database/mariadb
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Automerge.

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This commit is contained in:
Alexey Kopytov 2009-11-23 13:07:18 +03:00
commit 2bbae9383e
3 changed files with 28 additions and 1 deletions
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11
mysql-test/r/group_min_max.result
View File

@ -2501,6 +2501,17 @@ SELECT a, MAX(b) FROM t WHERE b > 0 AND b < 2 GROUP BY a;
a MAX(b)
2 1
DROP TABLE t;
#
# Bug #48472: Loose index scan inappropriately chosen for some WHERE
# conditions
#
CREATE TABLE t (a INT, b INT, INDEX (a,b));
INSERT INTO t VALUES (2,0), (2,0), (2,1), (2,1);
INSERT INTO t SELECT * FROM t;
SELECT a, MAX(b) FROM t WHERE 0=b+0 GROUP BY a;
a MAX(b)
2 0
DROP TABLE t;
End of 5.0 tests
#
# Bug #46607: Assertion failed: (cond_type == Item::FUNC_ITEM) results in

12
mysql-test/t/group_min_max.test
View File

@ -1016,6 +1016,18 @@ SELECT a, MAX(b) FROM t WHERE b > 0 AND b < 2 GROUP BY a;
DROP TABLE t;
--echo #
--echo # Bug #48472: Loose index scan inappropriately chosen for some WHERE
--echo # conditions
--echo #
CREATE TABLE t (a INT, b INT, INDEX (a,b));
INSERT INTO t VALUES (2,0), (2,0), (2,1), (2,1);
INSERT INTO t SELECT * FROM t;
SELECT a, MAX(b) FROM t WHERE 0=b+0 GROUP BY a;
DROP TABLE t;
--echo End of 5.0 tests

6
sql/opt_range.cc
View File

@ -9851,7 +9851,11 @@ check_group_min_max_predicates(COND *cond, Item_field *min_max_arg_item,
}
else if (cur_arg->const_item())
{
DBUG_RETURN(TRUE);
/*
For predicates of the form "const OP expr" we also have to check 'expr'
to make a decision.
*/
continue;
}
else
DBUG_RETURN(FALSE);