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mariadb/mysql-test/main/group_by.result
Oleg Smirnov fd87e01f38 MDEV-27277 Add a warning when max_sort_length is reached 
During a query execution some sorting and grouping operations
on strings may be involved. System variable max_sort_length defines
the maximum number of bytes to use when comparing strings during
sorting/grouping. Thus, the comparable parts of strings may be less
than their actual size, so the results of the query may be not
sorted/grouped properly.
To indicate that some comparisons were done on a truncated lengths,
a new warning has been introduced with this commit.
2024-10-22 22:39:36 +07:00

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drop table if exists t1,t2,t3;
SELECT 1 FROM (SELECT 1) as a GROUP BY SUM(1);
ERROR HY000: Invalid use of group function
CREATE TABLE t1 (
spID int(10) unsigned,
userID int(10) unsigned,
score smallint(5) unsigned,
lsg char(40),
date date
);
INSERT INTO t1 VALUES (1,1,1,'','0000-00-00');
INSERT INTO t1 VALUES (2,2,2,'','0000-00-00');
INSERT INTO t1 VALUES (2,1,1,'','0000-00-00');
INSERT INTO t1 VALUES (3,3,3,'','0000-00-00');
CREATE TABLE t2 (
userID int(10) unsigned NOT NULL auto_increment,
niName char(15),
passwd char(8),
mail char(50),
isAukt enum('N','Y') DEFAULT 'N',
vName char(30),
nName char(40),
adr char(60),
plz char(5),
ort char(35),
land char(20),
PRIMARY KEY (userID)
);
INSERT INTO t2 VALUES (1,'name','pass','mail','Y','v','n','adr','1','1','1');
INSERT INTO t2 VALUES (2,'name','pass','mail','Y','v','n','adr','1','1','1');
INSERT INTO t2 VALUES (3,'name','pass','mail','Y','v','n','adr','1','1','1');
INSERT INTO t2 VALUES (4,'name','pass','mail','Y','v','n','adr','1','1','1');
INSERT INTO t2 VALUES (5,'name','pass','mail','Y','v','n','adr','1','1','1');
SELECT t2.userid, MIN(t1.score) FROM t1, t2 WHERE t1.userID=t2.userID GROUP BY t2.userid;
userid MIN(t1.score)
1 1
2 2
3 3
SELECT t2.userid, MIN(t1.score) FROM t1, t2 WHERE t1.userID=t2.userID GROUP BY t2.userid ORDER BY NULL;
userid MIN(t1.score)
1 1
2 2
3 3
SELECT t2.userid, MIN(t1.score) FROM t1, t2 WHERE t1.userID=t2.userID AND t1.spID=2 GROUP BY t2.userid;
userid MIN(t1.score)
1 1
2 2
SELECT t2.userid, MIN(t1.score+0.0) FROM t1, t2 WHERE t1.userID=t2.userID AND t1.spID=2 GROUP BY t2.userid;
userid MIN(t1.score+0.0)
1 1.0
2 2.0
SELECT t2.userid, MIN(t1.score+0.0) FROM t1, t2 WHERE t1.userID=t2.userID AND t1.spID=2 GROUP BY t2.userid ORDER BY NULL;
userid MIN(t1.score+0.0)
2 2.0
1 1.0
EXPLAIN SELECT t2.userid, MIN(t1.score+0.0) FROM t1, t2 WHERE t1.userID=t2.userID AND t1.spID=2 GROUP BY t2.userid ORDER BY NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where; Using temporary
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.userID 1 Using index
drop table t1,t2;
CREATE TABLE t1 (
PID int(10) unsigned NOT NULL auto_increment,
payDate date DEFAULT '0000-00-00' NOT NULL,
recDate datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
URID int(10) unsigned DEFAULT '0' NOT NULL,
CRID int(10) unsigned DEFAULT '0' NOT NULL,
amount int(10) unsigned DEFAULT '0' NOT NULL,
operator int(10) unsigned,
method enum('unknown','cash','dealer','check','card','lazy','delayed','test') DEFAULT 'unknown' NOT NULL,
DIID int(10) unsigned,
reason char(1) binary DEFAULT '' NOT NULL,
code_id int(10) unsigned,
qty mediumint(8) unsigned DEFAULT '0' NOT NULL,
PRIMARY KEY (PID),
KEY URID (URID),
KEY reason (reason),
KEY method (method),
KEY payDate (payDate)
);
INSERT INTO t1 VALUES (1,'1970-01-01','1997-10-17 00:00:00',2529,1,21000,11886,'check',0,'F',16200,6);
SELECT COUNT(P.URID),SUM(P.amount),P.method, MIN(PP.recdate+0) > 19980501000000 AS IsNew FROM t1 AS P JOIN t1 as PP WHERE P.URID = PP.URID GROUP BY method,IsNew;
ERROR 42000: Can't group on 'IsNew'
drop table t1;
CREATE TABLE t1 (
cid mediumint(9) NOT NULL auto_increment,
firstname varchar(32) DEFAULT '' NOT NULL,
surname varchar(32) DEFAULT '' NOT NULL,
PRIMARY KEY (cid)
);
INSERT INTO t1 VALUES (1,'That','Guy');
INSERT INTO t1 VALUES (2,'Another','Gent');
CREATE TABLE t2 (
call_id mediumint(8) NOT NULL auto_increment,
contact_id mediumint(8) DEFAULT '0' NOT NULL,
PRIMARY KEY (call_id),
KEY contact_id (contact_id)
);
lock tables t1 read,t2 write;
INSERT INTO t2 VALUES (10,2);
INSERT INTO t2 VALUES (18,2);
INSERT INTO t2 VALUES (62,2);
INSERT INTO t2 VALUES (91,2);
INSERT INTO t2 VALUES (92,2);
SELECT cid, CONCAT(firstname, ' ', surname), COUNT(call_id) FROM t1 LEFT JOIN t2 ON cid=contact_id WHERE firstname like '%foo%' GROUP BY cid;
cid CONCAT(firstname, ' ', surname) COUNT(call_id)
SELECT cid, CONCAT(firstname, ' ', surname), COUNT(call_id) FROM t1 LEFT JOIN t2 ON cid=contact_id WHERE firstname like '%foo%' GROUP BY cid ORDER BY NULL;
cid CONCAT(firstname, ' ', surname) COUNT(call_id)
SELECT HIGH_PRIORITY cid, CONCAT(firstname, ' ', surname), COUNT(call_id) FROM t1 LEFT JOIN t2 ON cid=contact_id WHERE firstname like '%foo%' GROUP BY cid ORDER BY surname, firstname;
cid CONCAT(firstname, ' ', surname) COUNT(call_id)
drop table t2;
unlock tables;
drop table t1;
CREATE TABLE t1 (
bug_id mediumint(9) NOT NULL auto_increment,
groupset bigint(20) DEFAULT '0' NOT NULL,
assigned_to mediumint(9) DEFAULT '0' NOT NULL,
bug_file_loc text,
bug_severity enum('blocker','critical','major','normal','minor','trivial','enhancement') DEFAULT 'blocker' NOT NULL,
bug_status enum('','NEW','ASSIGNED','REOPENED','RESOLVED','VERIFIED','CLOSED') DEFAULT 'NEW' NOT NULL,
creation_ts datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
delta_ts timestamp,
short_desc mediumtext,
long_desc mediumtext,
op_sys enum('All','Windows 3.1','Windows 95','Windows 98','Windows NT','Windows 2000','Linux','other') DEFAULT 'All' NOT NULL,
priority enum('P1','P2','P3','P4','P5') DEFAULT 'P1' NOT NULL,
product varchar(64) DEFAULT '' NOT NULL,
rep_platform enum('All','PC','VTD-8','Other'),
reporter mediumint(9) DEFAULT '0' NOT NULL,
version varchar(16) DEFAULT '' NOT NULL,
component varchar(50) DEFAULT '' NOT NULL,
resolution enum('','FIXED','INVALID','WONTFIX','LATER','REMIND','DUPLICATE','WORKSFORME') DEFAULT '' NOT NULL,
target_milestone varchar(20) DEFAULT '' NOT NULL,
qa_contact mediumint(9) DEFAULT '0' NOT NULL,
status_whiteboard mediumtext NOT NULL,
votes mediumint(9) DEFAULT '0' NOT NULL,
PRIMARY KEY (bug_id),
KEY assigned_to (assigned_to),
KEY creation_ts (creation_ts),
KEY delta_ts (delta_ts),
KEY bug_severity (bug_severity),
KEY bug_status (bug_status),
KEY op_sys (op_sys),
KEY priority (priority),
KEY product (product),
KEY reporter (reporter),
KEY version (version),
KEY component (component),
KEY resolution (resolution),
KEY target_milestone (target_milestone),
KEY qa_contact (qa_contact),
KEY votes (votes)
);
INSERT INTO t1 VALUES (1,0,0,'','normal','','2000-02-10 09:25:12',20000321114747,'','','Linux','P1','TestProduct','PC',3,'other','TestComponent','','M1',0,'',0);
INSERT INTO t1 VALUES (9,0,0,'','enhancement','','2000-03-10 11:49:36',20000321114747,'','','All','P5','AAAAA','PC',3,'2.00 CD - Pre','BBBBBBBBBBBBB - conversion','','',0,'',0);
INSERT INTO t1 VALUES (10,0,0,'','enhancement','','2000-03-10 18:10:16',20000321114747,'','','All','P4','AAAAA','PC',3,'2.00 CD - Pre','BBBBBBBBBBBBB - conversion','','',0,'',0);
INSERT INTO t1 VALUES (7,0,0,'','critical','','2000-03-09 10:50:21',20000321114747,'','','All','P1','AAAAA','PC',3,'2.00 CD - Pre','BBBBBBBBBBBBB - generic','','',0,'',0);
INSERT INTO t1 VALUES (6,0,0,'','normal','','2000-03-09 10:42:44',20000321114747,'','','All','P2','AAAAA','PC',3,'2.00 CD - Pre','kkkkkkkkkkk lllllllllll','','',0,'',0);
INSERT INTO t1 VALUES (8,0,0,'','major','','2000-03-09 11:32:14',20000321114747,'','','All','P3','AAAAA','PC',3,'2.00 CD - Pre','kkkkkkkkkkk lllllllllll','','',0,'',0);
INSERT INTO t1 VALUES (5,0,0,'','enhancement','','2000-03-09 10:38:59',20000321114747,'','','All','P5','CCC/CCCCCC','PC',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (4,0,0,'','normal','','2000-03-08 18:32:14',20000321114747,'','','other','P2','TestProduct','Other',3,'other','TestComponent2','','',0,'',0);
INSERT INTO t1 VALUES (3,0,0,'','normal','','2000-03-08 18:30:52',20000321114747,'','','other','P2','TestProduct','Other',3,'other','TestComponent','','',0,'',0);
INSERT INTO t1 VALUES (2,0,0,'','enhancement','','2000-03-08 18:24:51',20000321114747,'','','All','P2','TestProduct','Other',4,'other','TestComponent2','','',0,'',0);
INSERT INTO t1 VALUES (11,0,0,'','blocker','','2000-03-13 09:43:41',20000321114747,'','','All','P2','CCC/CCCCCC','PC',5,'7.00','DDDDDDDDD','','',0,'',0);
INSERT INTO t1 VALUES (12,0,0,'','normal','','2000-03-13 16:14:31',20000321114747,'','','All','P2','AAAAA','PC',3,'2.00 CD - Pre','kkkkkkkkkkk lllllllllll','','',0,'',0);
INSERT INTO t1 VALUES (13,0,0,'','normal','','2000-03-15 16:20:44',20000321114747,'','','other','P2','TestProduct','Other',3,'other','TestComponent','','',0,'',0);
INSERT INTO t1 VALUES (14,0,0,'','blocker','','2000-03-15 18:13:47',20000321114747,'','','All','P1','AAAAA','PC',3,'2.00 CD - Pre','BBBBBBBBBBBBB - generic','','',0,'',0);
INSERT INTO t1 VALUES (15,0,0,'','minor','','2000-03-16 18:03:28',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','DDDDDDDDD','','',0,'',0);
INSERT INTO t1 VALUES (16,0,0,'','normal','','2000-03-16 18:33:41',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (17,0,0,'','normal','','2000-03-16 18:34:18',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (18,0,0,'','normal','','2000-03-16 18:34:56',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (19,0,0,'','enhancement','','2000-03-16 18:35:34',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (20,0,0,'','enhancement','','2000-03-16 18:36:23',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (21,0,0,'','enhancement','','2000-03-16 18:37:23',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (22,0,0,'','enhancement','','2000-03-16 18:38:16',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','Administration','','',0,'',0);
INSERT INTO t1 VALUES (23,0,0,'','normal','','2000-03-16 18:58:12',20000321114747,'','','All','P2','CCC/CCCCCC','Other',5,'7.00','DDDDDDDDD','','',0,'',0);
INSERT INTO t1 VALUES (24,0,0,'','normal','','2000-03-17 11:08:10',20000321114747,'','','All','P2','AAAAAAAA-AAA','PC',3,'2.8','Web Interface','','',0,'',0);
INSERT INTO t1 VALUES (25,0,0,'','normal','','2000-03-17 11:10:45',20000321114747,'','','All','P2','AAAAAAAA-AAA','PC',3,'2.8','Web Interface','','',0,'',0);
INSERT INTO t1 VALUES (26,0,0,'','normal','','2000-03-17 11:15:47',20000321114747,'','','All','P2','AAAAAAAA-AAA','PC',3,'2.8','Web Interface','','',0,'',0);
INSERT INTO t1 VALUES (27,0,0,'','normal','','2000-03-17 17:45:41',20000321114747,'','','All','P2','CCC/CCCCCC','PC',5,'7.00','DDDDDDDDD','','',0,'',0);
INSERT INTO t1 VALUES (28,0,0,'','normal','','2000-03-20 09:51:45',20000321114747,'','','Windows NT','P2','TestProduct','PC',8,'other','TestComponent','','',0,'',0);
INSERT INTO t1 VALUES (29,0,0,'','normal','','2000-03-20 11:15:09',20000321114747,'','','All','P5','AAAAAAAA-AAA','PC',3,'2.8','Web Interface','','',0,'',0);
CREATE TABLE t2 (
value tinytext,
program varchar(64),
initialowner tinytext NOT NULL,
initialqacontact tinytext NOT NULL,
description mediumtext NOT NULL
);
INSERT INTO t2 VALUES ('TestComponent','TestProduct','id0001','','');
INSERT INTO t2 VALUES ('BBBBBBBBBBBBB - conversion','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('BBBBBBBBBBBBB - generic','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('TestComponent2','TestProduct','id0001','','');
INSERT INTO t2 VALUES ('BBBBBBBBBBBBB - eeeeeeeee','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('kkkkkkkkkkk lllllllllll','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('Test Procedures','AAAAA','id0001','','');
INSERT INTO t2 VALUES ('Documentation','AAAAA','id0003','','');
INSERT INTO t2 VALUES ('DDDDDDDDD','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Eeeeeeee Lite','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Eeeeeeee Full','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Administration','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Distribution','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Setup','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Unspecified','CCC/CCCCCC','id0002','','');
INSERT INTO t2 VALUES ('Web Interface','AAAAAAAA-AAA','id0001','','');
INSERT INTO t2 VALUES ('Host communication','AAAAA','id0001','','');
select value,description,bug_id from t2 left join t1 on t2.program=t1.product and t2.value=t1.component where program="AAAAA";
value description bug_id
BBBBBBBBBBBBB - conversion 9
BBBBBBBBBBBBB - conversion 10
BBBBBBBBBBBBB - generic 7
BBBBBBBBBBBBB - generic 14
BBBBBBBBBBBBB - eeeeeeeee NULL
kkkkkkkkkkk lllllllllll 6
kkkkkkkkkkk lllllllllll 8
kkkkkkkkkkk lllllllllll 12
Test Procedures NULL
Documentation NULL
Host communication NULL
select value,description,COUNT(bug_id) from t2 left join t1 on t2.program=t1.product and t2.value=t1.component where program="AAAAA" group by value;
value description COUNT(bug_id)
BBBBBBBBBBBBB - conversion 2
BBBBBBBBBBBBB - eeeeeeeee 0
BBBBBBBBBBBBB - generic 2
Documentation 0
Host communication 0
kkkkkkkkkkk lllllllllll 3
Test Procedures 0
select value,description,COUNT(bug_id) from t2 left join t1 on t2.program=t1.product and t2.value=t1.component where program="AAAAA" group by value having COUNT(bug_id) IN (0,2);
value description COUNT(bug_id)
BBBBBBBBBBBBB - conversion 2
BBBBBBBBBBBBB - eeeeeeeee 0
BBBBBBBBBBBBB - generic 2
Documentation 0
Host communication 0
Test Procedures 0
drop table t1,t2;
create table t1 (foo int);
insert into t1 values (1);
select 1+1, "a",count(*) from t1 where foo in (2);
1+1 a count(*)
2 a 0
insert into t1 values (1);
select 1+1,"a",count(*) from t1 where foo in (2);
1+1 a count(*)
2 a 0
drop table t1;
CREATE TABLE t1 (
spID int(10) unsigned,
userID int(10) unsigned,
score smallint(5) unsigned,
key (spid),
key (score)
);
INSERT INTO t1 VALUES (1,1,1),(2,2,2),(2,1,1),(3,3,3),(4,3,3),(5,3,3),(6,3,3),(7,3,3);
explain select userid,count(*) from t1 group by userid desc;
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
explain select userid,count(*) from t1 group by userid desc order by null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using temporary
select userid,count(*) from t1 group by userid desc;
userid count(*)
3 5
2 1
1 2
select userid,count(*) from t1 group by userid desc having (count(*)+1) IN (4,3);
userid count(*)
1 2
select userid,count(*) from t1 group by userid desc having 3 IN (1,COUNT(*));
userid count(*)
explain select spid,count(*) from t1 where spid between 1 and 2 group by spid desc;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range spID spID 5 NULL 3 Using where; Using index
explain select spid,count(*) from t1 where spid between 1 and 2 group by spid;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range spID spID 5 NULL 3 Using where; Using index
explain select spid,count(*) from t1 where spid between 1 and 2 group by spid order by null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range spID spID 5 NULL 3 Using where; Using index
select spid,count(*) from t1 where spid between 1 and 2 group by spid;
spid count(*)
1 1
2 2
select spid,count(*) from t1 where spid between 1 and 2 group by spid desc;
spid count(*)
2 2
1 1
explain extended select sql_big_result spid,sum(userid) from t1 group by spid desc;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 100.00 Using filesort
Warnings:
Note 1003 select sql_big_result `test`.`t1`.`spID` AS `spid`,sum(`test`.`t1`.`userID`) AS `sum(userid)` from `test`.`t1` group by `test`.`t1`.`spID` desc
explain select sql_big_result spid,sum(userid) from t1 group by spid desc order by null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using filesort
select sql_big_result spid,sum(userid) from t1 group by spid desc;
spid sum(userid)
7 3
6 3
5 3
4 3
3 3
2 3
1 1
explain select sql_big_result score,count(*) from t1 group by score desc;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL score 3 NULL 8 Using index; Using filesort
explain select sql_big_result score,count(*) from t1 group by score desc order by null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL score 3 NULL 8 Using index; Using filesort
select sql_big_result score,count(*) from t1 group by score desc;
score count(*)
3 5
2 1
1 2
drop table t1;
create table t1 (a date default null, b date default null);
insert t1 values ('1999-10-01','2000-01-10'), ('1997-01-01','1998-10-01');
select a,min(b) c,count(distinct rand()) from t1 group by a having c<a + interval 1 day;
a c count(distinct rand())
drop table t1;
CREATE TABLE t1 (a char(1));
INSERT INTO t1 VALUES ('A'),('B'),('A'),('B'),('A'),('B'),(NULL),('a'),('b'),(NULL),('A'),('B'),(NULL);
flush status;
SELECT a FROM t1 GROUP BY a;
a
NULL
A
B
SELECT a,count(*) FROM t1 GROUP BY a;
a count(*)
NULL 3
A 5
B 5
SELECT a FROM t1 GROUP BY binary a;
a
NULL
A
B
a
b
SELECT a,count(*) FROM t1 GROUP BY binary a;
a count(*)
NULL 3
A 4
B 4
a 1
b 1
SELECT binary a FROM t1 GROUP BY 1;
binary a
NULL
A
B
a
b
SELECT binary a,count(*) FROM t1 GROUP BY 1;
binary a count(*)
NULL 3
A 4
B 4
a 1
b 1
show status like 'Created%tables';
Variable_name Value
Created_tmp_disk_tables 0
Created_tmp_tables 6
set tmp_memory_table_size=0;
SELECT a FROM t1 GROUP BY a;
a
NULL
A
B
SELECT a,count(*) FROM t1 GROUP BY a;
a count(*)
NULL 3
A 5
B 5
SELECT a FROM t1 GROUP BY binary a;
a
NULL
A
B
a
b
SELECT a,count(*) FROM t1 GROUP BY binary a;
a count(*)
NULL 3
A 4
B 4
a 1
b 1
SELECT binary a FROM t1 GROUP BY 1;
binary a
NULL
A
B
a
b
SELECT binary a,count(*) FROM t1 GROUP BY 1;
binary a count(*)
NULL 3
A 4
B 4
a 1
b 1
show status like 'Created%tables';
Variable_name Value
Created_tmp_disk_tables 6
Created_tmp_tables 12
set tmp_memory_table_size=default;
drop table t1;
CREATE TABLE t1 (
`a` char(193) default NULL,
`b` char(63) default NULL
);
INSERT INTO t1 VALUES ('abc','def'),('hij','klm');
SELECT CONCAT(a, b) FROM t1 GROUP BY 1;
CONCAT(a, b)
abcdef
hijklm
SELECT CONCAT(a, b),count(*) FROM t1 GROUP BY 1;
CONCAT(a, b) count(*)
abcdef 1
hijklm 1
SELECT CONCAT(a, b),count(distinct a) FROM t1 GROUP BY 1;
CONCAT(a, b) count(distinct a)
abcdef 1
hijklm 1
SELECT 1 FROM t1 GROUP BY CONCAT(a, b);
1
1
1
INSERT INTO t1 values ('hij','klm');
SELECT CONCAT(a, b),count(*) FROM t1 GROUP BY 1;
CONCAT(a, b) count(*)
abcdef 1
hijklm 2
DROP TABLE t1;
create table t1 (One int unsigned, Two int unsigned, Three int unsigned, Four int unsigned);
insert into t1 values (1,2,1,4),(1,2,2,4),(1,2,3,4),(1,2,4,4),(1,1,1,4),(1,1,2,4),(1,1,3,4),(1,1,4,4),(1,3,1,4),(1,3,2,4),(1,3,3,4),(1,3,4,4);
select One, Two, sum(Four) from t1 group by One,Two;
One Two sum(Four)
1 1 16
1 2 16
1 3 16
drop table t1;
create table t1 (id integer primary key not null auto_increment, gender char(1));
insert into t1 values (NULL, 'M'), (NULL, 'F'),(NULL, 'F'),(NULL, 'F'),(NULL, 'M');
create table t2 (user_id integer not null, date date);
insert into t2 values (1, '2002-06-09'),(2, '2002-06-09'),(1, '2002-06-09'),(3, '2002-06-09'),(4, '2002-06-09'),(4, '2002-06-09');
select u.gender as gender, count(distinct u.id) as dist_count, (count(distinct u.id)/5*100) as percentage from t1 u, t2 l where l.user_id = u.id group by u.gender;
gender dist_count percentage
F 3 60.0000
M 1 20.0000
select u.gender as gender, count(distinct u.id) as dist_count, (count(distinct u.id)/5*100) as percentage from t1 u, t2 l where l.user_id = u.id group by u.gender order by percentage;
gender dist_count percentage
M 1 20.0000
F 3 60.0000
drop table t1,t2;
CREATE TABLE t1 (ID1 int, ID2 int, ID int NOT NULL AUTO_INCREMENT,PRIMARY KEY(ID
));
insert into t1 values (1,244,NULL),(2,243,NULL),(134,223,NULL),(185,186,NULL);
SET @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='outer_join_with_cache=off';
select S.ID as xID, S.ID1 as xID1 from t1 as S left join t1 as yS on S.ID1 between yS.ID1 and yS.ID2;
xID xID1
1 1
2 2
2 2
3 134
3 134
3 134
4 185
4 185
4 185
4 185
select S.ID as xID, S.ID1 as xID1, repeat('*',count(distinct yS.ID)) as Level from t1 as S left join t1 as yS on S.ID1 between yS.ID1 and yS.ID2 group by xID order by xID1;
xID xID1 Level
1 1 *
2 2 **
3 134 ***
4 185 ****
SET optimizer_switch=@save_optimizer_switch;
drop table t1;
CREATE TABLE t1 (
pid int(11) unsigned NOT NULL default '0',
c1id int(11) unsigned default NULL,
c2id int(11) unsigned default NULL,
value int(11) unsigned NOT NULL default '0',
UNIQUE KEY pid2 (pid,c1id,c2id),
UNIQUE KEY pid (pid,value)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1, 1, NULL, 1),(1, 2, NULL, 2),(1, NULL, 3, 3),(1, 4, NULL, 4),(1, 5, NULL, 5);
CREATE TABLE t2 (
id int(11) unsigned NOT NULL default '0',
active enum('Yes','No') NOT NULL default 'Yes',
PRIMARY KEY (id)
) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1, 'Yes'),(2, 'No'),(4, 'Yes'),(5, 'No');
CREATE TABLE t3 (
id int(11) unsigned NOT NULL default '0',
active enum('Yes','No') NOT NULL default 'Yes',
PRIMARY KEY (id)
);
INSERT INTO t3 VALUES (3, 'Yes');
select * from t1 AS m LEFT JOIN t2 AS c1 ON m.c1id =
c1.id AND c1.active = 'Yes' LEFT JOIN t3 AS c2 ON m.c2id = c2.id AND
c2.active = 'Yes' WHERE m.pid=1 AND (c1.id IS NOT NULL OR c2.id IS NOT NULL);
pid c1id c2id value id active id active
1 1 NULL 1 1 Yes NULL NULL
1 NULL 3 3 NULL NULL 3 Yes
1 4 NULL 4 4 Yes NULL NULL
select max(value) from t1 AS m LEFT JOIN t2 AS c1 ON
m.c1id = c1.id AND c1.active = 'Yes' LEFT JOIN t3 AS c2 ON m.c2id =
c2.id AND c2.active = 'Yes' WHERE m.pid=1 AND (c1.id IS NOT NULL OR c2.id IS
NOT NULL);
max(value)
4
drop table t1,t2,t3;
create table t1 (a blob null);
insert into t1 values (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(""),(""),(""),("b");
select a,count(*) from t1 group by a;
a count(*)
NULL 9
3
b 1
set tmp_memory_table_size=0;
select a,count(*) from t1 group by a;
a count(*)
NULL 9
3
b 1
drop table t1;
set tmp_memory_table_size=default;
SET @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity,@save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='outer_join_with_cache=off',@@optimizer_use_condition_selectivity=4;
create table t1 (a int not null, b int not null);
insert into t1 values (1,1),(1,2),(3,1),(3,2),(2,2),(2,1);
create table t2 (a int not null, b int not null, key(a));
insert into t2 values (1,3),(3,1),(2,2),(1,1);
select t1.a,t2.b from t1,t2 where t1.a=t2.a group by t1.a,t2.b;
a b
1 1
1 3
2 2
3 1
select t1.a,t2.b from t1,t2 where t1.a=t2.a group by t1.a,t2.b ORDER BY NULL;
a b
1 1
1 3
2 2
3 1
explain select t1.a,t2.b from t1,t2 where t1.a=t2.a group by 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 6 Using temporary; Using filesort
1 SIMPLE t2 ref a a 4 test.t1.a 1
explain select t1.a,t2.b from t1,t2 where t1.a=t2.a group by t1.a,t2.b ORDER BY NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using temporary
1 SIMPLE t2 ref a a 4 test.t1.a 1
drop table t1,t2;
SET @@optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity,@@optimizer_switch=@save_optimizer_switch;
create table t1 (a int, b int);
insert into t1 values (1, 4),(10, 40),(1, 4),(10, 43),(1, 4),(10, 41),(1, 4),(10, 43),(1, 4);
select a, MAX(b), INTERVAL (MAX(b), 1,3,10,30,39,40,50,60,100,1000) from t1 group by a;
a MAX(b) INTERVAL (MAX(b), 1,3,10,30,39,40,50,60,100,1000)
1 4 2
10 43 6
select a, MAX(b), CASE MAX(b) when 4 then 4 when 43 then 43 else 0 end from t1 group by a;
a MAX(b) CASE MAX(b) when 4 then 4 when 43 then 43 else 0 end
1 4 4
10 43 43
select a, MAX(b), FIELD(MAX(b), '43', '4', '5') from t1 group by a;
a MAX(b) FIELD(MAX(b), '43', '4', '5')
1 4 2
10 43 1
select a, MAX(b), CONCAT_WS(MAX(b), '43', '4', '5') from t1 group by a;
a MAX(b) CONCAT_WS(MAX(b), '43', '4', '5')
1 4 434445
10 43 43434435
select a, MAX(b), ELT(MAX(b), 'a', 'b', 'c', 'd', 'e', 'f') from t1 group by a;
a MAX(b) ELT(MAX(b), 'a', 'b', 'c', 'd', 'e', 'f')
1 4 d
10 43 NULL
select a, MAX(b), MAKE_SET(MAX(b), 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h') from t1 group by a;
a MAX(b) MAKE_SET(MAX(b), 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h')
1 4 c
10 43 a,b,d,f
drop table t1;
create table t1 (id int not null, qty int not null);
insert into t1 values (1,2),(1,3),(2,4),(2,5);
select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sum(qty)>2 and cqty>1;
id sqty cqty
1 5 2
2 9 2
select id, sum(qty) as sqty from t1 group by id having sqty>2 and count(qty)>1;
id sqty
1 5
2 9
select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sqty>2 and cqty>1;
id sqty cqty
1 5 2
2 9 2
select id, sum(qty) as sqty, count(qty) as cqty from t1 group by id having sum(qty)>2 and count(qty)>1;
id sqty cqty
1 5 2
2 9 2
select count(*), case interval(qty,2,3,4,5,6,7,8) when -1 then NULL when 0 then "zero" when 1 then "one" when 2 then "two" end as category from t1 group by category;
count(*) category
2 NULL
1 one
1 two
select count(*), interval(qty,2,3,4,5,6,7,8) as category from t1 group by category;
count(*) category
1 1
1 2
1 3
1 4
drop table t1;
CREATE TABLE t1 (
userid int(10) unsigned,
score smallint(5) unsigned,
key (score)
);
INSERT INTO t1 VALUES (1,1),(2,2),(1,1),(3,3),(3,3),(3,3),(3,3),(3,3);
SELECT userid,count(*) FROM t1 GROUP BY userid DESC;
userid count(*)
3 5
2 1
1 2
EXPLAIN SELECT userid,count(*) FROM t1 GROUP BY userid DESC;
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
DROP TABLE t1;
CREATE TABLE t1 (
i int(11) default NULL,
j int(11) default NULL
);
INSERT INTO t1 VALUES (1,2),(2,3),(4,5),(3,5),(1,5),(23,5);
SELECT i, COUNT(DISTINCT(i)) FROM t1 GROUP BY j ORDER BY NULL;
i COUNT(DISTINCT(i))
1 1
2 1
4 4
explain SELECT i, COUNT(DISTINCT(i)) FROM t1 GROUP BY j ORDER BY NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort
DROP TABLE t1;
create table t1 (a int);
insert into t1 values(null);
select min(a) is null from t1;
min(a) is null
1
select min(a) is null or null from t1;
min(a) is null or null
1
select 1 and min(a) is null from t1;
1 and min(a) is null
1
drop table t1;
create table t1 ( col1 int, col2 int );
insert into t1 values (1,1),(1,2),(1,3),(2,1),(2,2);
select group_concat( distinct col1 ) as alias from t1
group by col2 having alias like '%';
alias
1,2
1,2
1
drop table t1;
create table t1 (a integer, b integer, c integer);
insert into t1 (a,b) values (1,2),(1,3),(2,5);
select a, 0.1*0+1 r2, sum(1) r1 from t1 where a = 1 group by a having r1>1 and r2=1;
a r2 r1
1 1.0 2
select a, round(rand(100)*10) r2, sum(1) r1 from t1 where a = 1 group by a having r1>1 and r2<=2;
a r2 r1
1 2 2
select a, round(rand(100)*10) r2, sum(1) r1 from t1 group by a having r1>1 and r2<=2;
a r2 r1
1 2 2
select a,sum(b) from t1 where a=1 group by c;
a sum(b)
1 5
select a*sum(b) from t1 where a=1 group by c;
a*sum(b)
5
select a*sum(b) as f1 from t1 where a=1 group by c having f1 <= 10;
f1
5
select a,a*sum(b) as f1 from t1 where a=1 group by c having a*sum(b)+0 <= 10;
a f1
1 5
select sum(a)*sum(b) from t1 where a=1 group by c;
sum(a)*sum(b)
10
select a,sum(b) from t1 where a=1 group by c having a=1;
a sum(b)
1 5
select a as d,sum(b) from t1 where a=1 group by c having d=1;
d sum(b)
1 5
select sum(a)*sum(b) as d from t1 where a=1 group by c having d > 0;
d
10
drop table t1;
create table t1(a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(8),(9);
create table t2 (
a int,
b varchar(200) NOT NULL,
c varchar(50) NOT NULL,
d varchar(100) NOT NULL,
primary key (a,b(132),c,d),
key a (a,b)
) charset=utf8;
insert into t2 select
x3.a, -- 3
concat('val-', x3.a + 3*x4.a), -- 12
concat('val-', @a:=x3.a + 3*x4.a + 12*C.a), -- 120
concat('val-', @a + 120*D.a)
from t1 x3, t1 x4, t1 C, t1 D where x3.a < 3 and x4.a < 4 and D.a < 4;
delete from t2 where a = 2 and b = 'val-2' order by a,b,c,d limit 30;
explain select c from t2 where a = 2 and b = 'val-2' group by c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ref PRIMARY,a PRIMARY 402 const,const 6 Using where
select c from t2 where a = 2 and b = 'val-2' group by c;
c
val-74
val-98
drop table t1,t2;
create table t1 (b int4 unsigned not null);
insert into t1 values(3000000000);
select * from t1;
b
3000000000
select min(b) from t1;
min(b)
3000000000
drop table t1;
CREATE TABLE t1 (id int PRIMARY KEY, user_id int, hostname longtext);
INSERT INTO t1 VALUES
(1, 7, 'cache-dtc-af05.proxy.aol.com'),
(2, 3, 'what.ever.com'),
(3, 7, 'cache-dtc-af05.proxy.aol.com'),
(4, 7, 'cache-dtc-af05.proxy.aol.com');
SELECT hostname, COUNT(DISTINCT user_id) as no FROM t1
WHERE hostname LIKE '%aol%'
GROUP BY hostname;
hostname no
cache-dtc-af05.proxy.aol.com 1
DROP TABLE t1;
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (1,2), (1,3);
SELECT a, b FROM t1 GROUP BY 'const';
a b
1 2
SELECT DISTINCT a, b FROM t1 GROUP BY 'const';
a b
1 2
DROP TABLE t1;
CREATE TABLE t1 (id INT, dt DATETIME);
INSERT INTO t1 VALUES ( 1, '2005-05-01 12:30:00' );
INSERT INTO t1 VALUES ( 1, '2005-05-01 12:30:00' );
INSERT INTO t1 VALUES ( 1, '2005-05-01 12:30:00' );
INSERT INTO t1 VALUES ( 1, '2005-05-01 12:30:00' );
SELECT dt DIV 1 AS f, id FROM t1 GROUP BY f;
f id
20050501123000 1
DROP TABLE t1;
CREATE TABLE t1 (id varchar(20) NOT NULL);
INSERT INTO t1 VALUES ('trans1'), ('trans2');
CREATE TABLE t2 (id varchar(20) NOT NULL, err_comment blob NOT NULL);
INSERT INTO t2 VALUES ('trans1', 'a problem');
SELECT COUNT(DISTINCT(t1.id)), LEFT(err_comment, 256) AS comment
FROM t1 LEFT JOIN t2 ON t1.id=t2.id GROUP BY comment;
COUNT(DISTINCT(t1.id)) comment
1 NULL
1 a problem
DROP TABLE t1, t2;
create table t1 (f1 date);
insert into t1 values('2005-06-06');
insert into t1 values('2005-06-06');
select date(left(f1+0,8)) from t1 group by 1;
date(left(f1+0,8))
2005-06-06
drop table t1;
CREATE TABLE t1 (n int);
INSERT INTO t1 VALUES (1);
SELECT n+1 AS n FROM t1 GROUP BY n;
n
2
Warnings:
Warning 1052 Column 'n' in group statement is ambiguous
DROP TABLE t1;
create table t1(f1 varchar(5) key);
insert into t1 values (1),(2);
select sql_buffer_result max(f1) is null from t1;
max(f1) is null
0
select sql_buffer_result max(f1)+1 from t1;
max(f1)+1
3
drop table t1;
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (1),(2);
SELECT a FROM t1 GROUP BY 'a';
a
1
SELECT a FROM t1 GROUP BY "a";
a
1
SELECT a FROM t1 GROUP BY `a`;
a
1
2
set sql_mode=ANSI_QUOTES;
SELECT a FROM t1 GROUP BY "a";
a
1
2
SELECT a FROM t1 GROUP BY 'a';
a
1
SELECT a FROM t1 GROUP BY `a`;
a
1
2
set sql_mode='';
SELECT a FROM t1 HAVING 'a' > 1;
a
Warnings:
Warning 1292 Truncated incorrect DECIMAL value: 'a'
SELECT a FROM t1 HAVING "a" > 1;
a
Warnings:
Warning 1292 Truncated incorrect DECIMAL value: 'a'
SELECT a FROM t1 HAVING `a` > 1;
a
2
SELECT a FROM t1 ORDER BY 'a' DESC;
a
1
2
SELECT a FROM t1 ORDER BY "a" DESC;
a
1
2
SELECT a FROM t1 ORDER BY `a` DESC;
a
2
1
DROP TABLE t1;
CREATE TABLE t1 (
f1 int(10) unsigned NOT NULL auto_increment primary key,
f2 varchar(100) NOT NULL default ''
);
CREATE TABLE t2 (
f1 varchar(10) NOT NULL default '',
f2 char(3) NOT NULL default '',
PRIMARY KEY (`f1`),
KEY `k1` (`f2`,`f1`)
);
INSERT INTO t1 values(NULL, '');
INSERT INTO `t2` VALUES ('486878','WDT'),('486910','WDT');
SELECT SQL_BUFFER_RESULT avg(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
avg(t2.f1)
SELECT avg(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
avg(t2.f1)
DROP TABLE t1, t2;
create table t1 (c1 char(3), c2 char(3));
create table t2 (c3 char(3), c4 char(3));
insert into t1 values ('aaa', 'bb1'), ('aaa', 'bb2');
insert into t2 values ('aaa', 'bb1'), ('aaa', 'bb2');
select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
group by c2;
c2
aaa
aaa
Warnings:
Warning 1052 Column 'c2' in group statement is ambiguous
show warnings;
Level Code Message
Warning 1052 Column 'c2' in group statement is ambiguous
select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
group by t1.c1;
c2
aaa
show warnings;
Level Code Message
drop table t1, t2;
CREATE TABLE t1 (a tinyint(3), b varchar(255), PRIMARY KEY (a));
INSERT INTO t1 VALUES (1,'-----'), (6,'Allemagne'), (17,'Autriche'),
(25,'Belgique'), (54,'Danemark'), (62,'Espagne'), (68,'France'),
(100,"No land"), (101,"No land");
CREATE TABLE t2 (a tinyint(3), b tinyint(3), PRIMARY KEY (a), KEY b (b));
INSERT INTO t2 VALUES (1,1), (2,1), (6,6), (18,17), (15,25), (16,25),
(17,25), (10,54), (5,62),(3,68);
CREATE VIEW v1 AS select t1.a, concat(t1.b,'') AS b, t1.b as real_b from t1;
explain
SELECT straight_join sql_no_cache v1.a, v1.b, v1.real_b from t2, v1
where t2.b=v1.a GROUP BY t2.b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index b b 2 NULL 10 Using where; Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 1 test.t2.b 1
SELECT straight_join sql_no_cache v1.a, v1.b, v1.real_b from t2, v1
where t2.b=v1.a GROUP BY t2.b;
a b real_b
1 ----- -----
6 Allemagne Allemagne
17 Autriche Autriche
25 Belgique Belgique
54 Danemark Danemark
62 Espagne Espagne
68 France France
DROP VIEW v1;
DROP TABLE t1,t2;
CREATE TABLE t1 (a INT PRIMARY KEY, b INT, key (b));
INSERT INTO t1 VALUES (1, 1);
INSERT INTO t1 SELECT a + 1 , MOD(a + 1 , 20) FROM t1;
INSERT INTO t1 SELECT a + 2 , MOD(a + 2 , 20) FROM t1;
INSERT INTO t1 SELECT a + 4 , MOD(a + 4 , 20) FROM t1;
INSERT INTO t1 SELECT a + 8 , MOD(a + 8 , 20) FROM t1;
INSERT INTO t1 SELECT a + 16, MOD(a + 16, 20) FROM t1;
INSERT INTO t1 SELECT a + 32, MOD(a + 32, 20) FROM t1;
INSERT INTO t1 SELECT a + 64, MOD(a + 64, 20) FROM t1;
SELECT MIN(b), MAX(b) from t1;
MIN(b) MAX(b)
0 19
EXPLAIN SELECT b, sum(1) FROM t1 GROUP BY b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL b 5 NULL 128 Using index
EXPLAIN SELECT SQL_BIG_RESULT b, sum(1) FROM t1 GROUP BY b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL b 5 NULL 128 Using index; Using filesort
SELECT b, sum(1) FROM t1 GROUP BY b;
b sum(1)
0 6
1 7
2 7
3 7
4 7
5 7
6 7
7 7
8 7
9 6
10 6
11 6
12 6
13 6
14 6
15 6
16 6
17 6
18 6
19 6
SELECT SQL_BIG_RESULT b, sum(1) FROM t1 GROUP BY b;
b sum(1)
0 6
1 7
2 7
3 7
4 7
5 7
6 7
7 7
8 7
9 6
10 6
11 6
12 6
13 6
14 6
15 6
16 6
17 6
18 6
19 6
DROP TABLE t1;
CREATE TABLE t1 (a INT PRIMARY KEY, b INT);
INSERT INTO t1 VALUES (1,1),(2,1),(3,2),(4,2),(5,3),(6,3);
SET SQL_MODE = 'ONLY_FULL_GROUP_BY';
SELECT MAX(a)-MIN(a) FROM t1 GROUP BY b;
MAX(a)-MIN(a)
1
1
1
SELECT CEILING(MIN(a)) FROM t1 GROUP BY b;
CEILING(MIN(a))
1
3
5
SELECT CASE WHEN AVG(a)>=0 THEN 'Positive' ELSE 'Negative' END FROM t1
GROUP BY b;
CASE WHEN AVG(a)>=0 THEN 'Positive' ELSE 'Negative' END
Positive
Positive
Positive
SELECT a + 1 FROM t1 GROUP BY a;
a + 1
2
3
4
5
6
7
SELECT a + b FROM t1 GROUP BY b;
ERROR 42000: 'test.t1.a' isn't in GROUP BY
SELECT (SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1)
FROM t1 AS t1_outer;
(SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1)
1
2
3
4
5
6
SELECT 1 FROM t1 as t1_outer GROUP BY a
HAVING (SELECT t1_outer.a FROM t1 AS t1_inner GROUP BY b LIMIT 1);
1
1
1
1
1
1
1
SELECT (SELECT t1_outer.a FROM t1 AS t1_inner LIMIT 1)
FROM t1 AS t1_outer GROUP BY t1_outer.b;
ERROR 42000: 'test.t1_outer.a' isn't in GROUP BY
SELECT 1 FROM t1 as t1_outer GROUP BY a
HAVING (SELECT t1_outer.b FROM t1 AS t1_inner LIMIT 1);
ERROR 42S22: Unknown column 'test.t1_outer.b' in 'field list'
SELECT (SELECT SUM(t1_inner.a) FROM t1 AS t1_inner LIMIT 1)
FROM t1 AS t1_outer GROUP BY t1_outer.b;
(SELECT SUM(t1_inner.a) FROM t1 AS t1_inner LIMIT 1)
21
21
21
SELECT (SELECT SUM(t1_inner.a) FROM t1 AS t1_inner GROUP BY t1_inner.b LIMIT 1)
AS m
FROM t1 AS t1_outer;
m
3
3
3
3
3
3
SELECT (SELECT SUM(t1_outer.a) FROM t1 AS t1_inner LIMIT 1)
FROM t1 AS t1_outer GROUP BY t1_outer.b;
ERROR 42000: 'test.t1_outer.a' isn't in GROUP BY
SELECT 1 FROM t1 as t1_outer
WHERE (SELECT t1_outer.b FROM t1 AS t1_inner GROUP BY t1_inner.b LIMIT 1);
1
1
1
1
1
1
1
SELECT b FROM t1 GROUP BY b HAVING CEILING(b) > 0;
b
1
2
3
SELECT 1 FROM t1 GROUP BY b HAVING b = 2 OR b = 3 OR SUM(a) > 12;
1
1
1
SELECT 1 FROM t1 GROUP BY b HAVING ROW (b,b) = ROW (1,1);
1
1
SELECT 1 FROM t1 GROUP BY b HAVING a = 2;
ERROR 42S22: Unknown column 'a' in 'having clause'
SELECT 1 FROM t1 GROUP BY SUM(b);
ERROR HY000: Invalid use of group function
SELECT b FROM t1 AS t1_outer GROUP BY a HAVING t1_outer.a IN
(SELECT SUM(t1_inner.b)+t1_outer.b FROM t1 AS t1_inner GROUP BY t1_inner.a
HAVING SUM(t1_inner.b)+t1_outer.b > 5);
ERROR 42000: 'test.t1_outer.b' isn't in GROUP BY
DROP TABLE t1;
SET SQL_MODE = '';
SET SQL_MODE = 'ONLY_FULL_GROUP_BY';
create table t1(f1 int, f2 int);
select * from t1 group by f1;
ERROR 42000: 'test.t1.f2' isn't in GROUP BY
select * from t1 group by f2;
ERROR 42000: 'test.t1.f1' isn't in GROUP BY
select * from t1 group by f1, f2;
f1 f2
select t1.f1,t.* from t1, t1 t group by 1;
ERROR 42000: 'test.t.f1' isn't in GROUP BY
drop table t1;
SET SQL_MODE = '';
CREATE TABLE t1(
id INT AUTO_INCREMENT PRIMARY KEY,
c1 INT NOT NULL,
c2 INT NOT NULL,
UNIQUE KEY (c2,c1));
INSERT INTO t1(c1,c2) VALUES (5,1), (4,1), (3,5), (2,3), (1,3);
SELECT * FROM t1 ORDER BY c1;
id c1 c2
5 1 3
4 2 3
3 3 5
2 4 1
1 5 1
SELECT * FROM t1 GROUP BY id ORDER BY c1;
id c1 c2
5 1 3
4 2 3
3 3 5
2 4 1
1 5 1
SELECT * FROM t1 GROUP BY id ORDER BY id DESC;
id c1 c2
5 1 3
4 2 3
3 3 5
2 4 1
1 5 1
SELECT * FROM t1 GROUP BY c2 ,c1, id ORDER BY c2, c1;
id c1 c2
2 4 1
1 5 1
5 1 3
4 2 3
3 3 5
SELECT * FROM t1 GROUP BY c2, c1, id ORDER BY c2 DESC, c1;
id c1 c2
3 3 5
5 1 3
4 2 3
2 4 1
1 5 1
SELECT * FROM t1 GROUP BY c2, c1, id ORDER BY c2 DESC, c1 DESC;
id c1 c2
3 3 5
4 2 3
5 1 3
1 5 1
2 4 1
SELECT * FROM t1 GROUP BY c2 ORDER BY c2, c1;
id c1 c2
1 5 1
4 2 3
3 3 5
SELECT * FROM t1 GROUP BY c2 ORDER BY c2 DESC, c1;
id c1 c2
3 3 5
4 2 3
1 5 1
SELECT * FROM t1 GROUP BY c2 ORDER BY c2 DESC, c1 DESC;
id c1 c2
3 3 5
4 2 3
1 5 1
DROP TABLE t1;
#
# Bug#27219: Aggregate functions in ORDER BY.
#
SET @save_sql_mode=@@sql_mode;
SET @@sql_mode='ONLY_FULL_GROUP_BY';
CREATE TABLE t1 (a INT, b INT, c INT DEFAULT 0);
INSERT INTO t1 (a, b) VALUES (3,3), (2,2), (3,3), (2,2), (3,3), (4,4);
CREATE TABLE t2 SELECT * FROM t1;
SELECT 1 FROM t1 ORDER BY COUNT(*);
1
1
SELECT 1 FROM t1 ORDER BY COUNT(*) + 1;
1
1
SELECT 1 FROM t1 ORDER BY COUNT(*) + a;
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT 1 FROM t1 ORDER BY COUNT(*), 1;
1
1
SELECT 1 FROM t1 ORDER BY COUNT(*), a;
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT 1 FROM t1 ORDER BY SUM(a);
1
1
SELECT 1 FROM t1 ORDER BY SUM(a + 1);
1
1
SELECT 1 FROM t1 ORDER BY SUM(a) + 1;
1
1
SELECT 1 FROM t1 ORDER BY SUM(a), b;
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT a FROM t1 ORDER BY COUNT(b);
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT t1.a FROM t1 ORDER BY (SELECT SUM(t2.a) FROM t2);
a
3
2
3
2
3
4
SELECT t1.a FROM t1 ORDER BY (SELECT SUM(t2.a), t2.a FROM t2);
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT t1.a FROM t1 ORDER BY (SELECT SUM(t2.a) FROM t2 ORDER BY t2.a);
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT t1.a FROM t1 ORDER BY (SELECT t2.a FROM t2 ORDER BY SUM(t2.b) LIMIT 1);
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT t1.a FROM t1
WHERE t1.a = (SELECT t2.a FROM t2 ORDER BY SUM(t2.b) LIMIT 1);
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT t1.a FROM t1 GROUP BY t1.a
HAVING t1.a = (SELECT t2.a FROM t2 ORDER BY SUM(t2.a) LIMIT 1);
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT t1.a FROM t1 GROUP BY t1.a
HAVING t1.a IN (SELECT t2.a FROM t2 ORDER BY SUM(t1.b));
a
2
3
4
SELECT t1.a FROM t1 GROUP BY t1.a
HAVING t1.a IN (SELECT t2.a FROM t2 ORDER BY t2.a, SUM(t2.b));
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT t1.a FROM t1 GROUP BY t1.a
HAVING t1.a > ANY (SELECT t2.a FROM t2 ORDER BY t2.a, SUM(t2.b));
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT t1.a FROM t1
WHERE t1.a = (SELECT t2.a FROM t2 ORDER BY SUM(t1.b));
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT 1 FROM t1 GROUP BY t1.a
HAVING (SELECT AVG(SUM(t1.b) + 1) FROM t2 ORDER BY SUM(t2.a) LIMIT 1);
1
1
1
1
SELECT 1 FROM t1 GROUP BY t1.a
HAVING (SELECT AVG(SUM(t1.b) + t2.b) FROM t2 ORDER BY SUM(t2.a) LIMIT 1);
1
1
1
1
SELECT 1 FROM t1 GROUP BY t1.a
HAVING (SELECT AVG(t1.b + t2.b) FROM t2 ORDER BY SUM(t2.a) LIMIT 1);
1
1
1
1
SELECT 1 FROM t1 GROUP BY t1.a
HAVING (SELECT AVG(SUM(t1.b) + 1) FROM t2 ORDER BY t2.a LIMIT 1);
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT 1 FROM t1 GROUP BY t1.a
HAVING (SELECT AVG(SUM(t1.b) + t2.b) FROM t2 ORDER BY t2.a LIMIT 1);
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT 1 FROM t1 GROUP BY t1.a
HAVING (SELECT AVG(t1.b + t2.b) FROM t2 ORDER BY t2.a LIMIT 1);
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
SELECT t1.a FROM t1
WHERE t1.a = (SELECT t2.a FROM t2 GROUP BY t2.a
ORDER BY SUM(t2.b), SUM(t1.b) LIMIT 1);
a
4
SELECT t1.a, SUM(t1.b) FROM t1
WHERE t1.a = (SELECT SUM(t2.b) FROM t2 GROUP BY t2.a
ORDER BY SUM(t2.b), SUM(t1.b) LIMIT 1)
GROUP BY t1.a;
a SUM(t1.b)
4 4
SELECT t1.a, SUM(t1.b) FROM t1
WHERE t1.a = (SELECT SUM(t2.b) FROM t2
ORDER BY SUM(t2.b) + SUM(t1.b) LIMIT 1)
GROUP BY t1.a;
a SUM(t1.b)
SELECT t1.a, SUM(t1.b) FROM t1
WHERE t1.a = (SELECT SUM(t2.b) FROM t2
ORDER BY SUM(t2.b + t1.a) LIMIT 1)
GROUP BY t1.a;
a SUM(t1.b)
SELECT t1.a FROM t1 GROUP BY t1.a
HAVING (1, 1) = (SELECT SUM(t1.a), t1.a FROM t2 LIMIT 1);
a
select avg (
(select
(select sum(outr.a + innr.a) from t1 as innr limit 1) as tt
from t1 as outr order by outr.a limit 1)) as m
from t1 as most_outer;
m
29.0000
select avg (
(select (
(select sum(outr.a + innr.a) from t1 as innr limit 1)) as tt
from t1 as outr order by count(outr.a) limit 1)) as tt
from t1 as most_outer;
ERROR 42000: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
select (select sum(outr.a + t1.a) from t1 limit 1) as tt from t1 as outr order by outr.a;
tt
29
29
35
35
35
41
SET sql_mode=@save_sql_mode;
DROP TABLE t1, t2;
#
# BUG#38072: Wrong result: HAVING not observed in a query with aggregate
#
CREATE TABLE t1 (
pk int(11) NOT NULL AUTO_INCREMENT,
int_nokey int(11) NOT NULL,
int_key int(11) NOT NULL,
varchar_key varchar(1) NOT NULL,
varchar_nokey varchar(1) NOT NULL,
PRIMARY KEY (pk),
KEY int_key (int_key),
KEY varchar_key (varchar_key)
);
INSERT INTO t1 VALUES
(1,5,5, 'h','h'),
(2,1,1, '{','{'),
(3,1,1, 'z','z'),
(4,8,8, 'x','x'),
(5,7,7, 'o','o'),
(6,3,3, 'p','p'),
(7,9,9, 'c','c'),
(8,0,0, 'k','k'),
(9,6,6, 't','t'),
(10,0,0,'c','c');
explain SELECT COUNT(varchar_key) AS X FROM t1 WHERE pk = 8 having 'foo'='bar';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
SELECT COUNT(varchar_key) AS X FROM t1 WHERE pk = 8 having 'foo'='bar';
X
drop table t1;
End of 5.0 tests
CREATE TABLE t1 (a INT, b INT,
PRIMARY KEY (a),
KEY i2(a,b));
INSERT INTO t1 VALUES (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8);
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 t1 SELECT a + 128,b FROM t1 limit 16;
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
EXPLAIN SELECT a FROM t1 WHERE a < 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,i2 PRIMARY 4 NULL 1 Using where; Using index
EXPLAIN SELECT a FROM t1 WHERE a < 2 ORDER BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,i2 PRIMARY 4 NULL 1 Using where; Using index
EXPLAIN SELECT a FROM t1 WHERE a < 2 GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY,i2 i2 4 NULL 1 Using where; Using index for group-by
EXPLAIN SELECT a FROM t1 IGNORE INDEX (PRIMARY,i2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 144
EXPLAIN SELECT a FROM t1 IGNORE INDEX FOR JOIN (PRIMARY,i2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 144
#
# For this explain, the query plan is weird: if we are using
# the primary key for reasons other than doing grouping, can't
# GROUP BY code take advantage of this? Well, currently it doesnt:
EXPLAIN SELECT a FROM t1 IGNORE INDEX FOR GROUP BY (PRIMARY,i2) GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 144 Using index; Using filesort
# Here's a proof it is really doing sorting:
flush status;
SELECT a FROM t1 IGNORE INDEX FOR GROUP BY (PRIMARY,i2) GROUP BY a;
show status like 'Sort_%';
Variable_name Value
Sort_merge_passes 0
Sort_priority_queue_sorts 0
Sort_range 0
Sort_rows 144
Sort_scan 1
# Proof ends.
#
# For this explain, the query plan is weird: if we are using
# the primary key for reasons other than doing sorting, can't
# ORDER BY code take advantage of this? Well, currently it doesnt:
EXPLAIN SELECT a FROM t1 IGNORE INDEX FOR ORDER BY (PRIMARY,i2) ORDER BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 144 Using index; Using filesort
# Here's a proof it is really doing sorting:
flush status;
SELECT a FROM t1 IGNORE INDEX FOR ORDER BY (PRIMARY,i2) ORDER BY a;
show status like 'Sort_%';
Variable_name Value
Sort_merge_passes 0
Sort_priority_queue_sorts 0
Sort_range 0
Sort_rows 144
Sort_scan 1
# Proof ends.
#
SELECT a FROM t1 IGNORE INDEX FOR ORDER BY (PRIMARY,i2) ORDER BY a;
a
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
EXPLAIN SELECT a FROM t1 IGNORE INDEX FOR ORDER BY (PRIMARY)
IGNORE INDEX FOR GROUP BY (i2) GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 144 Using index
EXPLAIN SELECT a FROM t1 IGNORE INDEX (PRIMARY) IGNORE INDEX FOR ORDER BY (i2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL i2 9 NULL 144 Using index
EXPLAIN SELECT a FROM t1 FORCE INDEX (i2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL i2 9 NULL 144 Using index
EXPLAIN SELECT a FROM t1 USE INDEX ();
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 144
EXPLAIN SELECT a FROM t1 USE INDEX () USE INDEX (i2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 144
EXPLAIN SELECT a FROM t1
FORCE INDEX (PRIMARY)
IGNORE INDEX FOR GROUP BY (i2)
IGNORE INDEX FOR ORDER BY (i2)
USE INDEX (i2);
ERROR HY000: Incorrect usage of USE INDEX and FORCE INDEX
EXPLAIN SELECT a FROM t1 USE INDEX (i2) USE INDEX ();
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL i2 9 NULL 144 Using index
EXPLAIN SELECT a FROM t1 FORCE INDEX ();
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 ')' at line 1
EXPLAIN SELECT a FROM t1 IGNORE INDEX ();
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 ')' at line 1
EXPLAIN SELECT a FROM t1 USE INDEX FOR JOIN (i2)
USE INDEX FOR GROUP BY (i2) GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 # NULL i2 # NULL # #
EXPLAIN SELECT a FROM t1 FORCE INDEX FOR JOIN (i2)
FORCE INDEX FOR GROUP BY (i2) GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL i2 9 NULL 144 Using index
EXPLAIN SELECT a FROM t1 USE INDEX () IGNORE INDEX (i2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 144
EXPLAIN SELECT a FROM t1 IGNORE INDEX (i2) USE INDEX ();
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 144
EXPLAIN SELECT a FROM t1
USE INDEX FOR GROUP BY (i2)
USE INDEX FOR ORDER BY (i2)
USE INDEX FOR JOIN (i2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL i2 9 NULL 144 Using index
EXPLAIN SELECT a FROM t1
USE INDEX FOR JOIN (i2)
USE INDEX FOR JOIN (i2)
USE INDEX FOR JOIN (i2,i2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL i2 9 NULL 144 Using index
SET @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='semijoin_with_cache=off';
EXPLAIN SELECT 1 FROM t1 WHERE a IN
(SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index PRIMARY,i2 PRIMARY 4 NULL 144 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 144
SET optimizer_switch=@save_optimizer_switch;
CREATE TABLE t2 (a INT, b INT, KEY(a));
INSERT INTO t2 VALUES (1, 1), (2, 2), (3,3), (4,4);
EXPLAIN SELECT a, SUM(b) FROM t2 GROUP BY a LIMIT 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL a 5 NULL 2
EXPLAIN SELECT a, SUM(b) FROM t2 IGNORE INDEX (a) GROUP BY a LIMIT 2;
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
SET @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='semijoin_with_cache=off';
EXPLAIN SELECT 1 FROM t2 WHERE a IN
(SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index a a 5 NULL 4 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
2 MATERIALIZED t1 ALL NULL NULL NULL NULL 144
SET optimizer_switch=@save_optimizer_switch;
DROP TABLE t1, t2;
CREATE TABLE t1(
a INT,
b INT NOT NULL,
c INT NOT NULL,
d INT,
UNIQUE KEY (c,b)
);
INSERT INTO t1 VALUES (1,1,1,50), (1,2,3,40), (2,1,3,4);
CREATE TABLE t2(
a INT,
b INT,
UNIQUE KEY(a,b)
);
INSERT INTO t2 VALUES (NULL, NULL), (NULL, NULL), (NULL, 1), (1, NULL), (1, 1), (1,2);
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 GROUP BY c,b,d;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
SELECT c,b,d FROM t1 GROUP BY c,b,d ORDER BY NULL;
c b d
1 1 50
3 2 40
3 1 4
EXPLAIN SELECT c,b,d FROM t1 ORDER BY c,b,d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 ORDER BY c,b,d;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b,d FROM t1 GROUP BY c,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using filesort
SELECT c,b,d FROM t1 GROUP BY c,b;
c b d
1 1 50
3 1 4
3 2 40
EXPLAIN SELECT c,b FROM t1 GROUP BY c,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL c 8 NULL 3 Using index
SELECT c,b FROM t1 GROUP BY c,b;
c b
1 1
3 1
3 2
EXPLAIN SELECT a,b from t2 ORDER BY a,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL a 10 NULL 6 Using index
SELECT a,b from t2 ORDER BY a,b;
a b
NULL NULL
NULL NULL
NULL 1
1 NULL
1 1
1 2
EXPLAIN SELECT a,b from t2 GROUP BY a,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL a 10 NULL 6 Using index
SELECT a,b from t2 GROUP BY a,b;
a b
NULL NULL
NULL 1
1 NULL
1 1
1 2
EXPLAIN SELECT a from t2 GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range NULL a 5 NULL 6 Using index for group-by
SELECT a from t2 GROUP BY a;
a
NULL
1
EXPLAIN SELECT b from t2 GROUP BY b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL a 10 NULL 6 Using index; Using temporary; Using filesort
SELECT b from t2 GROUP BY b;
b
NULL
1
2
insert into t2 SELECT NULL, NULL from seq_1_to_10;
EXPLAIN SELECT b from t2 GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range NULL a 5 NULL 9 Using index for group-by
# Expect: Using index for group-by
analyze table t2;
Table Op Msg_type Msg_text
test.t2 analyze status Engine-independent statistics collected
test.t2 analyze status OK
EXPLAIN SELECT b from t2 GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range NULL a 5 NULL 6 Using index for group-by
DROP TABLE t1;
DROP TABLE t2;
CREATE TABLE t1 ( a INT, b INT );
SELECT b c, (SELECT a FROM t1 WHERE b = c)
FROM t1;
c (SELECT a FROM t1 WHERE b = c)
SELECT b c, (SELECT a FROM t1 WHERE b = c)
FROM t1
HAVING b = 10;
c (SELECT a FROM t1 WHERE b = c)
SELECT MAX(b) c, (SELECT a FROM t1 WHERE b = c)
FROM t1
HAVING b = 10;
ERROR 42S22: Reference 'c' not supported (reference to group function)
SET @old_sql_mode = @@sql_mode;
SET @@sql_mode='ONLY_FULL_GROUP_BY';
SELECT b c, (SELECT a FROM t1 WHERE b = c)
FROM t1;
c (SELECT a FROM t1 WHERE b = c)
SELECT b c, (SELECT a FROM t1 WHERE b = c)
FROM t1
HAVING b = 10;
ERROR 42000: Non-grouping field 'b' is used in HAVING clause
SELECT MAX(b) c, (SELECT a FROM t1 WHERE b = c)
FROM t1
HAVING b = 10;
ERROR 42S22: Reference 'c' not supported (reference to group function)
INSERT INTO t1 VALUES (1, 1);
SELECT b c, (SELECT a FROM t1 WHERE b = c)
FROM t1;
c (SELECT a FROM t1 WHERE b = c)
1 1
INSERT INTO t1 VALUES (2, 1);
SELECT b c, (SELECT a FROM t1 WHERE b = c)
FROM t1;
ERROR 21000: Subquery returns more than 1 row
DROP TABLE t1;
SET @@sql_mode = @old_sql_mode;
SET @old_sql_mode = @@sql_mode;
SET @@sql_mode='ONLY_FULL_GROUP_BY';
CREATE TABLE t1(i INT);
INSERT INTO t1 VALUES (1), (10);
SELECT COUNT(i) FROM t1;
COUNT(i)
2
SELECT COUNT(i) FROM t1 WHERE i > 1;
COUNT(i)
1
DROP TABLE t1;
SET @@sql_mode = @old_sql_mode;
#
# Bug #45640: optimizer bug produces wrong results
#
CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1 VALUES (4, 40), (1, 10), (2, 20), (2, 20), (3, 30);
# should return 4 ordered records:
SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) FROM t1 GROUP BY aa;
aa COUNT(DISTINCT b)
1 1
2 1
3 1
4 1
SELECT (SELECT (SELECT t1.a)) aa, COUNT(DISTINCT b) FROM t1 GROUP BY aa;
aa COUNT(DISTINCT b)
1 1
2 1
3 1
4 1
SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) FROM t1 GROUP BY aa+0;
aa COUNT(DISTINCT b)
1 1
2 1
3 1
4 1
# should return the same result in a reverse order:
SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) FROM t1 GROUP BY -aa;
aa COUNT(DISTINCT b)
4 1
3 1
2 1
1 1
# execution plan should not use temporary table:
EXPLAIN EXTENDED
SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) FROM t1 GROUP BY aa+0;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using filesort
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1003 /* select#1 */ select <expr_cache><`test`.`t1`.`a`>((/* select#2 */ select `test`.`t1`.`a`)) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by <expr_cache><`test`.`t1`.`a`>((/* select#2 */ select `test`.`t1`.`a`)) + 0
EXPLAIN EXTENDED
SELECT (SELECT t1.a) aa, COUNT(DISTINCT b) FROM t1 GROUP BY -aa;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5 100.00 Using filesort
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1276 Field or reference 'test.t1.a' of SELECT #2 was resolved in SELECT #1
Note 1003 /* select#1 */ select <expr_cache><`test`.`t1`.`a`>((/* select#2 */ select `test`.`t1`.`a`)) AS `aa`,count(distinct `test`.`t1`.`b`) AS `COUNT(DISTINCT b)` from `test`.`t1` group by -<expr_cache><`test`.`t1`.`a`>((/* select#2 */ select `test`.`t1`.`a`))
# should return only one record
SELECT (SELECT tt.a FROM t1 tt LIMIT 1) aa, COUNT(DISTINCT b) FROM t1
GROUP BY aa;
aa COUNT(DISTINCT b)
4 4
CREATE TABLE t2 SELECT DISTINCT a FROM t1;
# originally reported queries (1st two columns of next two query
# results should be same):
SELECT (SELECT t2.a FROM t2 WHERE t2.a = t1.a) aa, b, COUNT(DISTINCT b)
FROM t1 GROUP BY aa, b;
aa b COUNT(DISTINCT b)
1 10 1
2 20 1
3 30 1
4 40 1
SELECT (SELECT t2.a FROM t2 WHERE t2.a = t1.a) aa, b, COUNT( b)
FROM t1 GROUP BY aa, b;
aa b COUNT( b)
1 10 1
2 20 2
3 30 1
4 40 1
# ORDER BY for sure:
SELECT (SELECT t2.a FROM t2 WHERE t2.a = t1.a) aa, b, COUNT(DISTINCT b)
FROM t1 GROUP BY aa, b ORDER BY -aa, -b;
aa b COUNT(DISTINCT b)
4 40 1
3 30 1
2 20 1
1 10 1
SELECT (SELECT t2.a FROM t2 WHERE t2.a = t1.a) aa, b, COUNT( b)
FROM t1 GROUP BY aa, b ORDER BY -aa, -b;
aa b COUNT( b)
4 40 1
3 30 1
2 20 2
1 10 1
DROP TABLE t1, t2;
#
# Bug#52051: Aggregate functions incorrectly returns NULL from outer
# join query
#
CREATE TABLE t1 (a INT PRIMARY KEY);
CREATE TABLE t2 (a INT PRIMARY KEY);
INSERT INTO t2 VALUES (1), (2);
EXPLAIN SELECT MIN(t2.a) FROM t2 LEFT JOIN t1 ON t2.a = t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
SELECT MIN(t2.a) FROM t2 LEFT JOIN t1 ON t2.a = t1.a;
MIN(t2.a)
1
EXPLAIN SELECT MAX(t2.a) FROM t2 LEFT JOIN t1 ON t2.a = t1.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
SELECT MAX(t2.a) FROM t2 LEFT JOIN t1 ON t2.a = t1.a;
MAX(t2.a)
2
DROP TABLE t1, t2;
CREATE TABLE t1 (a int(11) NOT NULL);
INSERT INTO t1 VALUES (1),(2);
CREATE TABLE t2 (
key_col int(11) NOT NULL,
KEY (key_col)
);
INSERT INTO t2 VALUES (1),(2);
select min(t2.key_col) from t1,t2 where t1.a=1;
min(t2.key_col)
1
select min(t2.key_col) from t1,t2 where t1.a > 1000;
min(t2.key_col)
NULL
select min(t2.key_col)+1 from t1,t2 where t1.a> 1000;
min(t2.key_col)+1
NULL
drop table t1,t2;
#
# Bug#55188: GROUP BY, GROUP_CONCAT and TEXT - inconsistent results
#
CREATE TABLE t1 (a text, b varchar(10));
INSERT INTO t1 VALUES (repeat('1', 1300),'one'), (repeat('1', 1300),'two');
EXPLAIN
SELECT SUBSTRING(a,1,10), LENGTH(a), GROUP_CONCAT(b) FROM t1 GROUP BY a;
id 1
select_type SIMPLE
table t1
type ALL
possible_keys NULL
key NULL
key_len NULL
ref NULL
rows 2
Extra Using filesort
SELECT SUBSTRING(a,1,10), LENGTH(a), GROUP_CONCAT(b) FROM t1 GROUP BY a;
SUBSTRING(a,1,10) LENGTH(a) GROUP_CONCAT(b)
1111111111 1300 one,two
Warnings:
Warning 4202 2 values were longer than max_sort_length. Sorting used only the first 1024 bytes
EXPLAIN
SELECT SUBSTRING(a,1,10), LENGTH(a) FROM t1 GROUP BY a;
id 1
select_type SIMPLE
table t1
type ALL
possible_keys NULL
key NULL
key_len NULL
ref NULL
rows 2
Extra Using temporary; Using filesort
SELECT SUBSTRING(a,1,10), LENGTH(a) FROM t1 GROUP BY a;
SUBSTRING(a,1,10) LENGTH(a)
1111111111 1300
Warnings:
Warning 4202 1 values were longer than max_sort_length. Sorting used only the first 1024 bytes
DROP TABLE t1;
#
# Bug#57688 Assertion `!table || (!table->write_set || bitmap_is_set(table->write_set, field
#
CREATE TABLE t1(f1 INT NOT NULL);
INSERT INTO t1 VALUES (16777214),(0);
SELECT COUNT(*) FROM t1 LEFT JOIN t1 t2
ON 1 WHERE t2.f1 > 1 GROUP BY t2.f1;
COUNT(*)
2
DROP TABLE t1;
#
# Bug#59839: Aggregation followed by subquery yields wrong result
#
CREATE TABLE t1 (
a INT,
b INT,
c INT,
KEY (a, b)
);
INSERT INTO t1 VALUES
( 1, 1, 1 ),
( 1, 2, 2 ),
( 1, 3, 3 ),
( 1, 4, 6 ),
( 1, 5, 5 ),
( 1, 9, 13 ),
( 2, 1, 6 ),
( 2, 2, 7 ),
( 2, 3, 8 );
EXPLAIN
SELECT a, AVG(t1.b),
(SELECT t11.c FROM t1 t11 WHERE t11.a = t1.a AND t11.b = AVG(t1.b)) AS t11c,
(SELECT t12.c FROM t1 t12 WHERE t12.a = t1.a AND t12.b = AVG(t1.b)) AS t12c
FROM t1 GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL a 10 NULL 9 Using index
3 DEPENDENT SUBQUERY t12 ref a a 10 func,func 1 Using index condition
2 DEPENDENT SUBQUERY t11 ref a a 10 func,func 1 Using index condition
SELECT a, AVG(t1.b),
(SELECT t11.c FROM t1 t11 WHERE t11.a = t1.a AND t11.b = AVG(t1.b)) AS t11c,
(SELECT t12.c FROM t1 t12 WHERE t12.a = t1.a AND t12.b = AVG(t1.b)) AS t12c
FROM t1 GROUP BY a;
a AVG(t1.b) t11c t12c
1 4.0000 6 6
2 2.0000 7 7
DROP TABLE t1;
#
# Bug#11765254 (58200): Assertion failed: param.sort_length when grouping
# by functions
#
set tmp_memory_table_size=0;
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (0),(0);
SELECT 1 FROM t1 GROUP BY IF(`a`,'','');
1
1
SELECT 1 FROM t1 GROUP BY TRIM(LEADING RAND() FROM '');
1
1
SELECT 1 FROM t1 GROUP BY SUBSTRING('',SLEEP(0),'');
1
1
Warnings:
Warning 1292 Truncated incorrect INTEGER value: ''
Warning 1292 Truncated incorrect INTEGER value: ''
Warning 1292 Truncated incorrect INTEGER value: ''
SELECT 1 FROM t1 GROUP BY SUBSTRING(SYSDATE() FROM 'K' FOR 'jxW<');
1
1
Warnings:
Warning 1292 Truncated incorrect INTEGER value: 'K'
Warning 1292 Truncated incorrect INTEGER value: 'jxW<'
Warning 1292 Truncated incorrect INTEGER value: 'K'
Warning 1292 Truncated incorrect INTEGER value: 'jxW<'
Warning 1292 Truncated incorrect INTEGER value: 'K'
Warning 1292 Truncated incorrect INTEGER value: 'jxW<'
DROP TABLE t1;
set tmp_memory_table_size=default;
#
# MDEV-641 LP:1002108 - Wrong result (or crash) from a query with duplicated field in the group list and a limit clause
# Bug#11761078: 53534: INCORRECT 'SELECT SQL_BIG_RESULT...'
# WITH GROUP BY ON DUPLICATED FIELDS
#
CREATE TABLE t1(
col1 int,
UNIQUE INDEX idx (col1));
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),
(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);
EXPLAIN SELECT col1 AS field1, col1 AS field2
FROM t1 GROUP BY field1, field2;;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL idx 5 NULL 20 Using index
FLUSH STATUS;
SELECT col1 AS field1, col1 AS field2
FROM t1 GROUP BY field1, field2;;
field1 field2
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
SHOW SESSION STATUS LIKE 'Sort_scan%';
Variable_name Value
Sort_scan 0
EXPLAIN SELECT SQL_BIG_RESULT col1 AS field1, col1 AS field2
FROM t1 GROUP BY field1, field2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL idx 5 NULL 20 Using index; Using filesort
FLUSH STATUS;
SELECT SQL_BIG_RESULT col1 AS field1, col1 AS field2
FROM t1 GROUP BY field1, field2;
field1 field2
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
SHOW SESSION STATUS LIKE 'Sort_scan%';
Variable_name Value
Sort_scan 1
CREATE VIEW v1 AS SELECT * FROM t1;
SELECT SQL_BIG_RESULT col1 AS field1, col1 AS field2
FROM v1
GROUP BY field1, field2;
field1 field2
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
SELECT SQL_BIG_RESULT tbl1.col1 AS field1, tbl2.col1 AS field2
FROM t1 as tbl1, t1 as tbl2
GROUP BY field1, field2
LIMIT 3;
field1 field2
1 1
1 2
1 3
explain
select col1 f1, col1 f2 from t1 order by f2, f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL idx 5 NULL 20 Using index
explain
select col1 f1, col1 f2 from t1 order by f2, f1+0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL idx 5 NULL 20 Using index; Using filesort
select col1 f1, col1 f2 from t1 order by f2, f1+0;
f1 f2
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
explain
select col1 f1, col1 f2 from t1 group by f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL idx 5 NULL 20 Using index
select col1 f1, col1 f2 from t1 group by f1;
f1 f2
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
explain
select col1 f1, col1 f2 from t1 group by f1, f2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL idx 5 NULL 20 Using index
select col1 f1, col1 f2 from t1 group by f1, f2;
f1 f2
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
explain
select col1 f1, col1 f2 from t1 group by f2 order by f2, f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL idx 5 NULL 20 Using index
select col1 f1, col1 f2 from t1 group by f2 order by f2, f1;
f1 f2
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
explain
select col1 f1, col1 f2 from t1 group by f1, f2 order by f2, f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL idx 5 NULL 20 Using index
select col1 f1, col1 f2 from t1 group by f1, f2 order by f2, f1;
f1 f2
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
18 18
19 19
20 20
CREATE TABLE t2(
col1 int,
col2 int,
UNIQUE INDEX idx (col1, col2));
INSERT INTO t2(col1, col2) VALUES
(1,20),(2,19),(3,18),(4,17),(5,16),(6,15),(7,14),(8,13),(9,12),(10,11),
(11,10),(12,9),(13,8),(14,7),(15,6),(16,5),(17,4),(18,3),(19,2),(20,1);
explain
select col1 f1, col2 f2, col1 f3 from t2 group by f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range NULL idx 5 NULL 7 Using index for group-by
explain
select SQL_BIG_RESULT col1 f1, col2 f2, col1 f3 from t2 group by f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range NULL idx 5 NULL 7 Using index for group-by
explain
select col1 f1, col2 f2, col1 f3 from t2 group by f1, f2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL idx 10 NULL 20 Using index
explain
select col1 f1, col1 f2 from t2 group by f1, 1+1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range NULL idx 5 NULL 7 Using index for group-by
explain
select col1 f1, col2 f2, col1 f3 from t2 group by f1, f2, f3+0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL idx 10 NULL 20 Using index; Using temporary; Using filesort
select col1 f1, col2 f2, col1 f3 from t2 group by f1, f2, f3+0;
f1 f2 f3
1 20 1
2 19 2
3 18 3
4 17 4
5 16 5
6 15 6
7 14 7
8 13 8
9 12 9
10 11 10
11 10 11
12 9 12
13 8 13
14 7 14
15 6 15
16 5 16
17 4 17
18 3 18
19 2 19
20 1 20
explain
select col1 f1, col2 f2, col1 f3 from t2 order by f1,f2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL idx 10 NULL 20 Using index
explain
select col1 f1, col2 f2, col1 f3 from t2 order by f1, f2, f3+0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL idx 10 NULL 20 Using index; Using filesort
select col1 f1, col2 f2, col1 f3 from t2 order by f1, f2, f3+0;
f1 f2 f3
1 20 1
2 19 2
3 18 3
4 17 4
5 16 5
6 15 6
7 14 7
8 13 8
9 12 9
10 11 10
11 10 11
12 9 12
13 8 13
14 7 14
15 6 15
16 5 16
17 4 17
18 3 18
19 2 19
20 1 20
DROP VIEW v1;
DROP TABLE t1, t2;
# End of 5.1 tests
#
# LP bug#694450 Wrong result with non-standard GROUP BY + ORDER BY
#
SET SESSION SQL_MODE='ONLY_FULL_GROUP_BY';
CREATE TABLE t1 (
f1 int(11), f2 int(11), f3 datetime, f4 varchar(1), PRIMARY KEY (f1)) ;
INSERT IGNORE INTO t1 VALUES ('1','9','2004-10-11 18:13','x'),('2','5','2004-03-07 14:02','g'),('3','1','2004-04-09 09:38','o'),('4','0','1900-01-01 00:00','g'),('5','1','2009-02-19 02:05','v');
SELECT alias2.f3 AS field1 , alias2.f1 AS field2 FROM t1 AS alias1 JOIN t1 AS alias2 ON alias2.f1 = alias1.f2 AND alias2.f1 != alias1.f4 GROUP BY field1 , field2 ORDER BY alias1.f2 , field2;
field1 field2
2004-10-11 18:13:00 1
2009-02-19 02:05:00 5
Warnings:
Warning 1292 Truncated incorrect DECIMAL value: 'g'
Warning 1292 Truncated incorrect DECIMAL value: 'o'
Warning 1292 Truncated incorrect DECIMAL value: 'v'
SELECT alias2.f3 AS field1 , alias2.f1 AS field2 FROM t1 AS alias1 JOIN t1 AS alias2 ON alias2.f1 = alias1.f2 AND alias2.f1 != alias1.f4 GROUP BY field1 , field2 ;
field1 field2
2004-10-11 18:13:00 1
2009-02-19 02:05:00 5
Warnings:
Warning 1292 Truncated incorrect DECIMAL value: 'g'
Warning 1292 Truncated incorrect DECIMAL value: 'o'
Warning 1292 Truncated incorrect DECIMAL value: 'v'
SET SESSION SQL_MODE=default;
drop table t1;
#
# LP bug#967242 Wrong result (extra rows, not grouped) with JOIN, AND in ON condition, multi-part key, GROUP BY, OR in WHERE
#
CREATE TABLE t1 ( a VARCHAR(1) ) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('x');
CREATE TABLE t2 ( b INT, c VARCHAR(1), KEY (c, b) ) ENGINE=MyISAM;
INSERT INTO t2 VALUES
(4, 'd'),(8, 'g'),(3, 'x'),(3, 'f'),
(0, 'p'),(3, 'j'),(8, 'c');
SELECT t2_1.b as zzz
FROM t1 JOIN t2 AS t2_1 JOIN t2 AS t2_2
ON (t2_2.b = t2_1.b ) AND (t2_2.c = t2_1.c )
WHERE
rand() + 1 > 0 OR
a = t2_1.c
GROUP BY zzz;
zzz
0
3
4
8
SELECT t2_1.b as zzz
FROM t1 JOIN t2 AS t2_1 JOIN t2 AS t2_2
ON (t2_2.b = t2_1.b ) AND (t2_2.c = t2_1.c )
WHERE
1 > 0 OR
a = t2_1.c
GROUP BY zzz;
zzz
0
3
4
8
SELECT t2_1.b as zzz
FROM t1 JOIN t2 AS t2_1 JOIN t2 AS t2_2
ON (t2_2.b = t2_1.b ) AND (t2_2.c = t2_1.c )
WHERE
t2_1.b + 1 > 0 OR
a = t2_1.c
GROUP BY zzz;
zzz
0
3
4
8
SET @save_optimizer_switch967242=@@optimizer_switch;
SET optimizer_switch = 'in_to_exists=on';
SELECT t2_1.b
FROM t1 JOIN t2 AS t2_1 JOIN t2 AS t2_2
ON (t2_2.b = t2_1.b ) AND (t2_2.c = t2_1.c )
WHERE
( SELECT COUNT(*) FROM t2 ) IS NOT NULL
OR a = t2_1.c
GROUP BY t2_1.b;
b
0
3
4
8
SET optimizer_switch=@save_optimizer_switch967242;
drop table t1, t2;
#
# Bug#12578908: SELECT SQL_BUFFER_RESULT OUTPUTS TOO MANY
# ROWS WHEN GROUP IS OPTIMIZED AWAY
#
CREATE TABLE t1 (col1 int, col2 int) ;
INSERT INTO t1 VALUES (10,1),(11,7);
CREATE TABLE t2 (col1 int, col2 int) ;
INSERT INTO t2 VALUES (10,8);
EXPLAIN SELECT SQL_BUFFER_RESULT t2.col2 FROM t2 JOIN t1 ON t1.col1 GROUP BY t2.col2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 system NULL NULL NULL NULL 1 Using temporary
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
SELECT SQL_BUFFER_RESULT t2.col2 FROM t2 JOIN t1 ON t1.col1 GROUP BY t2.col2;
col2
8
EXPLAIN SELECT t2.col2 FROM t2 JOIN t1 ON t1.col1 GROUP BY t2.col2;
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 ALL NULL NULL NULL NULL 2 Using where
SELECT t2.col2 FROM t2 JOIN t1 ON t1.col1 GROUP BY t2.col2;
col2
8
DROP TABLE t1,t2;
#
# BUG#12640437: USING SQL_BUFFER_RESULT RESULTS IN A
# DIFFERENT QUERY OUTPUT
#
CREATE TABLE t1 (
a int,
b varchar(1),
KEY (b,a)
) CHARSET=latin1;
INSERT INTO t1 VALUES
(1,NULL),(0,'a'),(1,NULL),(0,'a'), (1,'a'),(0,'a'),(2,'a'),(1,'a');
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
EXPLAIN SELECT SQL_BUFFER_RESULT MIN(a), b FROM t1 WHERE t1.b = 'a' GROUP BY b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range b b 9 NULL 1 Using where; Using index for group-by; Using temporary
SELECT SQL_BUFFER_RESULT MIN(a), b FROM t1 WHERE t1.b = 'a' GROUP BY b;
MIN(a) b
0 a
EXPLAIN SELECT MIN(a), b FROM t1 WHERE t1.b = 'a' GROUP BY b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range b b 9 NULL 1 Using where; Using index for group-by
SELECT MIN(a), b FROM t1 WHERE t1.b = 'a' GROUP BY b;
MIN(a) b
0 a
DROP TABLE t1;
create table t1 (a int, b int);
insert into t1 values (1,11), (1,12), (2,22),(2,23), (4,44),(4,45);
create table t2 (c int, d int);
insert into t2 values (1,11), (2,22), (4,44);
select distinct a,sum(b), (select d from t2 where c=a order by max(b) limit 1) from t1 group by a order by max(b);
a sum(b) (select d from t2 where c=a order by max(b) limit 1)
1 23 11
2 45 22
4 89 44
drop table t1, t2;
#
# LP bug#993726 Wrong result from a query with ALL subquery predicate in WHERE
#
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (0);
SELECT 1 FROM t1 WHERE 1 > ALL(SELECT 1 FROM t1 WHERE a!=0);
1
1
SELECT max(1) FROM t1 WHERE a!=0;
max(1)
NULL
drop table t1;
# End of 5.2 tests
#
# lp:872702: Crash in add_ref_to_table_cond() when grouping by a PK
#
CREATE TABLE t1 (a int, PRIMARY KEY (a)) ;
INSERT INTO t1 VALUES (14),(15),(16),(17),(18),(19),(20);
CREATE TABLE t2 (a int) ;
SELECT a
FROM t1
WHERE a = (
SELECT t2.a
FROM t2
) OR t1.a = 73
GROUP BY 1;
a
DROP TABLE t1, t2;
FLUSH STATUS;
CREATE TABLE t1 (f1 INT, f2 decimal(20,1), f3 blob);
INSERT INTO t1 values(11,NULL,'blob'),(11,NULL,'blob');
SELECT f3, MIN(f2) FROM t1 GROUP BY f1 LIMIT 1;
f3 MIN(f2)
blob NULL
DROP TABLE t1;
the value below *must* be 1
show status like 'Created_tmp_disk_tables';
Variable_name Value
Created_tmp_disk_tables 1
#
# Bug #1002146: Unneeded filesort if usage of join buffer is not allowed
# (bug mdev-645)
#
CREATE TABLE t1 (pk int PRIMARY KEY, a int, INDEX idx(a));
INSERT INTO t1 VALUES (3,2), (2,3), (5,3), (6,4);
CREATE TABLE t2 (pk int PRIMARY KEY, a int, INDEX idx(a));
INSERT INTO t2 VALUES (9,0), (10,3), (6,4), (1,6), (3,100), (5,200);
set join_cache_level=0;
EXPLAIN
SELECT t2.a FROM t2 STRAIGHT_JOIN t1 ON t2.a <> 0 WHERE t2.a <> 6
GROUP BY t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range idx idx 5 NULL 5 Using where; Using index
1 SIMPLE t1 index NULL PRIMARY 4 NULL 4 Using index
SELECT t2.a FROM t2 STRAIGHT_JOIN t1 ON t2.a <> 0 WHERE t2.a <> 6
GROUP BY t2.a;
a
3
4
100
200
set join_cache_level=default;
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='outer_join_with_cache=off';
EXPLAIN
SELECT t2.a FROM t2 LEFT JOIN t1 ON t2.a <> 0 WHERE t2.a <> 6
GROUP BY t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range idx idx 5 NULL 5 Using where; Using index
1 SIMPLE t1 index NULL PRIMARY 4 NULL 4 Using where; Using index
SELECT t2.a FROM t2 LEFT JOIN t1 ON t2.a <> 0 WHERE t2.a <> 6
GROUP BY t2.a;
a
0
3
4
100
200
set optimizer_switch=@save_optimizer_switch;
DROP TABLE t1,t2;
#
# MDEV-5104 crash in Item_field::used_tables with broken order by
#
(select 1 order by x(y)) order by 1;
ERROR 42S22: Unknown column 'y' in 'order clause'
# End of 5.3 tests
#
# Bug#49771: Incorrect MIN (date) when minimum value is 0000-00-00
#
CREATE TABLE t1 (f1 int, f2 DATE);
INSERT INTO t1 VALUES (1,'2004-04-19'), (1,'0000-00-00'), (1,'2004-04-18'),
(2,'2004-05-19'), (2,'0001-01-01'), (3,'2004-04-10');
SELECT MIN(f2),MAX(f2) FROM t1;
MIN(f2) MAX(f2)
0000-00-00 2004-05-19
SELECT f1,MIN(f2),MAX(f2) FROM t1 GROUP BY 1;
f1 MIN(f2) MAX(f2)
1 0000-00-00 2004-04-19
2 0001-01-01 2004-05-19
3 2004-04-10 2004-04-10
DROP TABLE t1;
CREATE TABLE t1 ( f1 int, f2 time);
INSERT INTO t1 VALUES (1,'01:27:35'), (1,'06:11:01'), (2,'19:53:05'),
(2,'21:44:25'), (3,'10:55:12'), (3,'05:45:11'), (4,'00:25:00');
SELECT MIN(f2),MAX(f2) FROM t1;
MIN(f2) MAX(f2)
00:25:00 21:44:25
SELECT f1,MIN(f2),MAX(f2) FROM t1 GROUP BY 1;
f1 MIN(f2) MAX(f2)
1 01:27:35 06:11:01
2 19:53:05 21:44:25
3 05:45:11 10:55:12
4 00:25:00 00:25:00
DROP TABLE t1;
#End of test#49771
#
# Test of bug in GROUP_CONCAT with ROLLUP
#
CREATE TABLE t1 ( b VARCHAR(8) NOT NULL, a INT NOT NULL ) ENGINE=MyISAM;
INSERT INTO t1 (a,b) VALUES (1,'c'),(2,'v');
CREATE TABLE t2 ( c VARCHAR(8), d INT, KEY (c, d) ) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('v',6),('c',4),('v',3);
SELECT b, GROUP_CONCAT( a, b ORDER BY a, b )
FROM t1 JOIN t2 ON c = b GROUP BY b;
b GROUP_CONCAT( a, b ORDER BY a, b )
c 1c
v 2v,2v
SELECT b, GROUP_CONCAT( a, b ORDER BY a, b )
FROM t1 JOIN t2 ON c = b GROUP BY b WITH ROLLUP;
b GROUP_CONCAT( a, b ORDER BY a, b )
c 1c
v 2v,2v
NULL 1c,2v,2v
DROP TABLE t1,t2;
#
# MDEV-24855 ER_CRASHED_ON_USAGE or Assertion `length <= column->length'
# failed in ma_blockrec.c
#
CREATE TABLE t1 (a BIT(5), c BINARY(179));
INSERT INTO t1 VALUES (b'1100','foo'),(b'0','bar');
SELECT c, GROUP_CONCAT(CASE NULL WHEN 0 THEN a END, CASE 'foo' WHEN c THEN 1 END) AS f FROM t1 GROUP BY ExtractValue('<a></a>', '/a'), UUID();
DROP TABLE t1;
#
# MDEV-6129: Server crashes during UNION with ORDER BY field IS NULL
#
SET sql_mode='ONLY_FULL_GROUP_BY';
SELECT 1 AS test UNION SELECT 2 AS test ORDER BY test IS NULL ASC;
test
1
2
SET sql_mode='';
#
# MDEV-6484: Assertion `tab->ref.use_count' failed on query with joins, constant table, multi-part key
#
CREATE TABLE t1 (i1 INT, c1 VARCHAR(1)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (6,'b');
CREATE TABLE t2 (pk2 INT, i2 INT, c2 VARCHAR(1), PRIMARY KEY(pk2), KEY(pk2,i2)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,2,'s'),(2,4,'r'),(3,8,'m'),(4,4,'b'),(5,4,'x'),(6,7,'g'),(7,4,'p');
SELECT i2 FROM t1 AS t1a STRAIGHT_JOIN ( t2 INNER JOIN t1 AS t1b ON (t1b.c1 = c2) ) ON (t1b.i1 = pk2 )
WHERE t1a.c1 = c2 GROUP BY i2;
i2
DROP TABLE t1,t2;
#
# MDEV-6855
# MIN(*) with subqueries with IS NOT NULL in WHERE clause crashed.
#
CREATE TABLE t1 (i INT, c VARCHAR(3), KEY(c,i)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (7,'foo'),(0,'bar');
CREATE TABLE t2 (j INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (0),(8),(1),(8),(9);
SELECT MAX(i), c FROM t1
WHERE c != 'qux' AND ( SELECT SUM(j) FROM t1, t2 ) IS NOT NULL GROUP BY c;
MAX(i) c
0 bar
7 foo
drop table t1,t2;
#
# ONLY_FULL_GROUP_BY references
#
set @save_sql_mode = @@sql_mode;
set sql_mode='ONLY_FULL_GROUP_BY';
create table t1 (a int, b int);
select a+b as x from t1 group by x having x > 1;
x
select a as x from t1 group by x having x > 1;
x
select a from t1 group by a having a > 1;
a
drop table t1;
set sql_mode= @save_sql_mode;
create table t1 (f1 int);
insert into t1 values (5),(9);
create table t2 (f2 int);
insert into t2 values (0),(6);
create table t3 (f3 int);
insert into t3 values (6),(3);
create table t4 (f4 int);
insert into t4 values (1),(0);
select
(select min(f1) from t1 where f1 in (select min(f4) from t2)) as field7,
(select count(*) from t3 where f3 in (select max(f4) from t2 group by field7))
from t4;
ERROR 42S22: Reference 'field7' not supported (reference to group function)
drop table t1, t2, t3, t4;
create table t1 (i1 int);
insert into t1 values (1);
create table t2 (i int);
insert into t2 values (2);
select 1 from t1 left join t2 b on b.i = (select max(b.i) from t2);
1
1
drop table t1, t2;
create table t1 (c1 int, c2 int);
create table t2 (c1 int, c2 int);
select t1.c1 as c1, t2.c2 as c1 from t1, t2 where t1.c1 < 20 and t2.c2 > 5 group by t1.c1, t2.c2 having t1.c1 < 3;
c1 c1
drop table t1, t2;
SET @old_sort_buff_size = @@sort_buffer_size;
SET @@sort_buffer_size=256*1024;
CREATE TABLE t1 (c INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES
(2011),(1977),(1982),(2027),(2023),(NULL),(NULL),(2004),(1974),(2032),
(1993),(NULL),(1995),(2034),(NULL),(2009),(1900),(NULL),(2025),(1900),
(2033),(1900),(2012),(NULL),(2009),(1992),(1974),(1974),(2012),(2028),
(2007),(2012),(1900),(1983),(1900),(2010),(1987),(1994),(1981),(2032),
(2010),(1989),(2014),(1900),(1900),(1976),(1978),(2007),(2030),(NULL),
(2002),(1997),(1900),(NULL),(2000),(2027),(1975),(2026),(1975),(2026),
(2029),(1977),(1900),(1900),(2031),(1993),(1986),(2012),(1979),(2013),
(1994),(2014),(2025),(2006),(1971),(1974),(2021),(2011),(NULL),(1991),
(2001),(1977),(2023),(2012),(1900),(1978),(1998),(NULL),(1988),(1999),
(2017),(2008),(1976),(1900),(2005),(2030),(2023),(1900),(1978),(1990),
(1978),(1987),(2030),(1900),(2034),(2006),(2015),(2001),(2019),(2024),
(2030),(1989),(1997),(2007),(2023),(1994),(1971),(2011),(2011),(2015),
(1984),(1978),(1979),(1989),(2008),(2030);
SELECT ExtractValue('<a></a>','/a') AS f1, SPACE(c) AS f2 FROM t1 GROUP BY f1, f2 WITH ROLLUP;
f1 f2
NULL
NULL
NULL NULL
Warnings:
Warning 4202 116 values were longer than max_sort_length. Sorting used only the first 1024 bytes
SET @@sort_buffer_size = @old_sort_buff_size;
DROP TABLE t1;
#
# Bug #58782
# Missing rows with SELECT .. WHERE .. IN subquery
# with full GROUP BY and no aggr
#
CREATE TABLE t1 (
pk INT NOT NULL,
col_int_nokey INT,
PRIMARY KEY (pk)
);
INSERT INTO t1 VALUES (10,7);
INSERT INTO t1 VALUES (11,1);
INSERT INTO t1 VALUES (12,5);
INSERT INTO t1 VALUES (13,3);
SELECT pk AS field1, col_int_nokey AS field2
FROM t1
WHERE col_int_nokey > 0
GROUP BY field1, field2;
field1 field2
10 7
11 1
12 5
13 3
CREATE TABLE where_subselect
SELECT pk AS field1, col_int_nokey AS field2
FROM t1
WHERE col_int_nokey > 0
GROUP BY field1, field2
;
SELECT *
FROM where_subselect
WHERE (field1, field2) IN (
SELECT pk AS field1, col_int_nokey AS field2
FROM t1
WHERE col_int_nokey > 0
GROUP BY field1, field2
);
field1 field2
10 7
11 1
12 5
13 3
DROP TABLE t1;
DROP TABLE where_subselect;
# End of Bug #58782
#
# MDEV-8988: Apparently valid SQL query gives wrong result (nested WHERE)
#
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (a int, b int, c int);
insert into t1 select A.a + 10*B.a, A.a, A.a + 10*B.a from t0 A, t0 B;
insert into t1 values (NULL, NULL, NULL);
create table t2 (c int, col1 int, key(c));
insert into t2 select t1.a, 100000 from t1;
analyze table t2;
Table Op Msg_type Msg_text
test.t2 analyze status Engine-independent statistics collected
test.t2 analyze status Table is already up to date
explain
select
max(a)+ (select col1 from t2 where t2.c=t1.c)
from t1
group by t1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 101 Using temporary; Using filesort
2 DEPENDENT SUBQUERY t2 ref c c 5 func 1
select
max(a) + (select col1 from t2 where t2.c=t1.c)
from t1
group by t1.b;
max(a) + (select col1 from t2 where t2.c=t1.c)
NULL
100090
100091
100092
100093
100094
100095
100096
100097
100098
100099
drop table t0,t1,t2;
#
# MDEV-9602 crash in st_key::actual_rec_per_key when group by constant
#
create table t1 (a date not null,unique (a)) engine=innodb;
Warnings:
Warning 1286 Unknown storage engine 'innodb'
Warning 1266 Using storage engine MyISAM for table 't1'
select distinct a from t1 group by 'a';
a
insert into t1 values("2001-02-02"),("2001-02-03");
select distinct a from t1 group by 'a';
a
2001-02-02
drop table t1;
#
# MDEV-10324: Server crash in get_sel_arg_for_keypart or Assertion `n < size()' failed in Mem_root_array
#
CREATE TABLE t1 (
job_id int(10) unsigned NOT NULL AUTO_INCREMENT,
job_cmd varbinary(60) NOT NULL DEFAULT '',
job_namespace int(11) NOT NULL,
job_title varbinary(255) NOT NULL,
job_params blob NOT NULL,
job_timestamp varbinary(14) DEFAULT NULL,
job_random int(10) unsigned NOT NULL DEFAULT '0',
job_token varbinary(32) NOT NULL DEFAULT '',
job_token_timestamp varbinary(14) DEFAULT NULL,
job_sha1 varbinary(32) NOT NULL DEFAULT '',
job_attempts int(10) unsigned NOT NULL DEFAULT '0',
PRIMARY KEY (job_id),
KEY job_cmd (job_cmd,job_namespace,job_title,job_params(128)),
KEY job_timestamp (job_timestamp),
KEY job_sha1 (job_sha1),
KEY job_cmd_token (job_cmd,job_token,job_random),
KEY job_cmd_token_id (job_cmd,job_token,job_id)
);
INSERT INTO t1 VALUES
(NULL, 'foo', 1, 'foo', 'foo', 'foo', 1, 'foo', 'foo', 'foo', 1),
(NULL, 'bar', 2, 'bar', 'bar', 'bar', 2, 'bar', 'bar', 'bar', 2);
SELECT DISTINCT job_cmd FROM t1 WHERE job_cmd IN ('foobar','null');
job_cmd
drop table t1;
CREATE TABLE t1 (f1 INT NOT NULL, f2 VARCHAR(3) NOT NULL, KEY(f1), KEY(f2, f1));
INSERT INTO t1 VALUES (0,'foo'),(1,'bar');
SELECT 1 IN ( SELECT COUNT( DISTINCT f2 ) FROM t1 WHERE f1 <= 4 );
1 IN ( SELECT COUNT( DISTINCT f2 ) FROM t1 WHERE f1 <= 4 )
0
drop table t1;
#
# MDEV-20922: Adding an order by changes the query results
#
CREATE TABLE t1(a int, b int);
INSERT INTO t1 values (1, 100), (2, 200), (3, 100), (4, 200), (5, 200);
create view v1 as select a, b+1 as x from t1;
SELECT x, COUNT(DISTINCT a) AS y FROM v1 GROUP BY x ORDER BY y;
x y
101 2
201 3
SELECT b+1 AS x, COUNT(DISTINCT a) AS y FROM t1 GROUP BY x ORDER BY y;
x y
101 2
201 3
drop view v1;
drop table t1;
#
# MDEV-10694 - SIGFPE and/or huge memory allocation in maria_create with distinct/group by/ rollup
#
create table t1 (a int,b int) ;
insert into t1 values(-126,7),(1,1),(0,0),(-1,1),(351,65534);
select distinct 1 from t1 group by a,b with rollup limit 1;
1
1
drop table t1;
CREATE TABLE t1 ( pk int, i1 int, v1 varchar(1));
explain
SELECT 1 FROM t1
GROUP BY REPEAT((BINARY pk), v1), AES_DECRYPT((@A := i1), 20852) WITH ROLLUP HAVING LOAD_FILE('a') ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
SELECT 1 FROM t1
GROUP BY REPEAT((BINARY pk), v1), AES_DECRYPT((@A := i1), 20852) WITH ROLLUP HAVING LOAD_FILE('a') ;
1
drop table t1;
#
# MDEV-22019: Sig 11 in next_breadth_first_tab | max_sort_length setting + double
# GROUP BY leads to crash
#
CALL mtr.add_suppression("Out of sort memory");
CALL mtr.add_suppression("Sort aborted");
SET @save_max_sort_length= @@max_sort_length;
SET max_sort_length=2000000;
SELECT * FROM information_schema.tables t JOIN information_schema.columns c
ON t.table_schema=c.table_schema
WHERE c.table_schema=(SELECT COUNT(*) FROM INFORMATION_SCHEMA.columns GROUP BY column_type)
GROUP BY t.table_name;
ERROR HY001: Out of sort memory, consider increasing server sort buffer size
SET max_sort_length= @save_max_sort_length;
#
# MDEV-23826: ORDER BY in view definition leads to wrong result with GROUP BY on query using view
#
CREATE TABLE t1
(
id INT PRIMARY KEY AUTO_INCREMENT,
dt datetime,
INDEX(dt),
foo int
);
INSERT INTO t1 VALUES (1,'2020-09-26 12:00:00',1);
INSERT INTO t1 VALUES (2,'2020-09-26 13:00:00',1);
INSERT INTO t1 VALUES (3,'2020-09-27 13:00:00',1);
INSERT INTO t1 VALUES (4,'2020-09-27 12:00:00',1);
INSERT INTO t1 VALUES (5,'2020-09-28 12:00:00',1);
INSERT INTO t1 VALUES (6,'2020-09-28 13:00:00',1);
INSERT INTO t1 VALUES (7,'2020-09-25 12:00:00',1);
INSERT INTO t1 VALUES (8,'2020-09-25 13:00:00',1);
INSERT INTO t1 VALUES (9,'2020-09-26 13:00:00',1);
CREATE VIEW v1 AS SELECT * FROM t1;
CREATE VIEW v2 AS SELECT * FROM t1 ORDER BY dt;
SELECT dt, sum(foo) AS foo FROM v1 WHERE dt>DATE_SUB('2020-09-27 00:00:00', INTERVAL 3 DAY) GROUP BY dt;
dt foo
2020-09-25 12:00:00 1
2020-09-25 13:00:00 1
2020-09-26 12:00:00 1
2020-09-26 13:00:00 2
2020-09-27 12:00:00 1
2020-09-27 13:00:00 1
2020-09-28 12:00:00 1
2020-09-28 13:00:00 1
SELECT dt, sum(foo) AS foo FROM v2 WHERE dt>DATE_SUB('2020-09-27 00:00:00', INTERVAL 3 DAY) GROUP BY dt;
dt foo
2020-09-25 12:00:00 1
2020-09-25 13:00:00 1
2020-09-26 12:00:00 1
2020-09-26 13:00:00 2
2020-09-27 12:00:00 1
2020-09-27 13:00:00 1
2020-09-28 12:00:00 1
2020-09-28 13:00:00 1
DROP TABLE t1;
DROP VIEW v1,v2;
#
# End of 10.2 tests
#
#
# MDEV-16170
# Server crashes in Item_null_result::type_handler on SELECT with ROLLUP
#
CREATE TABLE t1 (d DATE);
INSERT INTO t1 VALUES ('2032-10-08');
SELECT d != '2023-03-04' AS f, COUNT(*) FROM t1 GROUP BY d WITH ROLLUP;
f COUNT(*)
1 1
NULL 1
DROP TABLE t1;
#
# MDEV-24710 Uninitialized value upon CREATE .. SELECT ... VALUE
#
CREATE TABLE t1 (a VARCHAR(8) NOT NULL DEFAULT '');
INSERT INTO t1 (a) VALUES ('foo');
CREATE TABLE t2 AS SELECT MAX(a) AS f1, a AS f2 FROM t1 WHERE VALUE(a) IS NOT NULL;
SELECT * from t2;
f1 f2
NULL NULL
SELECT MAX(a) AS f1, a AS f2 FROM t1 WHERE VALUE(a) IS NOT NULL;
f1 f2
NULL NULL
SELECT MAX(a) AS f1, a AS f2 FROM t1 WHERE 1=0;
f1 f2
NULL NULL
drop table t1,t2;
# Extra test by to check the fix for MDEV-24710
create table t20 (pk int primary key, a int);
insert into t20 values (1,1);
create table t21 (pk int primary key, b int not null);
insert into t21 values (1,1);
create table t22 (a int);
insert into t22 values (1),(2);
select a, (select max(t21.b) from t20 left join t21 on t21.pk=t20.a+10
where t20.pk=1 and rand(123) < 0.5) as SUBQ from t22;
a SUBQ
1 NULL
2 NULL
drop table t20, t21, t22;
#
# End of 10.3 tests
#
#
# Test new group_min_max optimization
#
create table t1 (a int, b int, c int, key(a,b,c));
insert into t1 select mod(seq,23),mod(seq,13), mod(seq,5) from seq_1_to_10000;
explain select a from t1 where a in (1,2,3) group by a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 3 Using where; Using index for group-by
explain select a from t1 where a in (1,2,3) or a = 22 group by a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 4 Using where; Using index for group-by
explain select a from t1 where a in (1,2,3) and a < 3 group by a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 2 Using where; Using index for group-by
explain select a,b from t1 where (a) in (1,2,3) and b in (5,6,7) group by a,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 10 NULL 9 Using where; Using index for group-by
explain select a,b from t1 where (a,b) in ((1,1),(2,2),(3,3)) group by a,b;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 10 NULL 3 Using where; Using index for group-by
explain select a,b,c from t1 where (a,b) in ((1,1),(2,2),(3,3)) and c=3 group by a,b,c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 15 NULL 3 Using where; Using index for group-by
# Will not use index for group-by
explain select a from t1 where a in (1,2,3) and b>1 group by a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 10 NULL 983 Using where; Using index
explain select a from t1 where a in (1,2,3) and c=1 group by a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 1161 Using where; Using index
drop table t1;
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