Commit b3f11ed4 authored by unknown's avatar unknown

Merge olga.mysql.com:/home/igor/mysql-5.0-opt

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug32815

parents b3d8ff4e d776054e
...@@ -1213,4 +1213,16 @@ a b ...@@ -1213,4 +1213,16 @@ a b
3 2 3 2
1 1 1 1
DROP TABLE t1; DROP TABLE t1;
CREATE TABLE t1 (id int, type char(6), d int, INDEX idx(id,d)) ENGINE=InnoDB;
INSERT INTO t1 VALUES
(191, 'member', 1), (NULL, 'member', 3), (NULL, 'member', 4), (201, 'member', 2);
EXPLAIN SELECT * FROM t1 WHERE id=191 OR id IS NULL ORDER BY d;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL idx NULL NULL NULL 3 Using where; Using filesort
SELECT * FROM t1 WHERE id=191 OR id IS NULL ORDER BY d;
id type d
191 member 1
NULL member 3
NULL member 4
DROP TABLE t1;
End of 5.0 tests End of 5.0 tests
...@@ -960,4 +960,19 @@ SELECT * FROM t1 ORDER BY b DESC, a ASC; ...@@ -960,4 +960,19 @@ SELECT * FROM t1 ORDER BY b DESC, a ASC;
DROP TABLE t1; DROP TABLE t1;
#
# Bug #32815: query with ORDER BY and a possible ref_or_null access
#
CREATE TABLE t1 (id int, type char(6), d int, INDEX idx(id,d)) ENGINE=InnoDB;
INSERT INTO t1 VALUES
(191, 'member', 1), (NULL, 'member', 3), (NULL, 'member', 4), (201, 'member', 2);
EXPLAIN SELECT * FROM t1 WHERE id=191 OR id IS NULL ORDER BY d;
SELECT * FROM t1 WHERE id=191 OR id IS NULL ORDER BY d;
DROP TABLE t1;
--echo End of 5.0 tests --echo End of 5.0 tests
...@@ -3691,7 +3691,7 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab, ...@@ -3691,7 +3691,7 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
found_eq_constant=0; found_eq_constant=0;
for (i=0 ; i < keyuse->elements-1 ; i++,use++) for (i=0 ; i < keyuse->elements-1 ; i++,use++)
{ {
if (!use->used_tables) if (!use->used_tables && use->optimize != KEY_OPTIMIZE_REF_OR_NULL)
use->table->const_key_parts[use->key]|= use->keypart_map; use->table->const_key_parts[use->key]|= use->keypart_map;
if (use->keypart != FT_KEYPART) if (use->keypart != FT_KEYPART)
{ {
......
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