mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-01-18 04:53:01 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions
mariadb/mysql-test/main/table_value_constr.result
Igor Babaev c43d11b96e MDEV-16930 Crash when VALUES in derived table contains expressions 
This patch always provides columns of the temporary table used for
materialization of a table value constructor with some names.
Before this patch these names were always borrowed from the items
of the first row of the table value constructor. When this row
contained expressions and expressions were not named then it could cause
different kinds of problems. In particular if the TVC is used as the
specification of a derived table this could cause a crash.
The names given to the expressions used in a TVC are the same as those
given to the columns of the result set from the corresponding SELECT.
2018-08-21 12:27:29 -07:00

2191 lines
54 KiB
Text
Raw Blame History

create table t1 (a int, b int);
insert into t1 values (1,2),(4,6),(9,7),
(1,1),(2,5),(7,8);
# just VALUES
values (1,2);
1 2
1 2
values (1,2), (3,4), (5.6,0);
1 2
1.0 2
3.0 4
5.6 0
values ("abc", "def");
abc def
abc def
# UNION that uses VALUES structure(s)
select 1,2
union
values (1,2);
1 2
1 2
values (1,2)
union
select 1,2;
1 2
1 2
select 1,2
union
values (1,2),(3,4),(5,6),(7,8);
1 2
1 2
3 4
5 6
7 8
select 3,7
union
values (1,2),(3,4),(5,6);
3 7
3 7
1 2
3 4
5 6
select 3,7,4
union
values (1,2,5),(4,5,6);
3 7 4
3 7 4
1 2 5
4 5 6
select 1,2
union
values (1,7),(3,6.5);
1 2
1 2.0
1 7.0
3 6.5
select 1,2
union
values (1,2.0),(3,6);
1 2
1 2.0
3 6.0
select 1.8,2
union
values (1,2),(3,6);
1.8 2
1.8 2
1.0 2
3.0 6
values (1,2.4),(3,6)
union
select 2.8,9;
1 2.4
1.0 2.4
3.0 6.0
2.8 9.0
values (1,2),(3,4),(5,6),(7,8)
union
select 5,6;
1 2
1 2
3 4
5 6
7 8
select "ab","cdf"
union
values ("al","zl"),("we","q");
ab cdf
ab cdf
al zl
we q
values ("ab", "cdf")
union
select "ab","cdf";
ab cdf
ab cdf
values (1,2)
union
values (1,2),(5,6);
1 2
1 2
5 6
values (1,2)
union
values (3,4),(5,6);
1 2
1 2
3 4
5 6
values (1,2)
union
values (1,2)
union values (4,5);
1 2
1 2
4 5
# UNION ALL that uses VALUES structure
values (1,2),(3,4)
union all
select 5,6;
1 2
1 2
3 4
5 6
values (1,2),(3,4)
union all
select 1,2;
1 2
1 2
3 4
1 2
select 5,6
union all
values (1,2),(3,4);
5 6
5 6
1 2
3 4
select 1,2
union all
values (1,2),(3,4);
1 2
1 2
1 2
3 4
values (1,2)
union all
values (1,2),(5,6);
1 2
1 2
1 2
5 6
values (1,2)
union all
values (3,4),(5,6);
1 2
1 2
3 4
5 6
values (1,2)
union all
values (1,2)
union all
values (4,5);
1 2
1 2
1 2
4 5
values (1,2)
union all
values (1,2)
union values (1,2);
1 2
1 2
values (1,2)
union
values (1,2)
union all
values (1,2);
1 2
1 2
1 2
# EXCEPT that uses VALUES structure(s)
select 1,2
except
values (3,4),(5,6);
1 2
1 2
select 1,2
except
values (1,2),(3,4);
1 2
values (1,2),(3,4)
except
select 5,6;
1 2
1 2
3 4
values (1,2),(3,4)
except
select 1,2;
1 2
3 4
values (1,2),(3,4)
except
values (5,6);
1 2
1 2
3 4
values (1,2),(3,4)
except
values (1,2);
1 2
3 4
# INTERSECT that uses VALUES structure(s)
select 1,2
intersect
values (3,4),(5,6);
1 2
select 1,2
intersect
values (1,2),(3,4);
1 2
1 2
values (1,2),(3,4)
intersect
select 5,6;
1 2
values (1,2),(3,4)
intersect
select 1,2;
1 2
1 2
values (1,2),(3,4)
intersect
values (5,6);
1 2
values (1,2),(3,4)
intersect
values (1,2);
1 2
1 2
# combination of different structures that uses VALUES structures : UNION + EXCEPT
values (1,2),(3,4)
except
select 1,2
union values (1,2);
1 2
1 2
3 4
values (1,2),(3,4)
except
values (1,2)
union
values (1,2);
1 2
1 2
3 4
values (1,2),(3,4)
except
values (1,2)
union
values (3,4);
1 2
3 4
values (1,2),(3,4)
union
values (1,2)
except
values (1,2);
1 2
3 4
# combination of different structures that uses VALUES structures : UNION ALL + EXCEPT
values (1,2),(3,4)
except
select 1,2
union all
values (1,2);
1 2
1 2
3 4
values (1,2),(3,4)
except
values (1,2)
union all
values (1,2);
1 2
1 2
3 4
values (1,2),(3,4)
except
values (1,2)
union all
values (3,4);
1 2
3 4
3 4
values (1,2),(3,4)
union all
values (1,2)
except
values (1,2);
1 2
3 4
# combination of different structures that uses VALUES structures : UNION + INTERSECT
values (1,2),(3,4)
intersect
select 1,2
union
values (1,2);
1 2
1 2
values (1,2),(3,4)
intersect
values (1,2)
union
values (1,2);
1 2
1 2
values (1,2),(3,4)
intersect
values (1,2)
union
values (3,4);
1 2
1 2
3 4
values (1,2),(3,4)
union
values (1,2)
intersect
values (1,2);
1 2
1 2
3 4
# combination of different structures that uses VALUES structures : UNION ALL + INTERSECT
values (1,2),(3,4)
intersect
select 1,2
union all
values (1,2);
1 2
1 2
1 2
values (1,2),(3,4)
intersect
values (1,2)
union all
values (1,2);
1 2
1 2
1 2
values (1,2),(3,4)
intersect
values (1,2)
union all
values (3,4);
1 2
1 2
3 4
values (1,2),(3,4)
union all
values (1,2)
intersect
values (1,2);
1 2
1 2
3 4
1 2
# combination of different structures that uses VALUES structures : UNION + UNION ALL
values (1,2),(3,4)
union all
select 1,2
union
values (1,2);
1 2
1 2
3 4
values (1,2),(3,4)
union all
values (1,2)
union
values (1,2);
1 2
1 2
3 4
values (1,2),(3,4)
union all
values (1,2)
union
values (3,4);
1 2
1 2
3 4
values (1,2),(3,4)
union
values (1,2)
union all
values (1,2);
1 2
1 2
3 4
1 2
values (1,2)
union
values (1,2)
union all
values (1,2);
1 2
1 2
1 2
# CTE that uses VALUES structure(s) : non-recursive CTE
with t2 as
(
values (1,2),(3,4)
)
select * from t2;
1 2
1 2
3 4
with t2 as
(
select 1,2
union
values (1,2)
)
select * from t2;
1 2
1 2
with t2 as
(
select 1,2
union
values (1,2),(3,4)
)
select * from t2;
1 2
1 2
3 4
with t2 as
(
values (1,2)
union
select 1,2
)
select * from t2;
1 2
1 2
with t2 as
(
values (1,2),(3,4)
union
select 1,2
)
select * from t2;
1 2
1 2
3 4
with t2 as
(
values (5,6)
union
values (1,2),(3,4)
)
select * from t2;
5 6
5 6
1 2
3 4
with t2 as
(
values (1,2)
union
values (1,2),(3,4)
)
select * from t2;
1 2
1 2
3 4
with t2 as
(
select 1,2
union all
values (1,2),(3,4)
)
select * from t2;
1 2
1 2
1 2
3 4
with t2 as
(
values (1,2),(3,4)
union all
select 1,2
)
select * from t2;
1 2
1 2
3 4
1 2
with t2 as
(
values (1,2)
union all
values (1,2),(3,4)
)
select * from t2;
1 2
1 2
1 2
3 4
# recursive CTE that uses VALUES structure(s) : singe VALUES structure as anchor
with recursive t2(a,b) as
(
values(1,1)
union
select t1.a, t1.b
from t1,t2
where t1.a=t2.a
)
select * from t2;
a b
1 1
1 2
with recursive t2(a,b) as
(
values(1,1)
union
select t1.a+1, t1.b
from t1,t2
where t1.a=t2.a
)
select * from t2;
a b
1 1
2 2
2 1
3 5
# recursive CTE that uses VALUES structure(s) : several VALUES structures as anchors
with recursive t2(a,b) as
(
values(1,1)
union
values (3,4)
union
select t2.a+1, t1.b
from t1,t2
where t1.a=t2.a
)
select * from t2;
a b
1 1
3 4
2 2
2 1
3 5
# recursive CTE that uses VALUES structure(s) : that uses UNION ALL
with recursive t2(a,b,st) as
(
values(1,1,1)
union all
select t2.a, t1.b, t2.st+1
from t1,t2
where t1.a=t2.a and st<3
)
select * from t2;
a b st
1 1 1
1 2 2
1 1 2
1 2 3
1 2 3
1 1 3
1 1 3
# recursive CTE that uses VALUES structure(s) : computation of factorial (first 10 elements)
with recursive fact(n,f) as
(
values(1,1)
union
select n+1,f*n from fact where n < 10
)
select * from fact;
n f
1 1
2 1
3 2
4 6
5 24
6 120
7 720
8 5040
9 40320
10 362880
# Derived table that uses VALUES structure(s) : singe VALUES structure
select * from (values (1,2),(3,4)) as t2;
1 2
1 2
3 4
# Derived table that uses VALUES structure(s) : UNION with VALUES structure(s)
select * from (select 1,2 union values (1,2)) as t2;
1 2
1 2
select * from (select 1,2 union values (1,2),(3,4)) as t2;
1 2
1 2
3 4
select * from (values (1,2) union select 1,2) as t2;
1 2
1 2
select * from (values (1,2),(3,4) union select 1,2) as t2;
1 2
1 2
3 4
select * from (values (5,6) union values (1,2),(3,4)) as t2;
5 6
5 6
1 2
3 4
select * from (values (1,2) union values (1,2),(3,4)) as t2;
1 2
1 2
3 4
# Derived table that uses VALUES structure(s) : UNION ALL with VALUES structure(s)
select * from (select 1,2 union all values (1,2),(3,4)) as t2;
1 2
1 2
1 2
3 4
select * from (values (1,2),(3,4) union all select 1,2) as t2;
1 2
1 2
3 4
1 2
select * from (values (1,2) union all values (1,2),(3,4)) as t2;
1 2
1 2
1 2
3 4
# CREATE VIEW that uses VALUES structure(s) : singe VALUES structure
create view v1 as values (1,2),(3,4);
select * from v1;
1 2
1 2
3 4
drop view v1;
# CREATE VIEW that uses VALUES structure(s) : UNION with VALUES structure(s)
create view v1 as
select 1,2
union
values (1,2);
select * from v1;
1 2
1 2
drop view v1;
create view v1 as
select 1,2
union
values (1,2),(3,4);
select * from v1;
1 2
1 2
3 4
drop view v1;
create view v1 as
values (1,2)
union
select 1,2;
select * from v1;
1 2
1 2
drop view v1;
create view v1 as
values (1,2),(3,4)
union
select 1,2;
select * from v1;
1 2
1 2
3 4
drop view v1;
create view v1 as
values (5,6)
union
values (1,2),(3,4);
select * from v1;
5 6
5 6
1 2
3 4
drop view v1;
# CREATE VIEW that uses VALUES structure(s) : UNION ALL with VALUES structure(s)
create view v1 as
values (1,2)
union
values (1,2),(3,4);
select * from v1;
1 2
1 2
3 4
drop view v1;
create view v1 as
select 1,2
union all
values (1,2),(3,4);
select * from v1;
1 2
1 2
1 2
3 4
drop view v1;
create view v1 as
values (1,2),(3,4)
union all
select 1,2;
select * from v1;
1 2
1 2
3 4
1 2
drop view v1;
create view v1 as
values (1,2)
union all
values (1,2),(3,4);
select * from v1;
1 2
1 2
1 2
3 4
drop view v1;
# IN-subquery with VALUES structure(s) : simple case
select * from t1
where a in (values (1));
a b
1 2
1 1
select * from t1
where a in (select * from (values (1)) as tvc_0);
a b
1 2
1 1
explain extended select * from t1
where a in (values (1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
3 MATERIALIZED <derived2> ALL NULL NULL NULL NULL 2 100.00
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
explain extended select * from t1
where a in (select * from (values (1)) as tvc_0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2 100.00
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
# IN-subquery with VALUES structure(s) : UNION with VALUES on the first place
select * from t1
where a in (values (1) union select 2);
a b
1 2
1 1
2 5
select * from t1
where a in (select * from (values (1)) as tvc_0 union
select 2);
a b
1 2
1 1
2 5
explain extended select * from t1
where a in (values (1) union select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
4 DEPENDENT SUBQUERY <derived2> ref key0 key0 4 func 2 100.00
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union4,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#4 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1` union /* select#3 */ select 2 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(2))))
explain extended select * from t1
where a in (select * from (values (1)) as tvc_0 union
select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY <derived3> ref key0 key0 4 func 2 100.00
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1` union /* select#4 */ select 2 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(2))))
# IN-subquery with VALUES structure(s) : UNION with VALUES on the second place
select * from t1
where a in (select 2 union values (1));
a b
1 2
1 1
2 5
select * from t1
where a in (select 2 union
select * from (values (1)) tvc_0);
a b
1 2
1 1
2 5
explain extended select * from t1
where a in (select 2 union values (1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT UNION <derived3> ref key0 key0 4 func 2 100.00
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 2 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(2) union /* select#4 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1`)))
explain extended select * from t1
where a in (select 2 union
select * from (values (1)) tvc_0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION <derived4> ref key0 key0 4 func 2 100.00
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 2 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(2) union /* select#3 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1`)))
# IN-subquery with VALUES structure(s) : UNION ALL
select * from t1
where a in (values (1) union all select b from t1);
a b
1 2
1 1
2 5
7 8
select * from t1
where a in (select * from (values (1)) as tvc_0 union all
select b from t1);
a b
1 2
1 1
2 5
7 8
explain extended select * from t1
where a in (values (1) union all select b from t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
4 DEPENDENT SUBQUERY <derived2> ref key0 key0 4 func 2 100.00
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION t1 ALL NULL NULL NULL NULL 6 100.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#4 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1` union all /* select#3 */ select `test`.`t1`.`b` from `test`.`t1` where <cache>(`test`.`t1`.`a`) = `test`.`t1`.`b`)))
explain extended select * from t1
where a in (select * from (values (1)) as tvc_0 union all
select b from t1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY <derived3> ref key0 key0 4 func 2 100.00
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT UNION t1 ALL NULL NULL NULL NULL 6 100.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1` union all /* select#4 */ select `test`.`t1`.`b` from `test`.`t1` where <cache>(`test`.`t1`.`a`) = `test`.`t1`.`b`)))
# NOT IN subquery with VALUES structure(s) : simple case
select * from t1
where a not in (values (1),(2));
a b
4 6
9 7
7 8
select * from t1
where a not in (select * from (values (1),(2)) as tvc_0);
a b
4 6
9 7
7 8
explain extended select * from t1
where a not in (values (1),(2));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
3 MATERIALIZED <derived2> ALL NULL NULL NULL NULL 2 100.00
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where !<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#3 */ select `tvc_0`.`1` from (values (1),(2)) `tvc_0` ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery3>`.`1`))))
explain extended select * from t1
where a not in (select * from (values (1),(2)) as tvc_0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where !<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,`test`.`t1`.`a` in ( <materialize> (/* select#2 */ select `tvc_0`.`1` from (values (1),(2)) `tvc_0` ), <primary_index_lookup>(`test`.`t1`.`a` in <temporary table> on distinct_key where `test`.`t1`.`a` = `<subquery2>`.`1`))))
# NOT IN subquery with VALUES structure(s) : UNION with VALUES on the first place
select * from t1
where a not in (values (1) union select 2);
a b
4 6
9 7
7 8
select * from t1
where a not in (select * from (values (1)) as tvc_0 union
select 2);
a b
4 6
9 7
7 8
explain extended select * from t1
where a not in (values (1) union select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
4 DEPENDENT SUBQUERY <derived2> ALL NULL NULL NULL NULL 2 100.00 Using where
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union4,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where !<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#4 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) = `tvc_0`.`1`) union /* select#3 */ select 2 having trigcond(<cache>(`test`.`t1`.`a`) = <ref_null_helper>(2)))))
explain extended select * from t1
where a not in (select * from (values (1)) as tvc_0 union
select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 100.00 Using where
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where !<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) = `tvc_0`.`1`) union /* select#4 */ select 2 having trigcond(<cache>(`test`.`t1`.`a`) = <ref_null_helper>(2)))))
# NOT IN subquery with VALUES structure(s) : UNION with VALUES on the second place
select * from t1
where a not in (select 2 union values (1));
a b
4 6
9 7
7 8
select * from t1
where a not in (select 2 union
select * from (values (1)) as tvc_0);
a b
4 6
9 7
7 8
explain extended select * from t1
where a not in (select 2 union values (1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT UNION <derived3> ALL NULL NULL NULL NULL 2 100.00 Using where
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where !<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 2 having trigcond(<cache>(`test`.`t1`.`a`) = <ref_null_helper>(2)) union /* select#4 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) = `tvc_0`.`1`))))
explain extended select * from t1
where a not in (select 2 union
select * from (values (1)) as tvc_0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION <derived4> ALL NULL NULL NULL NULL 2 100.00 Using where
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where !<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 2 having trigcond(<cache>(`test`.`t1`.`a`) = <ref_null_helper>(2)) union /* select#3 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) = `tvc_0`.`1`))))
# ANY-subquery with VALUES structure(s) : simple case
select * from t1
where a = any (values (1),(2));
a b
1 2
1 1
2 5
select * from t1
where a = any (select * from (values (1),(2)) as tvc_0);
a b
1 2
1 1
2 5
explain extended select * from t1
where a = any (values (1),(2));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 2 100.00
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
3 MATERIALIZED <derived2> ALL NULL NULL NULL NULL 2 100.00
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
explain extended select * from t1
where a = any (select * from (values (1),(2)) as tvc_0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2 100.00
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` semi join ((values (1),(2)) `tvc_0`) where `test`.`t1`.`a` = `tvc_0`.`1`
# ANY-subquery with VALUES structure(s) : UNION with VALUES on the first place
select * from t1
where a = any (values (1) union select 2);
a b
1 2
1 1
2 5
select * from t1
where a = any (select * from (values (1)) as tvc_0 union
select 2);
a b
1 2
1 1
2 5
explain extended select * from t1
where a = any (values (1) union select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
4 DEPENDENT SUBQUERY <derived2> ref key0 key0 4 func 2 100.00
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union4,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#4 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1` union /* select#3 */ select 2 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(2))))
explain extended select * from t1
where a = any (select * from (values (1)) as tvc_0 union
select 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY <derived3> ref key0 key0 4 func 2 100.00
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1` union /* select#4 */ select 2 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(2))))
# ANY-subquery with VALUES structure(s) : UNION with VALUES on the second place
select * from t1
where a = any (select 2 union values (1));
a b
1 2
1 1
2 5
select * from t1
where a = any (select 2 union
select * from (values (1)) as tvc_0);
a b
1 2
1 1
2 5
explain extended select * from t1
where a = any (select 2 union values (1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT UNION <derived3> ref key0 key0 4 func 2 100.00
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 2 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(2) union /* select#4 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1`)))
explain extended select * from t1
where a = any (select 2 union
select * from (values (1)) as tvc_0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION <derived4> ref key0 key0 4 func 2 100.00
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 2 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(2) union /* select#3 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1`)))
# ALL-subquery with VALUES structure(s) : simple case
select * from t1
where a = all (values (1));
a b
1 2
1 1
select * from t1
where a = all (select * from (values (1)) as tvc_0);
a b
1 2
1 1
explain extended select * from t1
where a = all (values (1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
3 DEPENDENT SUBQUERY <derived2> ALL NULL NULL NULL NULL 2 100.00 Using where
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <not>(<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#3 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) <> `tvc_0`.`1`)))))
explain extended select * from t1
where a = all (select * from (values (1)) as tvc_0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 100.00 Using where
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <not>(<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) <> `tvc_0`.`1`)))))
# ALL-subquery with VALUES structure(s) : UNION with VALUES on the first place
select * from t1
where a = all (values (1) union select 1);
a b
1 2
1 1
select * from t1
where a = all (select * from (values (1)) as tvc_0 union
select 1);
a b
1 2
1 1
explain extended select * from t1
where a = all (values (1) union select 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
4 DEPENDENT SUBQUERY <derived2> ALL NULL NULL NULL NULL 2 100.00 Using where
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union4,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <not>(<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#4 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) <> `tvc_0`.`1`) union /* select#3 */ select 1 having trigcond(<cache>(`test`.`t1`.`a`) <> <ref_null_helper>(1))))))
explain extended select * from t1
where a = all (select * from (values (1)) as tvc_0 union
select 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY <derived3> ALL NULL NULL NULL NULL 2 100.00 Using where
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <not>(<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) <> `tvc_0`.`1`) union /* select#4 */ select 1 having trigcond(<cache>(`test`.`t1`.`a`) <> <ref_null_helper>(1))))))
# ALL-subquery with VALUES structure(s) : UNION with VALUES on the second place
select * from t1
where a = any (select 1 union values (1));
a b
1 2
1 1
select * from t1
where a = any (select 1 union
select * from (values (1)) as tvc_0);
a b
1 2
1 1
explain extended select * from t1
where a = any (select 1 union values (1));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
4 DEPENDENT UNION <derived3> ref key0 key0 4 func 2 100.00
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 1 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(1) union /* select#4 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1`)))
explain extended select * from t1
where a = any (select 1 union
select * from (values (1)) as tvc_0);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00 Using where
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DEPENDENT UNION <derived4> ref key0 key0 4 func 2 100.00
4 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#2 */ select 1 having <cache>(`test`.`t1`.`a`) = <ref_null_helper>(1) union /* select#3 */ select `tvc_0`.`1` from (values (1)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`1`)))
# prepare statement that uses VALUES structure(s): single VALUES structure
prepare stmt1 from "
values (1,2);
";
execute stmt1;
1 2
1 2
execute stmt1;
1 2
1 2
deallocate prepare stmt1;
# prepare statement that uses VALUES structure(s): UNION with VALUES structure(s)
prepare stmt1 from "
select 1,2
union
values (1,2),(3,4);
";
execute stmt1;
1 2
1 2
3 4
execute stmt1;
1 2
1 2
3 4
deallocate prepare stmt1;
prepare stmt1 from "
values (1,2),(3,4)
union
select 1,2;
";
execute stmt1;
1 2
1 2
3 4
execute stmt1;
1 2
1 2
3 4
deallocate prepare stmt1;
prepare stmt1 from "
select 1,2
union
values (3,4)
union
values (1,2);
";
execute stmt1;
1 2
1 2
3 4
execute stmt1;
1 2
1 2
3 4
deallocate prepare stmt1;
prepare stmt1 from "
values (5,6)
union
values (1,2),(3,4);
";
execute stmt1;
5 6
5 6
1 2
3 4
execute stmt1;
5 6
5 6
1 2
3 4
deallocate prepare stmt1;
# prepare statement that uses VALUES structure(s): UNION ALL with VALUES structure(s)
prepare stmt1 from "
select 1,2
union
values (1,2),(3,4);
";
execute stmt1;
1 2
1 2
3 4
execute stmt1;
1 2
1 2
3 4
deallocate prepare stmt1;
prepare stmt1 from "
values (1,2),(3,4)
union all
select 1,2;
";
execute stmt1;
1 2
1 2
3 4
1 2
execute stmt1;
1 2
1 2
3 4
1 2
deallocate prepare stmt1;
prepare stmt1 from "
select 1,2
union all
values (3,4)
union all
values (1,2);
";
execute stmt1;
1 2
1 2
3 4
1 2
execute stmt1;
1 2
1 2
3 4
1 2
deallocate prepare stmt1;
prepare stmt1 from "
values (1,2)
union all
values (1,2),(3,4);
";
execute stmt1;
1 2
1 2
1 2
3 4
execute stmt1;
1 2
1 2
1 2
3 4
deallocate prepare stmt1;
# explain query that uses VALUES structure(s): single VALUES structure
explain
values (1,2);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
explain format=json
values (1,2);
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<unit1>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
# explain query that uses VALUES structure(s): UNION with VALUES structure(s)
explain
select 1,2
union
values (1,2),(3,4);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
explain
values (1,2),(3,4)
union
select 1,2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
explain
values (5,6)
union
values (1,2),(3,4);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
explain format=json
select 1,2
union
values (1,2),(3,4);
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
explain format=json
values (1,2),(3,4)
union
select 1,2;
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
explain format=json
values (5,6)
union
values (1,2),(3,4);
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
explain
select 1,2
union
values (3,4)
union
values (1,2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2,3> ALL NULL NULL NULL NULL NULL
explain format=json
select 1,2
union
values (3,4)
union
values (1,2);
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<union1,2,3>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 3,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
# explain query that uses VALUES structure(s): UNION ALL with VALUES structure(s)
explain
select 1,2
union
values (1,2),(3,4);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
explain
values (1,2),(3,4)
union all
select 1,2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
explain
values (1,2)
union all
values (1,2),(3,4);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
explain format=json
values (1,2),(3,4)
union all
select 1,2;
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
explain format=json
select 1,2
union
values (1,2),(3,4);
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
explain format=json
values (1,2)
union all
values (1,2),(3,4);
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
explain
select 1,2
union all
values (3,4)
union all
values (1,2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
explain format=json
select 1,2
union all
values (3,4)
union all
values (1,2);
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<union1,2,3>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 3,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
# analyze query that uses VALUES structure(s): single VALUES structure
analyze
values (1,2);
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
analyze format=json
values (1,2);
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<unit1>",
"access_type": "ALL",
"r_loops": 0,
"r_rows": null,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
# analyze query that uses VALUES structure(s): UNION with VALUES structure(s)
analyze
select 1,2
union
values (1,2),(3,4);
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 2.00 NULL NULL
analyze
values (1,2),(3,4)
union
select 1,2;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 2.00 NULL NULL
analyze
values (5,6)
union
values (1,2),(3,4);
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 3.00 NULL NULL
analyze format=json
select 1,2
union
values (1,2),(3,4);
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 1,
"r_rows": 2,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
analyze format=json
values (1,2),(3,4)
union
select 1,2;
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 1,
"r_rows": 2,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
analyze format=json
values (5,6)
union
values (1,2),(3,4);
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 1,
"r_rows": 3,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
analyze
select 1,2
union
values (3,4)
union
values (1,2);
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2,3> ALL NULL NULL NULL NULL NULL 2.00 NULL NULL
analyze format=json
select 1,2
union
values (3,4)
union
values (1,2);
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2,3>",
"access_type": "ALL",
"r_loops": 1,
"r_rows": 2,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 3,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
# analyze query that uses VALUES structure(s): UNION ALL with VALUES structure(s)
analyze
select 1,2
union
values (1,2),(3,4);
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL 2.00 NULL NULL
analyze
values (1,2),(3,4)
union all
select 1,2;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
analyze
values (1,2)
union all
values (1,2),(3,4);
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
analyze format=json
values (1,2),(3,4)
union all
select 1,2;
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 0,
"r_rows": null,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
analyze format=json
select 1,2
union
values (1,2),(3,4);
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 1,
"r_rows": 2,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
analyze format=json
values (1,2)
union all
values (1,2),(3,4);
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2>",
"access_type": "ALL",
"r_loops": 0,
"r_rows": null,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
analyze
select 1,2
union all
values (3,4)
union all
values (1,2);
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used
analyze format=json
select 1,2
union all
values (3,4)
union all
values (1,2);
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<union1,2,3>",
"access_type": "ALL",
"r_loops": 0,
"r_rows": null,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
},
{
"query_block": {
"select_id": 3,
"operation": "UNION",
"table": {
"message": "No tables used"
}
}
}
]
}
}
}
# different number of values in TVC
values (1,2),(3,4,5);
ERROR HY000: The used table value constructor has a different number of values
# illegal parameter data types in TVC
values (1,point(1,1)),(1,1);
ERROR HY000: Illegal parameter data types geometry and int for operation 'TABLE VALUE CONSTRUCTOR'
values (1,point(1,1)+1);
ERROR HY000: Illegal parameter data types geometry and int for operation '+'
# field reference in TVC
select * from (values (1), (b), (2)) as new_tvc;
ERROR HY000: Field reference 'b' can't be used in table value constructor
select * from (values (1), (t1.b), (2)) as new_tvc;
ERROR HY000: Field reference 't1.b' can't be used in table value constructor
drop table t1;
#
# MDEV-15940: cursor over TVC
#
BEGIN NOT ATOMIC
DECLARE v INT;
DECLARE cur CURSOR FOR VALUES(7);
OPEN cur;
FETCH cur INTO v;
SELECT v;
END;
|
v
7
BEGIN NOT ATOMIC
DECLARE v INT DEFAULT 0;
FOR a IN (VALUES (7)) DO SET v = v + 1; END FOR;
SELECT v;
END;
|
v
1
#
# MDEV-16038: empty row in TVC
#
with t as (values (),()) select 1 from t;
ERROR HY000: Row with no elements is not allowed in table value constructor in this context
#
# MDEV-17017: TVC in derived table
#
create table t1 (a int);
insert into t1 values (9), (3), (2);
select * from (values (7), (5), (8), (1), (3), (8), (1)) t;
7
7
5
8
1
3
8
1
explain select * from (values (7), (5), (8), (1), (3), (8), (1)) t;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 7
2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
select * from (values (1,11), (7,77), (3,31), (4,42)) t;
1 11
1 11
7 77
3 31
4 42
explain select * from (values (1,11), (7,77), (3,31), (4,42)) t;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 4
2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
select * from (values (7), (5), (8), (1) union values (3), (8), (1)) t;
7
7
5
8
1
3
explain select * from (values (7), (5), (8), (1) union values (3), (8), (1)) t;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 7
2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
select * from (values (7), (5), (8), (1) union select * from t1) t;
7
7
5
8
1
9
3
2
explain select * from (values (7), (5), (8), (1) union select * from t1) t;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 7
2 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION t1 ALL NULL NULL NULL NULL 3
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
drop table t1;
#
# MDEV-16930: expression in the first row of TVC specifying derived table
#
SELECT 1 + 1, 2, "abc";
1 + 1 2 abc
2 2 abc
SELECT * FROM (SELECT 1 + 1, 2, "abc") t;
1 + 1 2 abc
2 2 abc
WITH cte AS (SELECT 1 + 1, 2, "abc") SELECT * FROM cte;
1 + 1 2 abc
2 2 abc
SELECT 1 + 1, 2, "abc" UNION SELECT 3+4, 3, "abc";
1 + 1 2 abc
2 2 abc
7 3 abc
CREATE VIEW v1 AS SELECT 1 + 1, 2, "abc";
SELECT * FROM v1;
1 + 1 2 abc
2 2 abc
DROP VIEW v1;
VALUES(1 + 1,2,"abc");
1 + 1 2 abc
2 2 abc
SELECT * FROM (VALUES(1 + 1,2,"abc")) t;
1 + 1 2 abc
2 2 abc
PREPARE stmt FROM "SELECT * FROM (VALUES(1 + 1,2,'abc')) t";
EXECUTE stmt;
1 + 1 2 abc
2 2 abc
EXECUTE stmt;
1 + 1 2 abc
2 2 abc
DEALLOCATE PREPARE stmt;
Reference in a new issue View git blame Copy permalink