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Fixed bug mdev-10875.

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Now, after the implementation of mdev-8646
"Re-engineer the code for post-join operations"
create_sort_index() can be called for subqueries.
This commit is contained in:
Igor Babaev
2017-01-30 11:56:23 -08:00
parent 1d96b09890
commit 81c1abe8cf
3 changed files with 32 additions and 3 deletions
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16
mysql-test/r/win.result
View File

@ -2382,3 +2382,19 @@ pk c CNT
10 2 0.5000 10 2 0.5000
drop view v1,v2,v3,v4; drop view v1,v2,v3,v4;
drop table t0,t1; drop table t0,t1;
#
# MDEV-10875: window function in subquery
#
CREATE TABLE t1 (i INT);
INSERT INTO t1 VALUES (3),(1);
CREATE TABLE t2 (c VARCHAR(8));
INSERT INTO t2 VALUES ('foo'),('bar'),('foo');
SELECT COUNT(*) OVER (PARTITION BY c) FROM t2;
COUNT(*) OVER (PARTITION BY c)
2
1
2
SELECT * FROM t1 WHERE i IN ( SELECT COUNT(*) OVER (PARTITION BY c) FROM t2 );
i
1
DROP TABLE t1, t2;

16
mysql-test/t/win.test
View File

@ -1426,3 +1426,19 @@ select * from v4;
drop view v1,v2,v3,v4; drop view v1,v2,v3,v4;
drop table t0,t1; drop table t0,t1;
--echo #
--echo # MDEV-10875: window function in subquery
--echo #
CREATE TABLE t1 (i INT);
INSERT INTO t1 VALUES (3),(1);
CREATE TABLE t2 (c VARCHAR(8));
INSERT INTO t2 VALUES ('foo'),('bar'),('foo');
SELECT COUNT(*) OVER (PARTITION BY c) FROM t2;
SELECT * FROM t1 WHERE i IN ( SELECT COUNT(*) OVER (PARTITION BY c) FROM t2 );
DROP TABLE t1, t2;

3
sql/sql_select.cc
View File

@ -21403,9 +21403,6 @@ create_sort_index(THD *thd, JOIN *join, JOIN_TAB *tab, Filesort *fsort)
table= tab->table; table= tab->table;
select= fsort->select; select= fsort->select;
/* Currently ORDER BY ... LIMIT is not supported in subqueries. */
DBUG_ASSERT(join->group_list || !join->is_in_subquery());
table->status=0; // May be wrong if quick_select table->status=0; // May be wrong if quick_select
if (!tab->preread_init_done && tab->preread_init()) if (!tab->preread_init_done && tab->preread_init())