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

           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.

1 files changed, 193 insertions, 0 deletions

diff --git a/mysql-test/main/table_value_constr.test b/mysql-test/main/table_value_constr.test
index 0dd0a7a04b0..6b89816cc0c 100644
--- a/mysql-test/main/table_value_constr.test
+++ b/mysql-test/main/table_value_constr.test
@@ -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 );