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Merge of fix for bug#59308 from mysql-5.1 -> mysql-5.5

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Ole John Aske
2011-02-07 10:40:42 +01:00
parent 4f3a61edf3 3e533efa81
commit d7e3a54271
3 changed files with 177 additions and 90 deletions
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25
mysql-test/r/order_by.result
View File

@@ -1639,6 +1639,31 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL a 8 NULL 10 Using index; Using temporary; Using filesort
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 Using where
DROP TABLE t1, t2;
#
# Bug #59110: Memory leak of QUICK_SELECT_I allocated memory
# and
# Bug #59308: Incorrect result for
SELECT DISTINCT <col>... ORDER BY <col> DESC
# Use Valgrind to detect #59110!
#
CREATE TABLE t1 (a INT,KEY (a));
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
EXPLAIN SELECT DISTINCT a,1 FROM t1 WHERE a <> 1 ORDER BY a DESC;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index a a 5 NULL 10 Using where; Using index; Using filesort
SELECT DISTINCT a,1 FROM t1 WHERE a <> 1 ORDER BY a DESC;
a 1
10 1
9 1
8 1
7 1
6 1
5 1
4 1
3 1
2 1
DROP TABLE t1;
End of 5.1 tests
#
# Bug #38745: MySQL 5.1 optimizer uses filesort for ORDER BY

17
mysql-test/t/order_by.test
View File

@@ -1493,6 +1493,23 @@ LIMIT 2;
DROP TABLE t1, t2;
--echo #
--echo # Bug #59110: Memory leak of QUICK_SELECT_I allocated memory
--echo # and
--echo # Bug #59308: Incorrect result for
--echo SELECT DISTINCT <col>... ORDER BY <col> DESC
--echo
--echo # Use Valgrind to detect #59110!
--echo #
CREATE TABLE t1 (a INT,KEY (a));
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
EXPLAIN SELECT DISTINCT a,1 FROM t1 WHERE a <> 1 ORDER BY a DESC;
SELECT DISTINCT a,1 FROM t1 WHERE a <> 1 ORDER BY a DESC;
DROP TABLE t1;
--echo End of 5.1 tests