2.a join t3 right join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
5 5 7 7
|
|
7 7 7 7
|
|
NULL NULL NULL 4
|
|
NULL NULL NULL 9
|
|
NULL NULL NULL 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 left join t2 on t1.a=t2.a join t3 join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`t1`.`a`) join `test`.`t3` join `test`.`t4` where `test`.`t4`.`a` = `test`.`t3`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 left join t2 on t1.a=t2.a join t3 join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
5 5 7 7
|
|
7 7 7 7
|
|
3 NULL 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 left join t2 on t1.a=t2.a join t3 left join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`t1`.`a`) join `test`.`t3` left join `test`.`t4` on(`test`.`t4`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 left join t2 on t1.a=t2.a join t3 left join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
5 5 7 7
|
|
7 7 7 7
|
|
3 NULL 7 7
|
|
5 5 2 NULL
|
|
7 7 2 NULL
|
|
3 NULL 2 NULL
|
|
5 5 3 NULL
|
|
7 7 3 NULL
|
|
3 NULL 3 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 left join t2 on t1.a=t2.a join t3 right join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join (`test`.`t1` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`t1`.`a`) join `test`.`t3`) on(`test`.`t3`.`a` = `test`.`t4`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 left join t2 on t1.a=t2.a join t3 right join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
5 5 7 7
|
|
7 7 7 7
|
|
3 NULL 7 7
|
|
NULL NULL NULL 4
|
|
NULL NULL NULL 9
|
|
NULL NULL NULL 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 right join t2 on t1.a=t2.a join t3 join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t2` left join `test`.`t1` on(`test`.`t1`.`a` = `test`.`t2`.`a`) join `test`.`t3` join `test`.`t4` where `test`.`t4`.`a` = `test`.`t3`.`a`
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 right join t2 on t1.a=t2.a join t3 join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 5 7 7
|
|
NULL 1 7 7
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 right join t2 on t1.a=t2.a join t3 left join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t2` left join `test`.`t1` on(`test`.`t1`.`a` = `test`.`t2`.`a`) join `test`.`t3` left join `test`.`t4` on(`test`.`t4`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 right join t2 on t1.a=t2.a join t3 left join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 5 7 7
|
|
NULL 1 7 7
|
|
7 7 2 NULL
|
|
5 5 2 NULL
|
|
NULL 1 2 NULL
|
|
7 7 3 NULL
|
|
5 5 3 NULL
|
|
NULL 1 3 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 right join t2 on t1.a=t2.a join t3 right join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join (`test`.`t2` left join `test`.`t1` on(`test`.`t1`.`a` = `test`.`t2`.`a`) join `test`.`t3`) on(`test`.`t3`.`a` = `test`.`t4`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 right join t2 on t1.a=t2.a join t3 right join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 5 7 7
|
|
NULL 1 7 7
|
|
NULL NULL NULL 4
|
|
NULL NULL NULL 9
|
|
NULL NULL NULL 5
|
|
explain extended select s1.b as s1_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t1 left join t2 on s1.b=t2.a join t3 join t4 on t4.a=s1.b;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`s1` join `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`s1`.`b`) join `test`.`t3` join `test`.`t4` where `test`.`t4`.`a` = `test`.`s1`.`b`
|
|
select s1.b as s1_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t1 left join t2 on s1.b=t2.a join t3 join t4 on t4.a=s1.b;
|
|
s1_b t1_a t2_a t3_a t4_a
|
|
7 7 7 2 7
|
|
7 5 7 2 7
|
|
7 3 7 2 7
|
|
7 7 7 7 7
|
|
7 5 7 7 7
|
|
7 3 7 7 7
|
|
7 7 7 3 7
|
|
7 5 7 3 7
|
|
7 3 7 3 7
|
|
5 7 5 2 5
|
|
5 5 5 2 5
|
|
5 3 5 2 5
|
|
5 7 5 7 5
|
|
5 5 5 7 5
|
|
5 3 5 7 5
|
|
5 7 5 3 5
|
|
5 5 5 3 5
|
|
5 3 5 3 5
|
|
explain extended select s1.b as s1_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t1 left join t2 on s1.b=t2.a join t3 left join t4 on t4.a=s1.b;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`s1` join `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`s1`.`b`) join `test`.`t3` left join `test`.`t4` on(`test`.`t4`.`a` = `test`.`s1`.`b`) where 1
|
|
select s1.b as s1_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t1 left join t2 on s1.b=t2.a join t3 left join t4 on t4.a=s1.b;
|
|
s1_b t1_a t2_a t3_a t4_a
|
|
7 7 7 2 7
|
|
7 5 7 2 7
|
|
7 3 7 2 7
|
|
7 7 7 7 7
|
|
7 5 7 7 7
|
|
7 3 7 7 7
|
|
7 7 7 3 7
|
|
7 5 7 3 7
|
|
7 3 7 3 7
|
|
5 7 5 2 5
|
|
5 5 5 2 5
|
|
5 3 5 2 5
|
|
5 7 5 7 5
|
|
5 5 5 7 5
|
|
5 3 5 7 5
|
|
5 7 5 3 5
|
|
5 5 5 3 5
|
|
5 3 5 3 5
|
|
3 7 NULL 2 NULL
|
|
3 5 NULL 2 NULL
|
|
3 3 NULL 2 NULL
|
|
3 7 NULL 7 NULL
|
|
3 5 NULL 7 NULL
|
|
3 3 NULL 7 NULL
|
|
3 7 NULL 3 NULL
|
|
3 5 NULL 3 NULL
|
|
3 3 NULL 3 NULL
|
|
explain extended select s1.b as s1_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t1 left join t2 on s1.b=t2.a join t3 right join t4 on t4.a=s1.b;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join (`test`.`s1` join `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`t4`.`a`) join `test`.`t3`) on(`test`.`s1`.`b` = `test`.`t4`.`a`) where 1
|
|
select s1.b as s1_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from s1 join t1 left join t2 on s1.b=t2.a join t3 right join t4 on t4.a=s1.b;
|
|
s1_b t1_a t2_a t3_a t4_a
|
|
5 7 5 2 5
|
|
5 5 5 2 5
|
|
5 3 5 2 5
|
|
7 7 7 2 7
|
|
7 5 7 2 7
|
|
7 3 7 2 7
|
|
5 7 5 7 5
|
|
5 5 5 7 5
|
|
5 3 5 7 5
|
|
7 7 7 7 7
|
|
7 5 7 7 7
|
|
7 3 7 7 7
|
|
5 7 5 3 5
|
|
5 5 5 3 5
|
|
5 3 5 3 5
|
|
7 7 7 3 7
|
|
7 5 7 3 7
|
|
7 3 7 3 7
|
|
NULL NULL NULL NULL 4
|
|
NULL NULL NULL NULL 9
|
|
explain extended select s1.b as s1_b, s2.b as s2_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from s1 join s2 on s1.b=s2.b join t1 right join t2 on t1.a=t2.a join t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE s2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`s2`.`b` AS `s2_b`,`test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t2` left join (`test`.`s1` join `test`.`s2` join `test`.`t1`) on(`test`.`t1`.`a` = `test`.`t2`.`a` and `test`.`s2`.`b` = `test`.`s1`.`b`) join `test`.`t3` where 1
|
|
select s1.b as s1_b, s2.b as s2_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from s1 join s2 on s1.b=s2.b join t1 right join t2 on t1.a=t2.a join t3;
|
|
s1_b s2_b t1_a t2_a t3_a
|
|
5 5 7 7 2
|
|
7 7 7 7 2
|
|
5 5 5 5 2
|
|
7 7 5 5 2
|
|
5 5 7 7 7
|
|
7 7 7 7 7
|
|
5 5 5 5 7
|
|
7 7 5 5 7
|
|
5 5 7 7 3
|
|
7 7 7 7 3
|
|
5 5 5 5 3
|
|
7 7 5 5 3
|
|
NULL NULL NULL 1 2
|
|
NULL NULL NULL 1 7
|
|
NULL NULL NULL 1 3
|
|
explain extended select s1.b as s1_b, s2.b as s2_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from s1 left join s2 on s1.b=s2.b join t1 right join t2 on t1.a=t2.a join t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE s2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`s2`.`b` AS `s2_b`,`test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t2` left join (`test`.`s1` left join `test`.`s2` on(`test`.`s2`.`b` = `test`.`s1`.`b`) join `test`.`t1`) on(`test`.`t1`.`a` = `test`.`t2`.`a`) join `test`.`t3` where 1
|
|
select s1.b as s1_b, s2.b as s2_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from s1 left join s2 on s1.b=s2.b join t1 right join t2 on t1.a=t2.a join t3;
|
|
s1_b s2_b t1_a t2_a t3_a
|
|
5 5 7 7 2
|
|
7 7 7 7 2
|
|
3 NULL 7 7 2
|
|
5 5 5 5 2
|
|
7 7 5 5 2
|
|
3 NULL 5 5 2
|
|
5 5 7 7 7
|
|
7 7 7 7 7
|
|
3 NULL 7 7 7
|
|
5 5 5 5 7
|
|
7 7 5 5 7
|
|
3 NULL 5 5 7
|
|
5 5 7 7 3
|
|
7 7 7 7 3
|
|
3 NULL 7 7 3
|
|
5 5 5 5 3
|
|
7 7 5 5 3
|
|
3 NULL 5 5 3
|
|
NULL NULL NULL 1 2
|
|
NULL NULL NULL 1 7
|
|
NULL NULL NULL 1 3
|
|
explain extended select s1.b as s1_b, s2.b as s2_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from s1 right join s2 on s1.b=s2.b join t1 right join t2 on t1.a=t2.a join t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE s2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE s1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`s1`.`b` AS `s1_b`,`test`.`s2`.`b` AS `s2_b`,`test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a` from `test`.`t2` left join (`test`.`s2` left join `test`.`s1` on(`test`.`s1`.`b` = `test`.`s2`.`b`) join `test`.`t1`) on(`test`.`t1`.`a` = `test`.`t2`.`a`) join `test`.`t3` where 1
|
|
select s1.b as s1_b, s2.b as s2_b, t1.a as t1_a, t2.a as t2_a, t3.a as t3_a
|
|
from s1 right join s2 on s1.b=s2.b join t1 right join t2 on t1.a=t2.a join t3;
|
|
s1_b s2_b t1_a t2_a t3_a
|
|
7 7 7 7 2
|
|
5 5 7 7 2
|
|
NULL 1 7 7 2
|
|
7 7 5 5 2
|
|
5 5 5 5 2
|
|
NULL 1 5 5 2
|
|
7 7 7 7 7
|
|
5 5 7 7 7
|
|
NULL 1 7 7 7
|
|
7 7 5 5 7
|
|
5 5 5 5 7
|
|
NULL 1 5 5 7
|
|
7 7 7 7 3
|
|
5 5 7 7 3
|
|
NULL 1 7 7 3
|
|
7 7 5 5 3
|
|
5 5 5 5 3
|
|
NULL 1 5 5 3
|
|
NULL NULL NULL 1 2
|
|
NULL NULL NULL 1 7
|
|
NULL NULL NULL 1 3
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t4`.`a`) left join (`test`.`t1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1 join t2 right join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
NULL NULL NULL 4
|
|
NULL NULL NULL 9
|
|
NULL NULL NULL 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from (t1 join t2) right join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t4`.`a`) left join (`test`.`t1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from (t1 join t2) right join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
NULL NULL NULL 4
|
|
NULL NULL NULL 9
|
|
NULL NULL NULL 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from (t1, t2) right join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t4` left join `test`.`t3` on(`test`.`t3`.`a` = `test`.`t4`.`a`) left join (`test`.`t1` join `test`.`t2`) on(`test`.`t2`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from (t1, t2) right join t3 right join t4 on t3.a=t4.a on t2.a=t3.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
NULL NULL NULL 4
|
|
NULL NULL NULL 9
|
|
NULL NULL NULL 5
|
|
drop table t1,t2,t3,t4,s1,s2;
|
|
#
|
|
# MDEV-20265: Mix of comma joins with JOIN expressions
|
|
# (correction of the fix for MDEV-19421)
|
|
# MDEV-20330: duplicate
|
|
#
|
|
create table t1 (a int);
|
|
insert into t1 values (7), (5), (3);
|
|
create table t2 (a int);
|
|
insert into t2 values (5), (1), (7);
|
|
create table t3 (a int);
|
|
insert into t3 values (2), (7), (3);
|
|
create table t4 (a int);
|
|
insert into t4 values (4), (7), (9), (5);
|
|
create table t5 (a int);
|
|
insert into t5 values (3), (7), (9), (2);
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1, t2 join t3 left join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` left join `test`.`t4` on(`test`.`t4`.`a` = `test`.`t3`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1, t2 join t3 left join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 5 7 7
|
|
5 5 7 7
|
|
3 5 7 7
|
|
7 1 7 7
|
|
5 1 7 7
|
|
3 1 7 7
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 5 2 NULL
|
|
5 5 2 NULL
|
|
3 5 2 NULL
|
|
7 1 2 NULL
|
|
5 1 2 NULL
|
|
3 1 2 NULL
|
|
7 7 2 NULL
|
|
5 7 2 NULL
|
|
3 7 2 NULL
|
|
7 5 3 NULL
|
|
5 5 3 NULL
|
|
3 5 3 NULL
|
|
7 1 3 NULL
|
|
5 1 3 NULL
|
|
3 1 3 NULL
|
|
7 7 3 NULL
|
|
5 7 3 NULL
|
|
3 7 3 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1, t2 join t3 right join t4 on t3.a=t4.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a` from `test`.`t1` join `test`.`t4` left join (`test`.`t2` join `test`.`t3`) on(`test`.`t3`.`a` = `test`.`t4`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a
|
|
from t1, t2 join t3 right join t4 on t3.a=t4.a;
|
|
t1_a t2_a t3_a t4_a
|
|
7 5 7 7
|
|
5 5 7 7
|
|
3 5 7 7
|
|
7 1 7 7
|
|
5 1 7 7
|
|
3 1 7 7
|
|
7 7 7 7
|
|
5 7 7 7
|
|
3 7 7 7
|
|
7 NULL NULL 4
|
|
5 NULL NULL 4
|
|
3 NULL NULL 4
|
|
7 NULL NULL 9
|
|
5 NULL NULL 9
|
|
3 NULL NULL 9
|
|
7 NULL NULL 5
|
|
5 NULL NULL 5
|
|
3 NULL NULL 5
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a, t5.a as t5_a
|
|
from t1, t2 join t3 join t4 left join t5 on t4.a=t5.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t5 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a`,`test`.`t5`.`a` AS `t5_a` from `test`.`t1` join `test`.`t2` join `test`.`t3` join `test`.`t4` left join `test`.`t5` on(`test`.`t5`.`a` = `test`.`t4`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a, t5.a as t5_a
|
|
from t1, t2 join t3 join t4 left join t5 on t4.a=t5.a;
|
|
t1_a t2_a t3_a t4_a t5_a
|
|
7 5 2 7 7
|
|
5 5 2 7 7
|
|
3 5 2 7 7
|
|
7 1 2 7 7
|
|
5 1 2 7 7
|
|
3 1 2 7 7
|
|
7 7 2 7 7
|
|
5 7 2 7 7
|
|
3 7 2 7 7
|
|
7 5 7 7 7
|
|
5 5 7 7 7
|
|
3 5 7 7 7
|
|
7 1 7 7 7
|
|
5 1 7 7 7
|
|
3 1 7 7 7
|
|
7 7 7 7 7
|
|
5 7 7 7 7
|
|
3 7 7 7 7
|
|
7 5 3 7 7
|
|
5 5 3 7 7
|
|
3 5 3 7 7
|
|
7 1 3 7 7
|
|
5 1 3 7 7
|
|
3 1 3 7 7
|
|
7 7 3 7 7
|
|
5 7 3 7 7
|
|
3 7 3 7 7
|
|
7 5 2 9 9
|
|
5 5 2 9 9
|
|
3 5 2 9 9
|
|
7 1 2 9 9
|
|
5 1 2 9 9
|
|
3 1 2 9 9
|
|
7 7 2 9 9
|
|
5 7 2 9 9
|
|
3 7 2 9 9
|
|
7 5 7 9 9
|
|
5 5 7 9 9
|
|
3 5 7 9 9
|
|
7 1 7 9 9
|
|
5 1 7 9 9
|
|
3 1 7 9 9
|
|
7 7 7 9 9
|
|
5 7 7 9 9
|
|
3 7 7 9 9
|
|
7 5 3 9 9
|
|
5 5 3 9 9
|
|
3 5 3 9 9
|
|
7 1 3 9 9
|
|
5 1 3 9 9
|
|
3 1 3 9 9
|
|
7 7 3 9 9
|
|
5 7 3 9 9
|
|
3 7 3 9 9
|
|
7 5 2 4 NULL
|
|
5 5 2 4 NULL
|
|
3 5 2 4 NULL
|
|
7 1 2 4 NULL
|
|
5 1 2 4 NULL
|
|
3 1 2 4 NULL
|
|
7 7 2 4 NULL
|
|
5 7 2 4 NULL
|
|
3 7 2 4 NULL
|
|
7 5 7 4 NULL
|
|
5 5 7 4 NULL
|
|
3 5 7 4 NULL
|
|
7 1 7 4 NULL
|
|
5 1 7 4 NULL
|
|
3 1 7 4 NULL
|
|
7 7 7 4 NULL
|
|
5 7 7 4 NULL
|
|
3 7 7 4 NULL
|
|
7 5 3 4 NULL
|
|
5 5 3 4 NULL
|
|
3 5 3 4 NULL
|
|
7 1 3 4 NULL
|
|
5 1 3 4 NULL
|
|
3 1 3 4 NULL
|
|
7 7 3 4 NULL
|
|
5 7 3 4 NULL
|
|
3 7 3 4 NULL
|
|
7 5 2 5 NULL
|
|
5 5 2 5 NULL
|
|
3 5 2 5 NULL
|
|
7 1 2 5 NULL
|
|
5 1 2 5 NULL
|
|
3 1 2 5 NULL
|
|
7 7 2 5 NULL
|
|
5 7 2 5 NULL
|
|
3 7 2 5 NULL
|
|
7 5 7 5 NULL
|
|
5 5 7 5 NULL
|
|
3 5 7 5 NULL
|
|
7 1 7 5 NULL
|
|
5 1 7 5 NULL
|
|
3 1 7 5 NULL
|
|
7 7 7 5 NULL
|
|
5 7 7 5 NULL
|
|
3 7 7 5 NULL
|
|
7 5 3 5 NULL
|
|
5 5 3 5 NULL
|
|
3 5 3 5 NULL
|
|
7 1 3 5 NULL
|
|
5 1 3 5 NULL
|
|
3 1 3 5 NULL
|
|
7 7 3 5 NULL
|
|
5 7 3 5 NULL
|
|
3 7 3 5 NULL
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a, t5.a as t5_a
|
|
from t1, t2 join t3 join t4 right join t5 on t4.a=t5.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t5 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a`,`test`.`t5`.`a` AS `t5_a` from `test`.`t1` join `test`.`t5` left join (`test`.`t2` join `test`.`t3` join `test`.`t4`) on(`test`.`t4`.`a` = `test`.`t5`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a, t5.a as t5_a
|
|
from t1, t2 join t3 join t4 right join t5 on t4.a=t5.a;
|
|
t1_a t2_a t3_a t4_a t5_a
|
|
7 5 2 7 7
|
|
5 5 2 7 7
|
|
3 5 2 7 7
|
|
7 1 2 7 7
|
|
5 1 2 7 7
|
|
3 1 2 7 7
|
|
7 7 2 7 7
|
|
5 7 2 7 7
|
|
3 7 2 7 7
|
|
7 5 7 7 7
|
|
5 5 7 7 7
|
|
3 5 7 7 7
|
|
7 1 7 7 7
|
|
5 1 7 7 7
|
|
3 1 7 7 7
|
|
7 7 7 7 7
|
|
5 7 7 7 7
|
|
3 7 7 7 7
|
|
7 5 3 7 7
|
|
5 5 3 7 7
|
|
3 5 3 7 7
|
|
7 1 3 7 7
|
|
5 1 3 7 7
|
|
3 1 3 7 7
|
|
7 7 3 7 7
|
|
5 7 3 7 7
|
|
3 7 3 7 7
|
|
7 5 2 9 9
|
|
5 5 2 9 9
|
|
3 5 2 9 9
|
|
7 1 2 9 9
|
|
5 1 2 9 9
|
|
3 1 2 9 9
|
|
7 7 2 9 9
|
|
5 7 2 9 9
|
|
3 7 2 9 9
|
|
7 5 7 9 9
|
|
5 5 7 9 9
|
|
3 5 7 9 9
|
|
7 1 7 9 9
|
|
5 1 7 9 9
|
|
3 1 7 9 9
|
|
7 7 7 9 9
|
|
5 7 7 9 9
|
|
3 7 7 9 9
|
|
7 5 3 9 9
|
|
5 5 3 9 9
|
|
3 5 3 9 9
|
|
7 1 3 9 9
|
|
5 1 3 9 9
|
|
3 1 3 9 9
|
|
7 7 3 9 9
|
|
5 7 3 9 9
|
|
3 7 3 9 9
|
|
7 NULL NULL NULL 3
|
|
5 NULL NULL NULL 3
|
|
3 NULL NULL NULL 3
|
|
7 NULL NULL NULL 2
|
|
5 NULL NULL NULL 2
|
|
3 NULL NULL NULL 2
|
|
explain extended select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a, t5.a as t5_a
|
|
from t1 left join t2 on t1.a=t2.a, t3 join t4 right join t5 on t4.a=t5.a;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t5 ALL NULL NULL NULL NULL 4 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (incremental, BNL join)
|
|
1 SIMPLE t4 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (incremental, BNL join)
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `t1_a`,`test`.`t2`.`a` AS `t2_a`,`test`.`t3`.`a` AS `t3_a`,`test`.`t4`.`a` AS `t4_a`,`test`.`t5`.`a` AS `t5_a` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`a` = `test`.`t1`.`a`) join `test`.`t5` left join (`test`.`t3` join `test`.`t4`) on(`test`.`t4`.`a` = `test`.`t5`.`a`) where 1
|
|
select t1.a as t1_a, t2.a as t2_a, t3.a as t3_a, t4.a as t4_a, t5.a as t5_a
|
|
from t1 left join t2 on t1.a=t2.a, t3 join t4 right join t5 on t4.a=t5.a;
|
|
t1_a t2_a t3_a t4_a t5_a
|
|
5 5 2 7 7
|
|
7 7 2 7 7
|
|
3 NULL 2 7 7
|
|
5 5 7 7 7
|
|
7 7 7 7 7
|
|
3 NULL 7 7 7
|
|
5 5 3 7 7
|
|
7 7 3 7 7
|
|
3 NULL 3 7 7
|
|
5 5 2 9 9
|
|
7 7 2 9 9
|
|
3 NULL 2 9 9
|
|
5 5 7 9 9
|
|
7 7 7 9 9
|
|
3 NULL 7 9 9
|
|
5 5 3 9 9
|
|
7 7 3 9 9
|
|
3 NULL 3 9 9
|
|
5 5 NULL NULL 3
|
|
7 7 NULL NULL 3
|
|
3 NULL NULL NULL 3
|
|
5 5 NULL NULL 2
|
|
7 7 NULL NULL 2
|
|
3 NULL NULL NULL 2
|
|
drop table t1,t2,t3,t4,t5;
|
|
select a.a
|
|
from (select 1 as a) a,
|
|
(select 2 as b) b
|
|
cross join
|
|
(select 3 as c) c
|
|
left join
|
|
(select 4 as d) d
|
|
on 1;
|
|
a
|
|
1
|
|
#
|
|
# End of MariaDB 5.5 tests
|
|
#
|
|
#
|
|
# Bug #35268: Parser can't handle STRAIGHT_JOIN with USING
|
|
#
|
|
CREATE TABLE t1 (a int);
|
|
INSERT INTO t1 (a) VALUES (1),(2),(3),(4),(5),(6),(7),(8);
|
|
CREATE TABLE t2 (a int);
|
|
INSERT INTO t2 (a) VALUES (1),(2),(3),(4);
|
|
EXPLAIN
|
|
SELECT t1.a FROM t1 NATURAL INNER JOIN t2 ORDER BY t1.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
SELECT t1.a FROM t1 NATURAL INNER JOIN t2 ORDER BY t1.a;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
4
|
|
EXPLAIN
|
|
SELECT t1.a FROM t1 STRAIGHT_JOIN t2 USING(a) ORDER BY t1.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using temporary; Using filesort
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join)
|
|
SELECT t1.a FROM t1 STRAIGHT_JOIN t2 USING(a) ORDER BY t1.a;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
4
|
|
EXPLAIN
|
|
SELECT t1.a FROM t1 NATURAL STRAIGHT_JOIN t2 ORDER BY t1.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using temporary; Using filesort
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join)
|
|
SELECT t1.a FROM t1 NATURAL STRAIGHT_JOIN t2 ORDER BY t1.a;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
4
|
|
DROP TABLE t1,t2;
|
|
#
|
|
# MDEV-5635: join of a const table with non-const tables
|
|
#
|
|
CREATE TABLE t1 (a varchar(3) NOT NULL) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES ('foo');
|
|
CREATE TABLE t2 (b varchar(3), c varchar(3), INDEX(b)) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES ('bar', 'bar'),( 'qux', 'qux');
|
|
SELECT STRAIGHT_JOIN * FROM t1, t2 AS t2_1, t2 AS t2_2
|
|
WHERE t2_2.c = t2_1.c AND t2_2.b = t2_1.b AND ( a IS NULL OR t2_1.c = a );
|
|
a b c b c
|
|
DROP TABLE t1,t2;
|
|
select a.a from (select 1 as a) a, (select 2 as b) b cross join (select 3 as c) c left join (select 4 as d) d on 1;
|
|
a
|
|
1
|
|
#
|
|
# MDEV-19600: The optimizer should be able to produce rows=1 estimate for unique index with NULLable columns
|
|
#
|
|
create table t0(a int);
|
|
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t1 (
|
|
pk int not null primary key auto_increment,
|
|
a int,
|
|
b int,
|
|
unique key(a)
|
|
);
|
|
insert into t1 (a,b) select null, 12345 from t0 A, t0 B, t0 C;
|
|
insert into t1 (a,b) select a,a from t0;
|
|
# Simulate InnoDB's persistent statistics (It always uses nulls_equal)
|
|
set @tmp1= @@myisam_stats_method;
|
|
set myisam_stats_method=nulls_equal;
|
|
analyze table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status Engine-independent statistics collected
|
|
test.t1 analyze status OK
|
|
set myisam_stats_method=@tmp1;
|
|
show keys from t1;
|
|
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Ignored
|
|
t1 0 PRIMARY 1 pk A 1010 NULL NULL BTREE NO
|
|
t1 0 a 1 a A 1010 NULL NULL YES BTREE NO
|
|
# t1 must use eq_ref(t1.a=t0.a) and rows must be 1 (and not 45):
|
|
explain select * from t0,t1 where t0.a=t1.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t0 ALL NULL NULL NULL NULL 10 Using where
|
|
1 SIMPLE t1 eq_ref a a 5 test.t0.a 1
|
|
drop table t0,t1;
|
|
#
|
|
# MDEV-21383: Possible range plan is not used under certain conditions
|
|
#
|
|
drop table if exists t10, t1000, t03;
|
|
create table t10(a int);
|
|
insert into t10 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t1000(a int);
|
|
insert into t1000 select A.a + B.a* 10 + C.a * 100 from t10 A, t10 B, t10 C;
|
|
create table t03(a int);
|
|
insert into t03 values (0),(1),(2);
|
|
create table t1 (
|
|
stationid int
|
|
);
|
|
insert into t1 select a from t10;
|
|
CREATE TABLE t2 (
|
|
stationId int,
|
|
startTime int,
|
|
filler char(100),
|
|
key1 int,
|
|
key2 int,
|
|
key(key1),
|
|
key(key2),
|
|
PRIMARY KEY (`stationId`,`startTime`)
|
|
);
|
|
insert into t2 select
|
|
A.a,
|
|
B.a,
|
|
repeat('filler=data-', 4),
|
|
B.a,
|
|
1
|
|
from
|
|
t03 A,
|
|
t1000 B;
|
|
analyze table t2;
|
|
Table Op Msg_type Msg_text
|
|
test.t2 analyze status Engine-independent statistics collected
|
|
test.t2 analyze status OK
|
|
create table t3(a int, filler char(100), key(a));
|
|
insert into t3 select A.a+1000*B.a, 'filler-data' from t1000 A, t10 B;
|
|
# This should produce a join order of t1,t2,t3
|
|
# t2 should have type=range, key=PRIMARY key_len=8 (not type=ALL or key_len<8)
|
|
explain
|
|
SELECT *
|
|
FROM
|
|
t1,t2,t3
|
|
WHERE
|
|
t2.startTime <= 100 and
|
|
t2.stationId = t1.stationId and
|
|
(t1.stationid = 1 or t1.stationid = 2 or t1.stationid = 3) and
|
|
key1 >0 and
|
|
t2.key2=t3.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 10 Using where
|
|
1 SIMPLE t2 range PRIMARY,key1,key2 PRIMARY 8 NULL 219 Using index condition; Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t3 ref a a 5 test.t2.key2 1
|
|
drop table t1,t2,t3;
|
|
drop table t1000,t10,t03;
|
|
# End of 10.3 tests
|
|
#
|
|
# MDEV-30080 Wrong result with LEFT JOINs involving constant tables
|
|
#
|
|
CREATE TABLE t1 (a INT) ENGINE=MyISAM;
|
|
INSERT INTO t1 VALUES (1);
|
|
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
|
|
INSERT INTO t2 VALUES (1),(1);
|
|
CREATE TABLE t3 (c INT PRIMARY KEY) ENGINE=MyISAM;
|
|
SELECT * FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t2.b = t3.c) ON t1.a = t2.b;
|
|
a b c
|
|
1 1 NULL
|
|
1 1 NULL
|
|
SELECT COUNT(*) FROM t1 LEFT JOIN (t2 LEFT JOIN t3 ON t2.b = t3.c) ON t1.a = t2.b;
|
|
COUNT(*)
|
|
2
|
|
DROP TABLE t1, t2, t3;
|
|
#
|
|
# MDEV-30975: Wrong result with cross Join given join order
|
|
#
|
|
CREATE TABLE `t1` (
|
|
`t1_seq` INT NOT NULL,
|
|
`c1` VARCHAR(10) NOT NULL ,
|
|
PRIMARY KEY (`t1_seq`) USING BTREE
|
|
);
|
|
CREATE TABLE `t2` (
|
|
`t2_seq` INT NOT NULL,
|
|
`t1_seq` INT NOT NULL,
|
|
`c2` VARCHAR(10) NOT NULL ,
|
|
PRIMARY KEY (`t2_seq`, `t1_seq`) USING BTREE
|
|
);
|
|
INSERT INTO t1 VALUES(1, 'A');
|
|
INSERT INTO t2 VALUES(1, 1, 'T2-1-1');
|
|
INSERT INTO t2 VALUES(2, 1, 'T2-1-2');
|
|
INSERT INTO t2 VALUES(3, 1, 'T2-1-3');
|
|
SELECT LPAD(@rownum := @rownum + 1, 8, 0) AS str_num
|
|
, t1.t1_seq
|
|
, t2.t2_seq
|
|
, t1.c1
|
|
, t2.c2
|
|
FROM t1
|
|
INNER JOIN t2 ON (t1.t1_seq = t2.t1_seq)
|
|
CROSS JOIN ( SELECT @rownum := 0 ) X;
|
|
str_num t1_seq t2_seq c1 c2
|
|
00000001 1 1 A T2-1-1
|
|
00000002 1 2 A T2-1-2
|
|
00000003 1 3 A T2-1-3
|
|
SELECT STRAIGHT_JOIN LPAD(@rownum := @rownum + 1, 8, 0) AS str_num
|
|
, t1.t1_seq
|
|
, t2.t2_seq
|
|
, t1.c1
|
|
, t2.c2
|
|
FROM t1
|
|
INNER JOIN t2 ON (t1.t1_seq = t2.t1_seq)
|
|
CROSS JOIN ( SELECT @rownum := 0 ) X;
|
|
str_num t1_seq t2_seq c1 c2
|
|
00000001 1 1 A T2-1-1
|
|
00000002 1 2 A T2-1-2
|
|
00000003 1 3 A T2-1-3
|
|
SELECT STRAIGHT_JOIN * FROM t1 JOIN t2 ON (t1.t1_seq = t2.t1_seq) JOIN (SELECT @a := 0) x;
|
|
t1_seq c1 t2_seq t1_seq c2 @a := 0
|
|
1 A 1 1 T2-1-1 0
|
|
1 A 2 1 T2-1-2 0
|
|
1 A 3 1 T2-1-3 0
|
|
SELECT * FROM t1 JOIN t2 ON (t1.t1_seq = t2.t1_seq) JOIN (SELECT @a := 0) x;
|
|
t1_seq c1 t2_seq t1_seq c2 @a := 0
|
|
1 A 1 1 T2-1-1 0
|
|
1 A 2 1 T2-1-2 0
|
|
1 A 3 1 T2-1-3 0
|
|
SELECT STRAIGHT_JOIN c1 FROM t1 JOIN (SELECT @a := 0) x;
|
|
c1
|
|
A
|
|
DROP TABLE t1, t2;
|
|
# End of 10.5 tests
|
|
#
|
|
# MDEV-31449: Assertion s->table->opt_range_condition_rows <= s->found_records
|
|
#
|
|
CREATE TABLE t1 (a INT, b INT);
|
|
INSERT INTO t1 VALUES (1,2),(3,4);
|
|
CREATE TABLE t2 (c INT);
|
|
INSERT INTO t2 VALUES (5),(6);
|
|
SET @tmp=@@OPTIMIZER_USE_CONDITION_SELECTIVITY, OPTIMIZER_USE_CONDITION_SELECTIVITY = 1;
|
|
SELECT * FROM
|
|
(SELECT t1.* FROM t1 WHERE t1.a IN (SELECT MAX(t2.c) FROM t2 JOIN t1)) AS sq1,
|
|
(SELECT t2.* FROM t2 JOIN t1 ON (t1.b IN (SELECT t1.b FROM t2 STRAIGHT_JOIN t1))) AS sq2;
|
|
a b c
|
|
SET OPTIMIZER_USE_CONDITION_SELECTIVITY=@tmp;
|
|
DROP TABLE t1,t2;
|
|
# End of 10.6 tests
|
|
#
|
|
# MDEV-34894: Poor query plan, because range estimates are not reused for ref(const)
|
|
#
|
|
create table t0 (
|
|
a int,
|
|
b int,
|
|
dummy int
|
|
);
|
|
insert into t0 select seq,seq,seq from seq_1_to_10;
|
|
create table t1 (
|
|
pk1 int,
|
|
pk2 int,
|
|
pk3 int,
|
|
key1 int,
|
|
key(key1),
|
|
filler char(100),
|
|
primary key(pk1,pk2,pk3)
|
|
);
|
|
insert into t1
|
|
select
|
|
seq, seq, seq,
|
|
FLOOR(seq/2),
|
|
'filler-data'
|
|
from seq_1_to_10000;
|
|
analyze table t1;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status Engine-independent statistics collected
|
|
test.t1 analyze status OK
|
|
update t1 set pk1=1 where pk1 between 1 and 200;
|
|
explain select * from t1 where pk1=1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref PRIMARY PRIMARY 4 const 231
|
|
explain select * from t0,t1 where t1.pk1=t0.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t0 ALL NULL NULL NULL NULL 10 Using where
|
|
1 SIMPLE t1 ref PRIMARY PRIMARY 4 test.t0.a 1
|
|
create table t2 (
|
|
col int
|
|
);
|
|
insert into t2 select seq from seq_1_to_10000;
|
|
# This must use this good query plan:
|
|
# t0 - ALL
|
|
# t1 - ref, key=key1, not PRIMARY as pk1=1 is true for 20% of all rows
|
|
# t2 - ALL
|
|
explain select * from t0, t1, t2
|
|
where
|
|
t1.pk1=1 and t1.pk2=t2.col and t1.pk3=t0.dummy and
|
|
t1.key1=t0.b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t0 ALL NULL NULL NULL NULL 10 Using where
|
|
1 SIMPLE t1 ref PRIMARY,key1 key1 5 test.t0.b 1 Using where
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 10000 Using where; Using join buffer (flat, BNL join)
|
|
drop table t0,t1,t2;
|
|
CREATE OR REPLACE TABLE t1 (a INT NOT NULL, b INT NOT NULL, c INT, key(a,b,c)) ENGINE=Aria;
|
|
INSERT INTO t1 select seq/10,mod(seq,2),seq from seq_1_to_1000;
|
|
update t1 set a=10 WHERE c < 100;
|
|
update t1 set a=12 WHERE a=11;
|
|
insert into t1 values (11,1,11), (11,2,11);
|
|
create or replace table t2 select seq from seq_1_to_10;
|
|
explain select count(*) from t1, t2 as seq where a=10 and b=seq.seq;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE seq ALL NULL NULL NULL NULL 10
|
|
1 SIMPLE t1 ref a a 8 const,test.seq.seq 5 Using where; Using index
|
|
explain select count(*) from t1, t2 as seq where a=11 and b=seq.seq;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref a a 4 const 2 Using index
|
|
1 SIMPLE seq ALL NULL NULL NULL NULL 10 Using where; Using join buffer (flat, BNL join)
|
|
drop table t1,t2;
|
|
#
|
|
# MDEV-35180: ref_to_range rewrite causes poor query plan
|
|
#
|
|
create table t1 (a int);
|
|
insert into t1 select seq from seq_1_to_100;
|
|
create table t2 (
|
|
kp1 int,
|
|
kp2 int,
|
|
filler char(100),
|
|
key(kp1, kp2)
|
|
);
|
|
insert into t2
|
|
select
|
|
seq, seq,
|
|
'filler-data'
|
|
from seq_1_to_10000;
|
|
analyze table t1,t2;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status Engine-independent statistics collected
|
|
test.t1 analyze status OK
|
|
test.t2 analyze status Engine-independent statistics collected
|
|
test.t2 analyze status Table is already up to date
|
|
# For t2, this must use type=ref, key_len=5 (not type=range, key_len=10)
|
|
explain
|
|
select *
|
|
from t1, t2
|
|
where
|
|
t2.kp1=t1.a and t2.kp1<=100 and t2.kp2<=20;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 100 Using where
|
|
1 SIMPLE t2 ref kp1 kp1 5 test.t1.a 1 Using index condition
|
|
drop table t1,t2;
|
|
#
|
|
# MDEV-30256 Wrong result (missing rows) upon join with empty table
|
|
#
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
CREATE TABLE t2 (b INT);
|
|
INSERT INTO t2 VALUES (3),(4);
|
|
CREATE TABLE t3 (c INT PRIMARY KEY);
|
|
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 JOIN t3 ON (t2.b >= t3.c) ON (t1.a < t2.b);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
|
|
1 SIMPLE t3 index PRIMARY PRIMARY 4 NULL 0 Using index; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (incremental, BNL join)
|
|
SELECT * FROM t1 LEFT JOIN t2 JOIN t3 ON (t2.b >= t3.c) ON (t1.a < t2.b);
|
|
a b c
|
|
1 NULL NULL
|
|
2 NULL NULL
|
|
DROP TABLE t1,t2,t3;
|
|
#
|
|
# End of 11.0 tests
|
|
#
|