mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 20:12:31 +01:00
f502deac11
The problem is that not all column names retrieved from a SELECT statement can be used as view column names due to length and format restrictions. The server failed to properly check the conformity of those automatically generated column names before storing the final view definition on disk. Since columns retrieved from a SELECT statement can be anything ranging from functions to constants values of any format and length, the solution is to rewrite to a pre-defined format any names that are not acceptable as a view column name. The name is rewritten to "Name_exp_%u" where %u translates to the position of the column. To avoid this conversion scheme, define explict names for the view columns via the column_list clause. Also, aliases are now only generated for top level statements. mysql-test/include/view_alias.inc: Add test case for Bug#40277 mysql-test/r/compare.result: Bug#40277: SHOW CREATE VIEW returns invalid SQL mysql-test/r/group_by.result: Bug#40277: SHOW CREATE VIEW returns invalid SQL mysql-test/r/ps.result: Bug#40277: SHOW CREATE VIEW returns invalid SQL mysql-test/r/subselect.result: Bug#40277: SHOW CREATE VIEW returns invalid SQL mysql-test/r/subselect3.result: Bug#40277: SHOW CREATE VIEW returns invalid SQL mysql-test/r/type_datetime.result: Bug#40277: SHOW CREATE VIEW returns invalid SQL mysql-test/r/union.result: Bug#40277: SHOW CREATE VIEW returns invalid SQL mysql-test/r/view.result: Add test case result for Bug#40277 mysql-test/r/view_alias.result: Add test case result for Bug#40277 mysql-test/t/view_alias.test: Add test case for Bug#40277 sql/sql_view.cc: Check if auto generated column names are conforming. Also, the make_unique_view_field_name function is not used as it uses the original name to construct a new one, which does not work if the name is invalid.
966 lines
32 KiB
Text
966 lines
32 KiB
Text
drop table if exists t0, t1, t2, t3, t4, t5;
|
|
create table t1 (oref int, grp int, ie int) ;
|
|
insert into t1 (oref, grp, ie) values
|
|
(1, 1, 1),
|
|
(1, 1, 1),
|
|
(1, 2, NULL),
|
|
(2, 1, 3),
|
|
(3, 1, 4),
|
|
(3, 2, NULL);
|
|
create table t2 (oref int, a int);
|
|
insert into t2 values
|
|
(1, 1),
|
|
(2, 2),
|
|
(3, 3),
|
|
(4, NULL),
|
|
(2, NULL);
|
|
select a, oref, a in (select max(ie)
|
|
from t1 where oref=t2.oref group by grp) Z from t2;
|
|
a oref Z
|
|
1 1 1
|
|
2 2 0
|
|
3 3 NULL
|
|
NULL 4 0
|
|
NULL 2 NULL
|
|
explain extended
|
|
select a, oref, a in (select max(ie)
|
|
from t1 where oref=t2.oref group by grp) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using temporary; Using filesort
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))) AS `Z` from `test`.`t2`
|
|
explain extended
|
|
select a, oref from t2
|
|
where a in (select max(ie) from t1 where oref=t2.oref group by grp);
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using temporary; Using filesort
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) group by `test`.`t1`.`grp` having (<cache>(`test`.`t2`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))
|
|
select a, oref, a in (
|
|
select max(ie) from t1 where oref=t2.oref group by grp union
|
|
select max(ie) from t1 where oref=t2.oref group by grp
|
|
) Z from t2;
|
|
a oref Z
|
|
1 1 1
|
|
2 2 0
|
|
3 3 NULL
|
|
NULL 4 0
|
|
NULL 2 NULL
|
|
create table t3 (a int);
|
|
insert into t3 values (NULL), (NULL);
|
|
flush status;
|
|
select a in (select max(ie) from t1 where oref=4 group by grp) from t3;
|
|
a in (select max(ie) from t1 where oref=4 group by grp)
|
|
0
|
|
0
|
|
show status like 'Handler_read_rnd_next';
|
|
Variable_name Value
|
|
Handler_read_rnd_next 11
|
|
select ' ^ This must show 11' Z;
|
|
Z
|
|
^ This must show 11
|
|
explain extended select a in (select max(ie) from t1 where oref=4 group by grp) from t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 100.00
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using temporary; Using filesort
|
|
Warnings:
|
|
Note 1003 select <in_optimizer>(`test`.`t3`.`a`,<exists>(select max(`test`.`t1`.`ie`) from `test`.`t1` where (`test`.`t1`.`oref` = 4) group by `test`.`t1`.`grp` having trigcond((<cache>(`test`.`t3`.`a`) = <ref_null_helper>(max(`test`.`t1`.`ie`)))))) AS `a in (select max(ie) from t1 where oref=4 group by grp)` from `test`.`t3`
|
|
drop table t1, t2, t3;
|
|
create table t1 (a int, oref int, key(a));
|
|
insert into t1 values
|
|
(1, 1),
|
|
(1, NULL),
|
|
(2, 3),
|
|
(2, NULL),
|
|
(3, NULL);
|
|
create table t2 (a int, oref int);
|
|
insert into t2 values (1, 1), (2,2), (NULL, 3), (NULL, 4);
|
|
select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
|
|
oref a Z
|
|
1 1 1
|
|
2 2 0
|
|
3 NULL NULL
|
|
4 NULL 0
|
|
explain extended
|
|
select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 4 100.00
|
|
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 100.00 Using where; Full scan on NULL key
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,<in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where (`test`.`t1`.`oref` = `test`.`t2`.`oref`) having trigcond(<is_not_null_test>(`test`.`t1`.`a`))))) AS `Z` from `test`.`t2`
|
|
flush status;
|
|
select oref, a from t2 where a in (select a from t1 where oref=t2.oref);
|
|
oref a
|
|
1 1
|
|
show status like '%Handler_read_rnd_next';
|
|
Variable_name Value
|
|
Handler_read_rnd_next 5
|
|
delete from t2;
|
|
insert into t2 values (NULL, 0),(NULL, 0), (NULL, 0), (NULL, 0);
|
|
flush status;
|
|
select oref, a, a in (select a from t1 where oref=t2.oref) Z from t2;
|
|
oref a Z
|
|
0 NULL 0
|
|
0 NULL 0
|
|
0 NULL 0
|
|
0 NULL 0
|
|
show status like '%Handler_read%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 29
|
|
select 'No key lookups, seq reads: 29= 5 reads from t2 + 4 * 6 reads from t1.' Z;
|
|
Z
|
|
No key lookups, seq reads: 29= 5 reads from t2 + 4 * 6 reads from t1.
|
|
drop table t1, t2;
|
|
create table t1 (a int, b int, primary key (a));
|
|
insert into t1 values (1,1), (3,1),(100,1);
|
|
create table t2 (a int, b int);
|
|
insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0);
|
|
select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ;
|
|
a b Z
|
|
1 1 1
|
|
2 1 0
|
|
NULL 1 NULL
|
|
NULL 0 0
|
|
drop table t1, t2;
|
|
create table t1 (a int, b int, key(a));
|
|
insert into t1 values
|
|
(0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
|
|
create table t2 like t1;
|
|
insert into t2 select * from t1;
|
|
update t2 set b=1;
|
|
create table t3 (a int, oref int);
|
|
insert into t3 values (1, 1), (NULL,1), (NULL,0);
|
|
select a, oref,
|
|
t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
|
|
from t3;
|
|
a oref Z
|
|
1 1 1
|
|
NULL 1 NULL
|
|
NULL 0 0
|
|
explain extended
|
|
select a, oref,
|
|
t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
|
|
from t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
|
|
2 DEPENDENT SUBQUERY t1 ref_or_null a a 5 func 4 100.00 Using where; Full scan on NULL key
|
|
2 DEPENDENT SUBQUERY t2 ref a a 5 test.t1.b 1 100.00 Using where
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t3.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond(((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)))) having trigcond(<is_not_null_test>(`test`.`t1`.`a`)))) AS `Z` from `test`.`t3`
|
|
drop table t1, t2, t3;
|
|
create table t1 (a int NOT NULL, b int NOT NULL, key(a));
|
|
insert into t1 values
|
|
(0,0),(1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
|
|
create table t2 like t1;
|
|
insert into t2 select * from t1;
|
|
update t2 set b=1;
|
|
create table t3 (a int, oref int);
|
|
insert into t3 values (1, 1), (NULL,1), (NULL,0);
|
|
select a, oref,
|
|
t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
|
|
from t3;
|
|
a oref Z
|
|
1 1 1
|
|
NULL 1 NULL
|
|
NULL 0 0
|
|
This must show a trig_cond:
|
|
explain extended
|
|
select a, oref,
|
|
t3.a in (select t1.a from t1, t2 where t1.b=t2.a and t2.b=t3.oref) Z
|
|
from t3;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 100.00
|
|
2 DEPENDENT SUBQUERY t1 ref a a 4 func 2 100.00 Using where; Full scan on NULL key
|
|
2 DEPENDENT SUBQUERY t2 ref a a 4 test.t1.b 1 100.00 Using where
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t3.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t3`.`a` AS `a`,`test`.`t3`.`oref` AS `oref`,<in_optimizer>(`test`.`t3`.`a`,<exists>(select 1 from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`a` = `test`.`t1`.`b`) and (`test`.`t2`.`b` = `test`.`t3`.`oref`) and trigcond((<cache>(`test`.`t3`.`a`) = `test`.`t1`.`a`))))) AS `Z` from `test`.`t3`
|
|
drop table t1,t2,t3;
|
|
create table t1 (oref int, grp int);
|
|
insert into t1 (oref, grp) values
|
|
(1, 1),
|
|
(1, 1);
|
|
create table t2 (oref int, a int);
|
|
insert into t2 values
|
|
(1, NULL),
|
|
(2, NULL);
|
|
select a, oref,
|
|
a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
|
|
a oref Z
|
|
NULL 1 NULL
|
|
NULL 2 0
|
|
This must show a trig_cond:
|
|
explain extended
|
|
select a, oref,
|
|
a in (select count(*) from t1 group by grp having grp=t2.oref) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
|
|
Warnings:
|
|
Note 1276 Field or reference 't2.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>(`test`.`t2`.`a`,<exists>(select count(0) from `test`.`t1` group by `test`.`t1`.`grp` having ((`test`.`t1`.`grp` = `test`.`t2`.`oref`) and trigcond((<cache>(`test`.`t2`.`a`) = <ref_null_helper>(count(0))))))) AS `Z` from `test`.`t2`
|
|
drop table t1, t2;
|
|
create table t1 (a int, b int, primary key (a));
|
|
insert into t1 values (1,1), (3,1),(100,1);
|
|
create table t2 (a int, b int);
|
|
insert into t2 values (1,1),(2,1),(NULL,1),(NULL,0);
|
|
select a,b, a in (select a from t1 where t1.b = t2.b union select a from
|
|
t1 where t1.b = t2.b) Z from t2 ;
|
|
a b Z
|
|
1 1 1
|
|
2 1 0
|
|
NULL 1 NULL
|
|
NULL 0 0
|
|
select a,b, a in (select a from t1 where t1.b = t2.b) Z from t2 ;
|
|
a b Z
|
|
1 1 1
|
|
2 1 0
|
|
NULL 1 NULL
|
|
NULL 0 0
|
|
drop table t1, t2;
|
|
create table t3 (a int);
|
|
insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t2 (a int, b int, oref int);
|
|
insert into t2 values (NULL,1, 100), (NULL,2, 100);
|
|
create table t1 (a int, b int, c int, key(a,b));
|
|
insert into t1 select 2*A, 2*A, 100 from t3;
|
|
explain extended select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00
|
|
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 2 100.00 Using where; Full scan on NULL key
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a checking NULL where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`)))))) AS `Z` from `test`.`t2`
|
|
select a,b, oref, (a,b) in (select a,b from t1 where c=t2.oref) Z from t2;
|
|
a b oref Z
|
|
NULL 1 100 0
|
|
NULL 2 100 NULL
|
|
create table t4 (x int);
|
|
insert into t4 select A.a + 10*B.a from t1 A, t1 B;
|
|
explain extended
|
|
select a,b, oref,
|
|
(a,b) in (select a,b from t1,t4 where c=t2.oref) Z
|
|
from t2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00
|
|
2 DEPENDENT SUBQUERY t1 ref_or_null a a 5 func 2 100.00 Using where; Full scan on NULL key
|
|
2 DEPENDENT SUBQUERY t4 ALL NULL NULL NULL NULL 100 100.00 Using where; Using join buffer
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`oref` AS `oref`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(select `test`.`t1`.`a`,`test`.`t1`.`b` from `test`.`t1` join `test`.`t4` where ((`test`.`t1`.`c` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`b`) or isnull(`test`.`t1`.`b`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`a`)) and trigcond(<is_not_null_test>(`test`.`t1`.`b`))))) AS `Z` from `test`.`t2`
|
|
select a,b, oref,
|
|
(a,b) in (select a,b from t1,t4 where c=t2.oref) Z
|
|
from t2;
|
|
a b oref Z
|
|
NULL 1 100 0
|
|
NULL 2 100 NULL
|
|
drop table t1,t2,t3,t4;
|
|
create table t1 (oref char(4), grp int, ie1 int, ie2 int);
|
|
insert into t1 (oref, grp, ie1, ie2) values
|
|
('aa', 10, 2, 1),
|
|
('aa', 10, 1, 1),
|
|
('aa', 20, 2, 1),
|
|
('bb', 10, 3, 1),
|
|
('cc', 10, 4, 2),
|
|
('cc', 20, 3, 2),
|
|
('ee', 10, 2, 1),
|
|
('ee', 10, 1, 2),
|
|
('ff', 20, 2, 2),
|
|
('ff', 20, 1, 2);
|
|
create table t2 (oref char(4), a int, b int);
|
|
insert into t2 values
|
|
('ee', NULL, 1),
|
|
('bb', 2, 1),
|
|
('ff', 2, 2),
|
|
('cc', 3, NULL),
|
|
('bb', NULL, NULL),
|
|
('aa', 1, 1),
|
|
('dd', 1, NULL);
|
|
alter table t1 add index idx(ie1,ie2);
|
|
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=3 and b is null ;
|
|
oref a b Z
|
|
cc 3 NULL NULL
|
|
insert into t2 values ('new1', 10,10);
|
|
insert into t1 values ('new1', 1234, 10, NULL);
|
|
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10;
|
|
oref a b Z
|
|
new1 10 10 NULL
|
|
explain extended
|
|
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2 where a=10 and b=10;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 8 100.00 Using where
|
|
2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 100.00 Using where; Full scan on NULL key
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`)))))) AS `Z` from `test`.`t2` where ((`test`.`t2`.`b` = 10) and (`test`.`t2`.`a` = 10))
|
|
drop table t1, t2;
|
|
create table t1 (oref char(4), grp int, ie int);
|
|
insert into t1 (oref, grp, ie) values
|
|
('aa', 10, 2),
|
|
('aa', 10, 1),
|
|
('aa', 20, NULL),
|
|
('bb', 10, 3),
|
|
('cc', 10, 4),
|
|
('cc', 20, NULL),
|
|
('ee', 10, NULL),
|
|
('ee', 10, NULL),
|
|
('ff', 20, 2),
|
|
('ff', 20, 1);
|
|
create table t2 (oref char(4), a int);
|
|
insert into t2 values
|
|
('ee', NULL),
|
|
('bb', 2),
|
|
('ff', 2),
|
|
('cc', 3),
|
|
('aa', 1),
|
|
('dd', NULL),
|
|
('bb', NULL);
|
|
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
|
|
oref a Z
|
|
ee NULL NULL
|
|
bb 2 0
|
|
ff 2 1
|
|
cc 3 NULL
|
|
aa 1 1
|
|
dd NULL 0
|
|
bb NULL NULL
|
|
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
|
|
oref a
|
|
ff 2
|
|
aa 1
|
|
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
|
|
oref a
|
|
bb 2
|
|
dd NULL
|
|
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
|
|
oref a Z
|
|
ee NULL NULL
|
|
bb 2 0
|
|
ff 2 0
|
|
cc 3 NULL
|
|
aa 1 1
|
|
dd NULL 0
|
|
bb NULL NULL
|
|
select oref, a from t2 where
|
|
a in (select min(ie) from t1 where oref=t2.oref group by grp);
|
|
oref a
|
|
aa 1
|
|
select oref, a from t2 where
|
|
a not in (select min(ie) from t1 where oref=t2.oref group by grp);
|
|
oref a
|
|
bb 2
|
|
ff 2
|
|
dd NULL
|
|
update t1 set ie=3 where oref='ff' and ie=1;
|
|
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
|
|
grp) Z from t2;
|
|
oref a Z
|
|
ee NULL NULL
|
|
bb 2 0
|
|
ff 2 1
|
|
cc 3 NULL
|
|
aa 1 1
|
|
dd NULL 0
|
|
bb NULL NULL
|
|
select oref, a from t2 where a in (select min(ie) from t1 where
|
|
oref=t2.oref group by grp);
|
|
oref a
|
|
ff 2
|
|
aa 1
|
|
select oref, a from t2 where a not in (select min(ie) from t1 where
|
|
oref=t2.oref group by grp);
|
|
oref a
|
|
bb 2
|
|
dd NULL
|
|
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by
|
|
grp having min(ie) > 1) Z from t2;
|
|
oref a Z
|
|
ee NULL 0
|
|
bb 2 0
|
|
ff 2 1
|
|
cc 3 0
|
|
aa 1 0
|
|
dd NULL 0
|
|
bb NULL NULL
|
|
select oref, a from t2 where a in (select min(ie) from t1 where
|
|
oref=t2.oref group by grp having min(ie) > 1);
|
|
oref a
|
|
ff 2
|
|
select oref, a from t2 where a not in (select min(ie) from t1 where
|
|
oref=t2.oref group by grp having min(ie) > 1);
|
|
oref a
|
|
ee NULL
|
|
bb 2
|
|
cc 3
|
|
aa 1
|
|
dd NULL
|
|
alter table t1 add index idx(ie);
|
|
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
|
|
2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 Using where; Full scan on NULL key
|
|
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
|
|
oref a Z
|
|
ee NULL NULL
|
|
bb 2 0
|
|
ff 2 1
|
|
cc 3 NULL
|
|
aa 1 1
|
|
dd NULL 0
|
|
bb NULL NULL
|
|
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
|
|
oref a
|
|
ff 2
|
|
aa 1
|
|
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
|
|
oref a
|
|
bb 2
|
|
dd NULL
|
|
alter table t1 drop index idx;
|
|
alter table t1 add index idx(oref,ie);
|
|
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
|
|
2 DEPENDENT SUBQUERY t1 ref_or_null idx idx 10 test.t2.oref,func 4 Using where; Using index; Full scan on NULL key
|
|
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
|
|
oref a Z
|
|
ee NULL NULL
|
|
bb 2 0
|
|
ff 2 1
|
|
cc 3 NULL
|
|
aa 1 1
|
|
dd NULL 0
|
|
bb NULL NULL
|
|
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
|
|
oref a
|
|
ff 2
|
|
aa 1
|
|
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
|
|
oref a
|
|
bb 2
|
|
dd NULL
|
|
explain
|
|
select oref, a,
|
|
a in (select min(ie) from t1 where oref=t2.oref
|
|
group by grp having min(ie) > 1) Z
|
|
from t2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
|
|
2 DEPENDENT SUBQUERY t1 ref idx idx 5 test.t2.oref 2 Using where; Using temporary; Using filesort
|
|
select oref, a,
|
|
a in (select min(ie) from t1 where oref=t2.oref
|
|
group by grp having min(ie) > 1) Z
|
|
from t2;
|
|
oref a Z
|
|
ee NULL 0
|
|
bb 2 0
|
|
ff 2 1
|
|
cc 3 0
|
|
aa 1 0
|
|
dd NULL 0
|
|
bb NULL NULL
|
|
select oref, a from t2 where a in (select min(ie) from t1 where oref=t2.oref
|
|
group by grp having min(ie) > 1);
|
|
oref a
|
|
ff 2
|
|
select oref, a from t2 where a not in (select min(ie) from t1 where oref=t2.oref
|
|
group by grp having min(ie) > 1);
|
|
oref a
|
|
ee NULL
|
|
bb 2
|
|
cc 3
|
|
aa 1
|
|
dd NULL
|
|
drop table t1,t2;
|
|
create table t1 (oref char(4), grp int, ie1 int, ie2 int);
|
|
insert into t1 (oref, grp, ie1, ie2) values
|
|
('aa', 10, 2, 1),
|
|
('aa', 10, 1, 1),
|
|
('aa', 20, 2, 1),
|
|
('bb', 10, 3, 1),
|
|
('cc', 10, 4, 2),
|
|
('cc', 20, 3, 2),
|
|
('ee', 10, 2, 1),
|
|
('ee', 10, 1, 2),
|
|
('ff', 20, 2, 2),
|
|
('ff', 20, 1, 2);
|
|
create table t2 (oref char(4), a int, b int);
|
|
insert into t2 values
|
|
('ee', NULL, 1),
|
|
('bb', 2, 1),
|
|
('ff', 2, 2),
|
|
('cc', 3, NULL),
|
|
('bb', NULL, NULL),
|
|
('aa', 1, 1),
|
|
('dd', 1, NULL);
|
|
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
|
|
oref a b Z
|
|
ee NULL 1 NULL
|
|
bb 2 1 0
|
|
ff 2 2 1
|
|
cc 3 NULL NULL
|
|
bb NULL NULL NULL
|
|
aa 1 1 1
|
|
dd 1 NULL 0
|
|
select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
|
|
oref a b
|
|
ff 2 2
|
|
aa 1 1
|
|
select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
|
|
oref a b
|
|
bb 2 1
|
|
dd 1 NULL
|
|
select oref, a, b,
|
|
(a,b) in (select min(ie1),max(ie2) from t1
|
|
where oref=t2.oref group by grp) Z
|
|
from t2;
|
|
oref a b Z
|
|
ee NULL 1 0
|
|
bb 2 1 0
|
|
ff 2 2 0
|
|
cc 3 NULL NULL
|
|
bb NULL NULL NULL
|
|
aa 1 1 1
|
|
dd 1 NULL 0
|
|
select oref, a, b from t2 where
|
|
(a,b) in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
|
|
oref a b
|
|
aa 1 1
|
|
select oref, a, b from t2 where
|
|
(a,b) not in (select min(ie1), max(ie2) from t1 where oref=t2.oref group by grp);
|
|
oref a b
|
|
ee NULL 1
|
|
bb 2 1
|
|
ff 2 2
|
|
dd 1 NULL
|
|
alter table t1 add index idx(ie1,ie2);
|
|
explain select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
|
|
2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 Using where; Full scan on NULL key
|
|
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
|
|
oref a b Z
|
|
ee NULL 1 NULL
|
|
bb 2 1 0
|
|
ff 2 2 1
|
|
cc 3 NULL NULL
|
|
bb NULL NULL NULL
|
|
aa 1 1 1
|
|
dd 1 NULL 0
|
|
select oref, a, b from t2 where (a,b) in (select ie1,ie2 from t1 where oref=t2.oref);
|
|
oref a b
|
|
ff 2 2
|
|
aa 1 1
|
|
select oref, a, b from t2 where (a,b) not in (select ie1,ie2 from t1 where oref=t2.oref);
|
|
oref a b
|
|
bb 2 1
|
|
dd 1 NULL
|
|
explain extended
|
|
select oref, a, b, (a,b) in (select ie1,ie2 from t1 where oref=t2.oref) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 7 100.00
|
|
2 DEPENDENT SUBQUERY t1 index_subquery idx idx 5 func 4 100.00 Using where; Full scan on NULL key
|
|
Warnings:
|
|
Note 1276 Field or reference 'test.t2.oref' of SELECT #2 was resolved in SELECT #1
|
|
Note 1003 select `test`.`t2`.`oref` AS `oref`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,<in_optimizer>((`test`.`t2`.`a`,`test`.`t2`.`b`),<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on idx checking NULL where ((`test`.`t1`.`oref` = `test`.`t2`.`oref`) and trigcond(((<cache>(`test`.`t2`.`a`) = `test`.`t1`.`ie1`) or isnull(`test`.`t1`.`ie1`))) and trigcond(((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`ie2`) or isnull(`test`.`t1`.`ie2`)))) having (trigcond(<is_not_null_test>(`test`.`t1`.`ie1`)) and trigcond(<is_not_null_test>(`test`.`t1`.`ie2`)))))) AS `Z` from `test`.`t2`
|
|
drop table t1,t2;
|
|
create table t1 (oref char(4), grp int, ie int primary key);
|
|
insert into t1 (oref, grp, ie) values
|
|
('aa', 10, 2),
|
|
('aa', 10, 1),
|
|
('bb', 10, 3),
|
|
('cc', 10, 4),
|
|
('cc', 20, 5),
|
|
('cc', 10, 6);
|
|
create table t2 (oref char(4), a int);
|
|
insert into t2 values
|
|
('ee', NULL),
|
|
('bb', 2),
|
|
('cc', 5),
|
|
('cc', 2),
|
|
('cc', NULL),
|
|
('aa', 1),
|
|
('bb', NULL);
|
|
explain select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
|
|
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using where; Full scan on NULL key
|
|
select oref, a, a in (select ie from t1 where oref=t2.oref) Z from t2;
|
|
oref a Z
|
|
ee NULL 0
|
|
bb 2 0
|
|
cc 5 1
|
|
cc 2 0
|
|
cc NULL NULL
|
|
aa 1 1
|
|
bb NULL NULL
|
|
select oref, a from t2 where a in (select ie from t1 where oref=t2.oref);
|
|
oref a
|
|
cc 5
|
|
aa 1
|
|
select oref, a from t2 where a not in (select ie from t1 where oref=t2.oref);
|
|
oref a
|
|
ee NULL
|
|
bb 2
|
|
cc 2
|
|
explain
|
|
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 7
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 6 Using where; Using temporary; Using filesort
|
|
select oref, a, a in (select min(ie) from t1 where oref=t2.oref group by grp) Z from t2;
|
|
oref a Z
|
|
ee NULL 0
|
|
bb 2 0
|
|
cc 5 1
|
|
cc 2 0
|
|
cc NULL NULL
|
|
aa 1 1
|
|
bb NULL NULL
|
|
drop table t1,t2;
|
|
create table t1 (a int, b int);
|
|
insert into t1 values (0,0), (2,2), (3,3);
|
|
create table t2 (a int, b int);
|
|
insert into t2 values (1,1), (3,3);
|
|
select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1;
|
|
a b Z
|
|
0 0 0
|
|
2 2 0
|
|
3 3 1
|
|
insert into t2 values (NULL,4);
|
|
select a, b, (a,b) in (select a, min(b) from t2 group by a) Z from t1;
|
|
a b Z
|
|
0 0 0
|
|
2 2 0
|
|
3 3 1
|
|
drop table t1,t2;
|
|
CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));
|
|
INSERT INTO t1 VALUES (1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'),
|
|
(2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'),(3,3,'j'), (3,2,'k'), (3,1,'l'),
|
|
(1,9,'m');
|
|
CREATE TABLE t2 (a int, b INT, c CHAR(10) NOT NULL, PRIMARY KEY (a, b));
|
|
INSERT INTO t2 SELECT * FROM t1;
|
|
SELECT a, MAX(b), (SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b))
|
|
as test FROM t1 GROUP BY a;
|
|
a MAX(b) test
|
|
1 9 m
|
|
2 3 h
|
|
3 4 i
|
|
SELECT * FROM t1 GROUP by t1.a
|
|
HAVING (MAX(t1.b) > (SELECT MAX(t2.b) FROM t2 WHERE t2.c < t1.c
|
|
HAVING MAX(t2.b+t1.a) < 10));
|
|
a b c
|
|
SELECT a,b,c FROM t1 WHERE b in (9,3,4) ORDER BY b,c;
|
|
a b c
|
|
1 3 c
|
|
2 3 h
|
|
3 3 j
|
|
1 4 d
|
|
3 4 i
|
|
1 9 m
|
|
SELECT a, MAX(b),
|
|
(SELECT COUNT(DISTINCT t.c) FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b)
|
|
LIMIT 1)
|
|
as cnt,
|
|
(SELECT t.b FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1)
|
|
as t_b,
|
|
(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1)
|
|
as t_b,
|
|
(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) ORDER BY t.c LIMIT 1)
|
|
as t_b
|
|
FROM t1 GROUP BY a;
|
|
a MAX(b) cnt t_b t_b t_b
|
|
1 9 1 9 m m
|
|
2 3 1 3 h h
|
|
3 4 1 4 i i
|
|
SELECT a, MAX(b),
|
|
(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b) LIMIT 1) as test
|
|
FROM t1 GROUP BY a;
|
|
a MAX(b) test
|
|
1 9 m
|
|
2 3 h
|
|
3 4 i
|
|
DROP TABLE t1, t2;
|
|
CREATE TABLE t1 (a int);
|
|
CREATE TABLE t2 (b int, PRIMARY KEY(b));
|
|
INSERT INTO t1 VALUES (1), (NULL), (4);
|
|
INSERT INTO t2 VALUES (3), (1),(2), (5), (4), (7), (6);
|
|
EXPLAIN EXTENDED
|
|
SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1));
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 100.00 Using index
|
|
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`b` = `test`.`t1`.`a`) and (not(<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 from `test`.`t1` where ((<cache>(`test`.`t2`.`b`) = `test`.`t1`.`a`) or isnull(`test`.`t1`.`a`)) having <is_not_null_test>(`test`.`t1`.`a`))))))
|
|
SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1));
|
|
a
|
|
SELECT a FROM t1, t2 WHERE a=b AND (b NOT IN (SELECT a FROM t1 WHERE a > 4));
|
|
a
|
|
1
|
|
4
|
|
DROP TABLE t1,t2;
|
|
CREATE TABLE t1 (id int);
|
|
CREATE TABLE t2 (id int PRIMARY KEY);
|
|
CREATE TABLE t3 (id int PRIMARY KEY, name varchar(10));
|
|
INSERT INTO t1 VALUES (2), (NULL), (3), (1);
|
|
INSERT INTO t2 VALUES (234), (345), (457);
|
|
INSERT INTO t3 VALUES (222,'bbb'), (333,'ccc'), (111,'aaa');
|
|
EXPLAIN
|
|
SELECT * FROM t1
|
|
WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3
|
|
WHERE t3.name='xxx' AND t2.id=t3.id);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
|
|
2 DEPENDENT SUBQUERY t2 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Using index; Full scan on NULL key
|
|
2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 func 1 Using where; Full scan on NULL key
|
|
SELECT * FROM t1
|
|
WHERE t1.id NOT IN (SELECT t2.id FROM t2,t3
|
|
WHERE t3.name='xxx' AND t2.id=t3.id);
|
|
id
|
|
2
|
|
NULL
|
|
3
|
|
1
|
|
SELECT (t1.id IN (SELECT t2.id FROM t2,t3
|
|
WHERE t3.name='xxx' AND t2.id=t3.id)) AS x
|
|
FROM t1;
|
|
x
|
|
0
|
|
0
|
|
0
|
|
0
|
|
DROP TABLE t1,t2,t3;
|
|
CREATE TABLE t1 (a INT NOT NULL);
|
|
INSERT INTO t1 VALUES (1),(-1), (65),(66);
|
|
CREATE TABLE t2 (a INT UNSIGNED NOT NULL PRIMARY KEY);
|
|
INSERT INTO t2 VALUES (65),(66);
|
|
SELECT a FROM t1 WHERE a NOT IN (65,66);
|
|
a
|
|
1
|
|
-1
|
|
SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2);
|
|
a
|
|
1
|
|
-1
|
|
EXPLAIN SELECT a FROM t1 WHERE a NOT IN (SELECT a FROM t2);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 4 Using where
|
|
2 DEPENDENT SUBQUERY t2 unique_subquery PRIMARY PRIMARY 4 func 1 Using index; Using where
|
|
DROP TABLE t1, t2;
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES(1);
|
|
CREATE TABLE t2 (placeholder CHAR(11));
|
|
INSERT INTO t2 VALUES("placeholder");
|
|
SELECT ROW(1, 2) IN (SELECT t1.a, 2) FROM t1 GROUP BY t1.a;
|
|
ROW(1, 2) IN (SELECT t1.a, 2)
|
|
1
|
|
SELECT ROW(1, 2) IN (SELECT t1.a, 2 FROM t2) FROM t1 GROUP BY t1.a;
|
|
ROW(1, 2) IN (SELECT t1.a, 2 FROM t2)
|
|
1
|
|
DROP TABLE t1, t2;
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (1),(2),(3);
|
|
CREATE TABLE t2 SELECT * FROM t1;
|
|
SELECT 1 FROM t1 WHERE t1.a NOT IN (SELECT 1 FROM t1, t2 WHERE 0);
|
|
1
|
|
1
|
|
1
|
|
1
|
|
DROP TABLE t1, t2;
|
|
CREATE TABLE t1 (
|
|
pk INT PRIMARY KEY,
|
|
int_key INT,
|
|
varchar_key VARCHAR(5) UNIQUE,
|
|
varchar_nokey VARCHAR(5)
|
|
);
|
|
INSERT INTO t1 VALUES (9, 7,NULL,NULL), (10,8,'p' ,'p');
|
|
SELECT varchar_nokey
|
|
FROM t1
|
|
WHERE NULL NOT IN (
|
|
SELECT INNR.pk FROM t1 AS INNR2
|
|
LEFT JOIN t1 AS INNR ON ( INNR2.int_key = INNR.int_key )
|
|
WHERE INNR.varchar_key > 'n{'
|
|
);
|
|
varchar_nokey
|
|
DROP TABLE t1;
|
|
CREATE TABLE t1 (a INT);
|
|
INSERT INTO t1 VALUES (1), (2), (11);
|
|
# 2nd and 3rd columns should be same
|
|
SELECT a, ROW(11, 12) = (SELECT a, 22), ROW(11, 12) IN (SELECT a, 22) FROM t1 GROUP BY t1.a;
|
|
a ROW(11, 12) = (SELECT a, 22) ROW(11, 12) IN (SELECT a, 22)
|
|
1 0 0
|
|
2 0 0
|
|
11 0 0
|
|
SELECT a, ROW(11, 12) = (SELECT a, 12), ROW(11, 12) IN (SELECT a, 12) FROM t1 GROUP BY t1.a;
|
|
a ROW(11, 12) = (SELECT a, 12) ROW(11, 12) IN (SELECT a, 12)
|
|
1 0 0
|
|
2 0 0
|
|
11 1 1
|
|
SELECT a, ROW(11, 12) = (SELECT a, 22), ROW(11, 12) IN (SELECT a, 22) FROM t1;
|
|
a ROW(11, 12) = (SELECT a, 22) ROW(11, 12) IN (SELECT a, 22)
|
|
1 0 0
|
|
2 0 0
|
|
11 0 0
|
|
SELECT a, ROW(11, 12) = (SELECT a, 12), ROW(11, 12) IN (SELECT a, 12) FROM t1;
|
|
a ROW(11, 12) = (SELECT a, 12) ROW(11, 12) IN (SELECT a, 12)
|
|
1 0 0
|
|
2 0 0
|
|
11 1 1
|
|
SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 22), ROW(11, 12) IN (SELECT MAX(x), 22) FROM t1;
|
|
x ROW(11, 12) = (SELECT MAX(x), 22) ROW(11, 12) IN (SELECT MAX(x), 22)
|
|
1 0 0
|
|
2 0 0
|
|
11 0 0
|
|
# 2nd and 3rd columns should be same for x == 11 only
|
|
SELECT a AS x, ROW(11, 12) = (SELECT MAX(x), 12), ROW(11, 12) IN (SELECT MAX(x), 12) FROM t1;
|
|
x ROW(11, 12) = (SELECT MAX(x), 12) ROW(11, 12) IN (SELECT MAX(x), 12)
|
|
1 0 1
|
|
2 0 1
|
|
11 1 1
|
|
DROP TABLE t1;
|
|
# both columns should be same
|
|
SELECT ROW(1,2) = (SELECT NULL, NULL), ROW(1,2) IN (SELECT NULL, NULL);
|
|
ROW(1,2) = (SELECT NULL, NULL) ROW(1,2) IN (SELECT NULL, NULL)
|
|
NULL NULL
|
|
SELECT ROW(1,2) = (SELECT 1, NULL), ROW(1,2) IN (SELECT 1, NULL);
|
|
ROW(1,2) = (SELECT 1, NULL) ROW(1,2) IN (SELECT 1, NULL)
|
|
NULL NULL
|
|
SELECT ROW(1,2) = (SELECT NULL, 2), ROW(1,2) IN (SELECT NULL, 2);
|
|
ROW(1,2) = (SELECT NULL, 2) ROW(1,2) IN (SELECT NULL, 2)
|
|
NULL NULL
|
|
SELECT ROW(1,2) = (SELECT NULL, 1), ROW(1,2) IN (SELECT NULL, 1);
|
|
ROW(1,2) = (SELECT NULL, 1) ROW(1,2) IN (SELECT NULL, 1)
|
|
0 0
|
|
SELECT ROW(1,2) = (SELECT 1, 1), ROW(1,2) IN (SELECT 1, 1);
|
|
ROW(1,2) = (SELECT 1, 1) ROW(1,2) IN (SELECT 1, 1)
|
|
0 0
|
|
SELECT ROW(1,2) = (SELECT 1, 2), ROW(1,2) IN (SELECT 1, 2);
|
|
ROW(1,2) = (SELECT 1, 2) ROW(1,2) IN (SELECT 1, 2)
|
|
1 1
|
|
CREATE TABLE t1 (a INT, b INT, c INT);
|
|
INSERT INTO t1 VALUES (1,1,1), (1,1,1);
|
|
EXPLAIN EXTENDED
|
|
SELECT c FROM
|
|
( SELECT
|
|
(SELECT COUNT(a) FROM
|
|
(SELECT COUNT(b) FROM t1) AS x GROUP BY c
|
|
) FROM t1 GROUP BY b
|
|
) AS y;
|
|
ERROR 42S22: Unknown column 'c' in 'field list'
|
|
SHOW WARNINGS;
|
|
Level Code Message
|
|
Note 1276 Field or reference 'test.t1.a' of SELECT #3 was resolved in SELECT #2
|
|
Note 1276 Field or reference 'test.t1.c' of SELECT #3 was resolved in SELECT #2
|
|
Error 1054 Unknown column 'c' in 'field list'
|
|
Note 1003 select `c` AS `c` from (select (select count(`test`.`t1`.`a`) from (select count(`test`.`t1`.`b`) AS `COUNT(b)` from `test`.`t1`) `x` group by `c`) AS `(SELECT COUNT(a) FROM
|
|
(SELECT COUNT(b) FROM t1) AS x GROUP BY c
|
|
)` from `test`.`t1` group by `test`.`t1`.`b`) `y`
|
|
DROP TABLE t1;
|
|
End of 5.0 tests
|
|
create table t0 (a int);
|
|
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
create table t1 (
|
|
a int(11) default null,
|
|
b int(11) default null,
|
|
key (a)
|
|
);
|
|
insert into t1 select A.a+10*(B.a+10*C.a),A.a+10*(B.a+10*C.a) from t0 A, t0 B, t0 C;
|
|
create table t2 (a int(11) default null);
|
|
insert into t2 values (0),(1);
|
|
create table t3 (a int(11) default null);
|
|
insert into t3 values (0),(1);
|
|
create table t4 (a int(11) default null);
|
|
insert into t4 values (0),(1);
|
|
create table t5 (a int(11) default null);
|
|
insert into t5 values (0),(1),(0),(1);
|
|
select * from t2, t3
|
|
where
|
|
t2.a < 10 and
|
|
t3.a+1 = 2 and
|
|
t3.a in (select t1.b from t1
|
|
where t1.a+1=t1.a+1 and
|
|
t1.a < (select t4.a+10
|
|
from t4, t5 limit 2));
|
|
ERROR 21000: Subquery returns more than 1 row
|
|
drop table t0, t1, t2, t3, t4, t5;
|
|
#
|
|
# BUG#48177 - SELECTs with NOT IN subqueries containing NULL
|
|
# values return too many records
|
|
#
|
|
CREATE TABLE t1 (
|
|
i1 int DEFAULT NULL,
|
|
i2 int DEFAULT NULL
|
|
) ;
|
|
INSERT INTO t1 VALUES (1, NULL);
|
|
INSERT INTO t1 VALUES (2, 3);
|
|
INSERT INTO t1 VALUES (4, NULL);
|
|
INSERT INTO t1 VALUES (4, 0);
|
|
INSERT INTO t1 VALUES (NULL, NULL);
|
|
CREATE TABLE t2 (
|
|
i1 int DEFAULT NULL,
|
|
i2 int DEFAULT NULL
|
|
) ;
|
|
INSERT INTO t2 VALUES (4, NULL);
|
|
INSERT INTO t2 VALUES (5, 0);
|
|
|
|
Data in t1
|
|
SELECT i1, i2 FROM t1;
|
|
i1 i2
|
|
1 NULL
|
|
2 3
|
|
4 NULL
|
|
4 0
|
|
NULL NULL
|
|
|
|
Data in subquery (should be filtered out)
|
|
SELECT i1, i2 FROM t2 ORDER BY i1;
|
|
i1 i2
|
|
4 NULL
|
|
5 0
|
|
FLUSH STATUS;
|
|
|
|
SELECT i1, i2
|
|
FROM t1
|
|
WHERE (i1, i2)
|
|
NOT IN (SELECT i1, i2 FROM t2);
|
|
i1 i2
|
|
1 NULL
|
|
2 3
|
|
|
|
# Check that the subquery only has to be evaluated once
|
|
# for all-NULL values even though there are two (NULL,NULL) records
|
|
# Baseline:
|
|
SHOW STATUS LIKE '%Handler_read_rnd_next';
|
|
Variable_name Value
|
|
Handler_read_rnd_next 17
|
|
|
|
INSERT INTO t1 VALUES (NULL, NULL);
|
|
FLUSH STATUS;
|
|
|
|
SELECT i1, i2
|
|
FROM t1
|
|
WHERE (i1, i2)
|
|
NOT IN (SELECT i1, i2 FROM t2);
|
|
i1 i2
|
|
1 NULL
|
|
2 3
|
|
|
|
# Handler_read_rnd_next should be one more than baseline
|
|
# (read record from t1, but do not read from t2)
|
|
SHOW STATUS LIKE '%Handler_read_rnd_next';
|
|
Variable_name Value
|
|
Handler_read_rnd_next 18
|
|
DROP TABLE t1,t2;
|
|
End of 5.1 tests
|