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Merge abotchkov@bk-internal.mysql.com:/home/bk/mysql-5.1-opt

Browse source 
into  mysql.com:/home/hf/work/32942/my51-32942
This commit is contained in:
unknown 2008-02-18 19:25:12 +04:00
commit 06c85bc1f0
3 changed files with 40 additions and 1 deletions
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21
mysql-test/r/select.result
View file

@ -4319,6 +4319,27 @@ SELECT * FROM t1 WHERE a IN (CONCAT('foo', 0), 'bar');
a
foo0
DROP TABLE t1;
CREATE TABLE t1 (a INT, b INT);
CREATE TABLE t2 (a INT, c INT, KEY(a));
INSERT INTO t1 VALUES (1, 1), (2, 2);
INSERT INTO t2 VALUES (1, 1), (1, 2), (1, 3), (1, 4), (1, 5),
(2, 1), (2, 2), (2, 3), (2, 4), (2, 5),
(3, 1), (3, 2), (3, 3), (3, 4), (3, 5),
(4, 1), (4, 2), (4, 3), (4, 4), (4, 5);
FLUSH STATUS;
SELECT DISTINCT b FROM t1 LEFT JOIN t2 USING(a) WHERE c <= 3;
b
1
2
SHOW STATUS LIKE 'Handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 6
DROP TABLE t1, t2;
End of 5.0 tests
create table t1(a INT, KEY (a));
INSERT INTO t1 VALUES (1),(2),(3),(4),(5);

18
mysql-test/t/select.test
View file

@ -3672,6 +3672,24 @@ INSERT INTO t1 (a) VALUES ('foo0'), ('bar0'), ('baz0');
SELECT * FROM t1 WHERE a IN (CONCAT('foo', 0), 'bar');
DROP TABLE t1;
#
# Bug #32942 now() - interval '7200' second is NOT pre-calculated, causing "full table scan"
#
CREATE TABLE t1 (a INT, b INT);
CREATE TABLE t2 (a INT, c INT, KEY(a));
INSERT INTO t1 VALUES (1, 1), (2, 2);
INSERT INTO t2 VALUES (1, 1), (1, 2), (1, 3), (1, 4), (1, 5),
(2, 1), (2, 2), (2, 3), (2, 4), (2, 5),
(3, 1), (3, 2), (3, 3), (3, 4), (3, 5),
(4, 1), (4, 2), (4, 3), (4, 4), (4, 5);
FLUSH STATUS;
SELECT DISTINCT b FROM t1 LEFT JOIN t2 USING(a) WHERE c <= 3;
SHOW STATUS LIKE 'Handler_read%';
DROP TABLE t1, t2;
--echo End of 5.0 tests
#

2
sql/sql_select.cc
View file

@ -11178,7 +11178,7 @@ evaluate_join_record(JOIN *join, JOIN_TAB *join_tab,
we found a row, as no new rows can be added to the result.
*/
if (not_used_in_distinct && found_records != join->found_records)
return NESTED_LOOP_OK;
return NESTED_LOOP_NO_MORE_ROWS;
}
else
join_tab->read_record.file->unlock_row();