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MDEV-7930 Assertion `table_share->tmp_table != NO_TMP_TABLE || m_lock_type != 2' failed in handler::ha_index_read_map

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In optimizing aggregate function do not try to touch tables from outer
query.
This commit is contained in:
Oleksandr Byelkin
2015-10-22 13:57:44 +02:00
parent e1ed331cea
commit ce1b450ab1
8 changed files with 171 additions and 2 deletions
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24
mysql-test/r/subselect_no_exists_to_in.result
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@ -7085,6 +7085,30 @@ sq
NULL
deallocate prepare stmt;
drop table t1,t2,t3,t4;
#
# MDEV-7930: Assertion `table_share->tmp_table != NO_TMP_TABLE ||
# m_lock_type != 2' failed in handler::ha_index_read_map
#
CREATE TABLE t1 (f1 INT);
INSERT INTO t1 VALUES (1),(2);
CREATE TABLE t2 (f2 INT, KEY(f2));
INSERT INTO t2 VALUES (3);
CREATE ALGORITHM=MERGE VIEW v2 AS SELECT * FROM t2;
SELECT ( SELECT MIN(v2.f2) FROM t1 ) AS sq FROM v2 GROUP BY sq;
sq
3
SELECT * FROM v2 where ( SELECT MIN(v2.f2) FROM t1 ) > 0;
f2
3
SELECT count(*) FROM v2 group by ( SELECT MIN(v2.f2) FROM t1 );
count(*)
1
delete from t1;
SELECT ( SELECT MIN(v2.f2) FROM t1 ) AS sq FROM v2 GROUP BY sq;
sq
NULL
drop view v2;
drop table t1,t2;
set optimizer_switch=default;
select @@optimizer_switch like '%exists_to_in=off%';
@@optimizer_switch like '%exists_to_in=off%'