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mariadb/mysql-test/suite/compat/oracle/r/table_value_constr.result
Igor Babaev bf6484e7bb MDEV-24910 Crash with SELECT that uses table value constructor as a subselect 
This bug caused crashes of the server when processing queries with table
value constructors (TVC) that contained subqueries and were used itself as
subselects. For such TVCs the following transformation is applied at the
prepare stage:
  VALUES (v1), ... (vn) => SELECT * FROM (VALUES (v1), ... (vn)) tvc_x.
This transformation allows to reduce the problem of evaluation of TVCs used
as subselects to the problem of evaluation of regular subselects.
The transformation is implemented in the wrap_tvc(). The code the function
to mimic the behaviour of the parser when processing the result of the
transformation. However this imitation was not free of some flaws. First
the function called the method exclude() that completely destroyed the
select tree structures below the transformed TVC. Second the function
used the procedure mysql_new_select to create st_select_lex nodes for
both wrapping select of the transformation and TVC. This also led to
constructing of invalid select tree structures.
The patch actually re-engineers the code of wrap_tvc().

Approved by Oleksandr Byelkin <sanja@mariadb.com>
2021-02-24 13:51:47 -08:00

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SET sql_mode=ORACLE;
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
# 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
# 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 t1 ALL NULL NULL NULL NULL 6 100.00
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 100.00
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" semi join ((values (1)) "tvc_0") where 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 t1 ALL NULL NULL NULL NULL 6 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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 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 t1 ALL NULL NULL NULL NULL 6 100.00
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 100.00
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" semi join ((values (1),(2)) "tvc_0") where 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 t1 ALL NULL NULL NULL NULL 6 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
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 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
#
DECLARE
v INT;
CURSOR cur IS VALUES(7);
BEGIN
OPEN cur;
FETCH cur INTO v;
SELECT v;
END;
|
v
7
DECLARE
v INT DEFAULT 0;
BEGIN
FOR a IN (VALUES (7)) LOOP
SET v = v + 1;
END LOOP;
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
#
# MDEV-17894: tvc with ORDER BY ... LIMIT
#
values (5), (7), (1), (3), (4) limit 2;
5
5
7
explain extended values (5), (7), (1), (3), (4) limit 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 values (5),(7),(1),(3),(4) limit 2
values (5), (7), (1), (3), (4) limit 2 offset 1;
5
7
1
explain extended values (5), (7), (1), (3), (4) limit 2 offset 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 values (5),(7),(1),(3),(4) limit 1,2
values (5), (7), (1), (3), (4) order by 1 limit 2;
5
1
3
explain extended values (5), (7), (1), (3), (4) order by 1 limit 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNIT RESULT <unit1> ALL NULL NULL NULL NULL NULL NULL Using filesort
Warnings:
Note 1003 values (5),(7),(1),(3),(4) order by 1 limit 2
values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1;
5
3
4
explain extended values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNIT RESULT <unit1> ALL NULL NULL NULL NULL NULL NULL Using filesort
Warnings:
Note 1003 values (5),(7),(1),(3),(4) order by 1 limit 1,2
values (5), (7), (1), (3), (4) order by 1;
5
1
3
4
5
7
explain extended values (5), (7), (1), (3), (4) order by 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNIT RESULT <unit1> ALL NULL NULL NULL NULL NULL NULL Using filesort
Warnings:
Note 1003 values (5),(7),(1),(3),(4) order by 1
values (5,90), (7,20), (1,70), (3,50), (4,10) order by 2;
5 90
4 10
7 20
3 50
1 70
5 90
explain extended values (5,90), (7,20), (1,70), (3,50), (4,10) order by 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNIT RESULT <unit1> ALL NULL NULL NULL NULL NULL NULL Using filesort
Warnings:
Note 1003 values (5,90),(7,20),(1,70),(3,50),(4,10) order by 2
select 2 union (values (5), (7), (1), (3), (4) limit 2);
2
2
5
7
explain extended select 2 union (values (5), (7), (1), (3), (4) limit 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select 2 AS "2" union (values (5),(7),(1),(3),(4) limit 2)
select 2 union (values (5), (7), (1), (3), (4) limit 2 offset 1);
2
2
7
1
explain extended select 2 union (values (5), (7), (1), (3), (4) limit 2 offset 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select 2 AS "2" union (values (5),(7),(1),(3),(4) limit 1,2)
select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2);
2
2
1
3
explain extended select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select 2 AS "2" union (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2)
select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1);
2
2
3
4
explain extended select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select 2 AS "2" union (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 1,2)
(values (5), (7), (1), (3), (4) limit 2) union select 2;
5
5
7
2
explain extended (values (5), (7), (1), (3), (4) limit 2) union select 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (values (5),(7),(1),(3),(4) limit 2) union /* select#2 */ select 2 AS "2"
(values (5), (7), (1), (3), (4) limit 2 offset 1) union select 2;
5
7
1
2
explain extended (values (5), (7), (1), (3), (4) limit 2 offset 1) union select 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (values (5),(7),(1),(3),(4) limit 1,2) union /* select#2 */ select 2 AS "2"
(values (5), (7), (1), (3), (4) order by 1 limit 2) union select 2;
5
1
3
2
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 2) union select 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2) union /* select#2 */ select 2 AS "2"
(values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1) union select 2;
5
3
4
2
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1) union select 2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 1,2) union /* select#2 */ select 2 AS "2"
select 3 union all (values (5), (7), (1), (3), (4) limit 2 offset 3);
3
3
3
4
explain extended select 3 union all (values (5), (7), (1), (3), (4) limit 2 offset 3);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 /* select#1 */ select 3 AS "3" union all (values (5),(7),(1),(3),(4) limit 3,2)
(values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3;
5
3
4
3
explain extended (values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 (values (5),(7),(1),(3),(4) limit 3,2) union all /* select#2 */ select 3 AS "3"
select 3 union all (values (5), (7), (1), (3), (4) order by 1 limit 2);
3
3
1
3
explain extended select 3 union all (values (5), (7), (1), (3), (4) order by 1 limit 2);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select 3 AS "3" union all (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2)
(values (5), (7), (1), (3), (4) order by 1 limit 2) union all select 3;
5
1
3
3
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 2) union all select 3;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2) union all /* select#2 */ select 3 AS "3"
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
union
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
5
7
1
3
explain extended ( values (5), (7), (1), (3), (4) limit 2 offset 1 )
union
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (values (5),(7),(1),(3),(4) limit 1,2) union (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2)
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
union all
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
5
7
1
1
3
explain extended ( values (5), (7), (1), (3), (4) limit 2 offset 1 )
union all
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 UNION <derived2> ALL NULL NULL NULL NULL 5 100.00 Using filesort
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (values (5),(7),(1),(3),(4) limit 1,2) union all (/* select#3 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 2)
(values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3 order by 1;
5
3
3
4
explain extended (values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3 order by 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort
Warnings:
Note 1003 (values (5),(7),(1),(3),(4) limit 3,2) union all /* select#2 */ select 3 AS "3" order by 1
(values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3 order by 1;
5
3
3
4
5
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3 order by 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort
Warnings:
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 1,3) union all /* select#2 */ select 3 AS "3" order by 1
(values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3
order by 1 limit 2 offset 1;
5
3
4
explain extended (values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3
order by 1 limit 2 offset 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SUBQUERY <derived3> ALL NULL NULL NULL NULL 5 100.00 Using filesort
3 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
2 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL Using filesort
Warnings:
Note 1003 (/* select#1 */ select "tvc_0"."5" AS "5" from (values (5),(7),(1),(3),(4)) "tvc_0" order by 1 limit 1,3) union all /* select#2 */ select 3 AS "3" order by 1 limit 1,2
values (5,90), (7,20), (1,70), (3,50), (4,10) order by 3;
ERROR 42S22: Unknown column '3' in 'order clause'
create view v1 as values (5), (7), (1), (3), (4) order by 1 limit 2;
show create view v1;
View Create View character_set_client collation_connection
v1 CREATE VIEW "v1" AS values (5),(7),(1),(3),(4) order by 1 limit 2 latin1 latin1_swedish_ci
select * from v1;
5
1
3
drop view v1;
create view v1 as
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
union
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
show create view v1;
View Create View character_set_client collation_connection
v1 CREATE VIEW "v1" AS (values (5),(7),(1),(3),(4) limit 1,2) union (values (5),(7),(1),(3),(4) order by 1 limit 2) latin1 latin1_swedish_ci
select * from v1;
5
7
1
3
drop view v1;
create view v1 as values (5,90), (7,20), (1,70), (3,50), (4,10) order by 3;
ERROR 42S22: Unknown column '3' in 'order clause'
create view v1 as
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
union
( values (5), (7), (1), (3), (4) order by 2 limit 2 );
ERROR 42S22: Unknown column '2' in 'order clause'
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