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MDEV-17894 Assertion `(thd->lex)->current_select' failed in MYSQLparse(),

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query with VALUES()

A table value constructor can be used in all contexts where a select
can be used. In particular an ORDER BY clause or a LIMIT clause or both
of them can be attached to a table value constructor to produce a new
query. Unfortunately execution of such queries was not supported.
This patch fixes the problem.
This commit is contained in:
Igor Babaev
2019-05-08 00:08:09 -07:00
parent 9d805004d8
commit 09aa5d3f69
13 changed files with 1339 additions and 47 deletions
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193
mysql-test/main/table_value_constr.test
View File

@ -1123,3 +1123,196 @@ PREPARE stmt FROM "SELECT * FROM (VALUES(1 + 1,2,'abc')) t";
EXECUTE stmt;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
--echo #
--echo # MDEV-17894: tvc with ORDER BY ... LIMIT
--echo #
let $q=
values (5), (7), (1), (3), (4) limit 2;
eval $q;
eval explain extended $q;
let $q=
values (5), (7), (1), (3), (4) limit 2 offset 1;
eval $q;
eval explain extended $q;
let $q=
values (5), (7), (1), (3), (4) order by 1 limit 2;
eval $q;
eval explain extended $q;
let $q=
values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1;
eval $q;
eval explain extended $q;
let $q=
values (5), (7), (1), (3), (4) order by 1;
eval $q;
eval explain extended $q;
let $q=
values (5,90), (7,20), (1,70), (3,50), (4,10) order by 2;
eval $q;
eval explain extended $q;
let $q=
select 2 union (values (5), (7), (1), (3), (4) limit 2);
eval $q;
eval explain extended $q;
let $q=
select 2 union (values (5), (7), (1), (3), (4) limit 2 offset 1);
eval $q;
eval explain extended $q;
let $q=
select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2);
eval $q;
eval explain extended $q;
let $q=
select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1);
eval $q;
eval explain extended $q;
let $q=
(values (5), (7), (1), (3), (4) limit 2) union select 2;
eval $q;
eval explain extended $q;
let $q=
(values (5), (7), (1), (3), (4) limit 2 offset 1) union select 2;
eval $q;
eval explain extended $q;
let $q=
(values (5), (7), (1), (3), (4) order by 1 limit 2) union select 2;
eval $q;
eval explain extended $q;
let $q=
(values (5), (7), (1), (3), (4) order by 1 limit 2 offset 1) union select 2;
eval $q;
eval explain extended $q;
let $q=
select 3 union all (values (5), (7), (1), (3), (4) limit 2 offset 3);
eval $q;
eval explain extended $q;
let $q=
(values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3;
eval $q;
eval explain extended $q;
let $q=
select 3 union all (values (5), (7), (1), (3), (4) order by 1 limit 2);
eval $q;
eval explain extended $q;
let $q=
(values (5), (7), (1), (3), (4) order by 1 limit 2) union all select 3;
eval $q;
eval explain extended $q;
let $q=
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
union
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
eval $q;
eval explain extended $q;
let $q=
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
union all
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
eval $q;
eval explain extended $q;
let $q=
(values (5), (7), (1), (3), (4) limit 2 offset 3) union all select 3 order by 1;
eval $q;
eval explain extended $q;
let $q=
(values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3 order by 1;
eval $q;
eval explain extended $q;
let $q=
(values (5), (7), (1), (3), (4) order by 1 limit 3 offset 1) union all select 3
order by 1 limit 2 offset 1;
eval $q;
eval explain extended $q;
--error ER_BAD_FIELD_ERROR
values (5,90), (7,20), (1,70), (3,50), (4,10) order by 3;
prepare stmt from "
select 2 union (values (5), (7), (1), (3), (4) limit 2)
";
execute stmt;
execute stmt;
deallocate prepare stmt;
prepare stmt from "
select 2 union (values (5), (7), (1), (3), (4) order by 1 limit 2)
";
execute stmt;
execute stmt;
deallocate prepare stmt;
prepare stmt from "
select 3 union all (values (5), (7), (1), (3), (4) limit 2)
";
execute stmt;
execute stmt;
deallocate prepare stmt;
prepare stmt from "
select 3 union all (values (5), (7), (1), (3), (4) order by 1 limit 2)
";
execute stmt;
execute stmt;
deallocate prepare stmt;
prepare stmt from "
( values (5), (7), (1), (3), (4) limit 2 offset 1 )
union
( values (5), (7), (1), (3), (4) order by 1 limit 2 );
";
execute stmt;
execute stmt;
deallocate prepare stmt;
--error ER_BAD_FIELD_ERROR
prepare stmt from "
values (5,90), (7,20), (1,70), (3,50), (4,10) order by 3;
";
create view v1 as values (5), (7), (1), (3), (4) order by 1 limit 2;
show create view v1;
select * from v1;
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;
select * from v1;
drop view v1;
--error ER_BAD_FIELD_ERROR
create view v1 as values (5,90), (7,20), (1,70), (3,50), (4,10) order by 3;
--error ER_BAD_FIELD_ERROR
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 );