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authorunknown <igor@olga.mysql.com>2008-04-22 21:49:39 -0700
committerunknown <igor@olga.mysql.com>2008-04-22 21:49:39 -0700
commit61f6c60274ac03e2993971d7332fe9d05aaebba5 (patch)
tree72c60957d1dc2d847b35a3bf5b3098b255c5ea2b /mysql-test/r/distinct.result
parentc481f6b3cf80f471321d2ef4e7c68fe9e6e5d0ca (diff)
downloadmariadb-git-61f6c60274ac03e2993971d7332fe9d05aaebba5.tar.gz
Fixed bug#35844.
The function test_if_skip_sort_order ignored any covering index used for ref access of a table in a query with ORDER BY if this index was incompatible with the ORDER BY list and there was another covering index compatible with this list. As a result sub-optimal execution plans were chosen for some queries with ORDER BY clause. mysql-test/r/distinct.result: Adjusted results after the fix for bug#35844. mysql-test/r/order_by.result: Added a test case for bug#35844. mysql-test/t/order_by.test: Added a test case for bug#35844.
Diffstat (limited to 'mysql-test/r/distinct.result')
-rw-r--r--mysql-test/r/distinct.result2
1 files changed, 1 insertions, 1 deletions
diff --git a/mysql-test/r/distinct.result b/mysql-test/r/distinct.result
index 15e4c3f15b3..1fbda27f5da 100644
--- a/mysql-test/r/distinct.result
+++ b/mysql-test/r/distinct.result
@@ -694,7 +694,7 @@ INSERT INTO t1(a, b, c) VALUES (1, 1, 1),
(1, 2, 3);
EXPLAIN SELECT DISTINCT a, b, d, c FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 index NULL a 16 NULL 6 Using index
+1 SIMPLE t1 range NULL PRIMARY 16 NULL 7 Using index for group-by; Using temporary
SELECT DISTINCT a, b, d, c FROM t1;
a b d c
1 1 0 1