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merged bug 37742 to 5.1-bugteam

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This commit is contained in:
Georgi Kodinov 2008-12-08 12:23:33 +02:00
commit a10c3ff2b0
3 changed files with 127 additions and 1 deletions
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85
mysql-test/r/innodb_mysql.result
View file

@ -1683,3 +1683,88 @@ CREATE INDEX i1 on t1 (a(3));
SELECT * FROM t1 WHERE a = 'abcde';
a
DROP TABLE t1;
CREATE TABLE foo (a int, b int, c char(10),
PRIMARY KEY (c(3)),
KEY b (b)
) engine=innodb;
CREATE TABLE foo2 (a int, b int, c char(10),
PRIMARY KEY (c),
KEY b (b)
) engine=innodb;
CREATE TABLE bar (a int, b int, c char(10),
PRIMARY KEY (c(3)),
KEY b (b)
) engine=myisam;
INSERT INTO foo VALUES
(1,2,'abcdefghij'), (2,3,''), (3,4,'klmnopqrst'),
(4,5,'uvwxyz'), (5,6,'meotnsyglt'), (4,5,'asfdewe');
INSERT INTO bar SELECT * FROM foo;
INSERT INTO foo2 SELECT * FROM foo;
EXPLAIN SELECT c FROM bar WHERE b>2;;
id 1
select_type SIMPLE
table bar
type ALL
possible_keys b
key NULL
key_len NULL
ref NULL
rows 6
Extra Using where
EXPLAIN SELECT c FROM foo WHERE b>2;;
id 1
select_type SIMPLE
table foo
type ALL
possible_keys b
key NULL
key_len NULL
ref NULL
rows 6
Extra Using where
EXPLAIN SELECT c FROM foo2 WHERE b>2;;
id 1
select_type SIMPLE
table foo2
type range
possible_keys b
key b
key_len 5
ref NULL
rows 3
Extra Using where; Using index
EXPLAIN SELECT c FROM bar WHERE c>2;;
id 1
select_type SIMPLE
table bar
type ALL
possible_keys PRIMARY
key NULL
key_len NULL
ref NULL
rows 6
Extra Using where
EXPLAIN SELECT c FROM foo WHERE c>2;;
id 1
select_type SIMPLE
table foo
type ALL
possible_keys PRIMARY
key NULL
key_len NULL
ref NULL
rows 6
Extra Using where
EXPLAIN SELECT c FROM foo2 WHERE c>2;;
id 1
select_type SIMPLE
table foo2
type index
possible_keys PRIMARY
key b
key_len 5
ref NULL
rows 6
Extra Using where; Using index
DROP TABLE foo, bar, foo2;
End of 5.1 tests

39
mysql-test/t/innodb_mysql.test
View file

@ -53,3 +53,42 @@ CREATE TABLE t1 (a char(50)) ENGINE=InnoDB;
CREATE INDEX i1 on t1 (a(3));
SELECT * FROM t1 WHERE a = 'abcde';
DROP TABLE t1;
#
# Bug #37742: HA_EXTRA_KEYREAD flag is set when key contains only prefix of
# requested column
#
CREATE TABLE foo (a int, b int, c char(10),
PRIMARY KEY (c(3)),
KEY b (b)
) engine=innodb;
CREATE TABLE foo2 (a int, b int, c char(10),
PRIMARY KEY (c),
KEY b (b)
) engine=innodb;
CREATE TABLE bar (a int, b int, c char(10),
PRIMARY KEY (c(3)),
KEY b (b)
) engine=myisam;
INSERT INTO foo VALUES
(1,2,'abcdefghij'), (2,3,''), (3,4,'klmnopqrst'),
(4,5,'uvwxyz'), (5,6,'meotnsyglt'), (4,5,'asfdewe');
INSERT INTO bar SELECT * FROM foo;
INSERT INTO foo2 SELECT * FROM foo;
--query_vertical EXPLAIN SELECT c FROM bar WHERE b>2;
--query_vertical EXPLAIN SELECT c FROM foo WHERE b>2;
--query_vertical EXPLAIN SELECT c FROM foo2 WHERE b>2;
--query_vertical EXPLAIN SELECT c FROM bar WHERE c>2;
--query_vertical EXPLAIN SELECT c FROM foo WHERE c>2;
--query_vertical EXPLAIN SELECT c FROM foo2 WHERE c>2;
DROP TABLE foo, bar, foo2;
--echo End of 5.1 tests

2
sql/table.cc
View file

@ -1416,6 +1416,8 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
*/
if (ha_option & HA_PRIMARY_KEY_IN_READ_INDEX)
{
if (field->key_length() == key_part->length &&
!(field->flags & BLOB_FLAG))
field->part_of_key= share->keys_in_use;
if (field->part_of_sortkey.is_set(key))
field->part_of_sortkey= share->keys_in_use;