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Test case for BUG#15102 : select distinct returns empty result, select count distinct > 0 (correct)

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Reproduced in 5.0.16-nt. Tested to work in 5.0.20
  


mysql-test/r/group_min_max.result:
  Test case for BUG#15102 : select distinct returns empty result, select count distinct > 0 (correct)
    Reproduced in 5.0.16-nt. Tested to be fixed in 5.0.20
mysql-test/t/group_min_max.test:
  Test case for BUG#15102 : select distinct returns empty result, select count distinct > 0 (correct)
    Reproduced in 5.0.16-nt. Tested to be fixed in 5.0.20
This commit is contained in:
unknown 2006-03-27 12:20:25 +03:00
parent 273aa4899a
commit b3230cc265
2 changed files with 75 additions and 0 deletions

37
mysql-test/r/group_min_max.result
View file

@ -2070,3 +2070,40 @@ SELECT a FROM t1 WHERE a LIKE 'B%' GROUP BY a;
a
BB
DROP TABLE t1;
CREATE TABLE t1 (
a int(11) NOT NULL DEFAULT '0',
b varchar(16) COLLATE latin1_general_ci NOT NULL DEFAULT '',
PRIMARY KEY (a,b)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;
CREATE PROCEDURE a(x INT)
BEGIN
DECLARE rnd INT;
DECLARE cnt INT;
WHILE x > 0 DO
SET rnd= x % 100;
SET cnt = (SELECT COUNT(*) FROM t1 WHERE a = rnd);
INSERT INTO t1(a,b) VALUES (rnd, CAST(cnt AS CHAR));
SET x= x - 1;
END WHILE;
END|
CALL a(1000);
SELECT a FROM t1 WHERE a=0;
a
0
0
0
0
0
0
0
0
0
0
SELECT DISTINCT a FROM t1 WHERE a=0;
a
0
SELECT COUNT(DISTINCT a) FROM t1 WHERE a=0;
COUNT(DISTINCT a)
1
DROP TABLE t1;
DROP PROCEDURE a;

38
mysql-test/t/group_min_max.test
View file

@ -736,3 +736,41 @@ SELECT DISTINCT a FROM t1 WHERE a LIKE 'B%';
SELECT a FROM t1 WHERE a LIKE 'B%' GROUP BY a;
DROP TABLE t1;
#
# Bug #15102: select distinct returns empty result, select count
# distinct > 0 (correct)
#
CREATE TABLE t1 (
a int(11) NOT NULL DEFAULT '0',
b varchar(16) COLLATE latin1_general_ci NOT NULL DEFAULT '',
PRIMARY KEY (a,b)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;
delimiter |;
CREATE PROCEDURE a(x INT)
BEGIN
DECLARE rnd INT;
DECLARE cnt INT;
WHILE x > 0 DO
SET rnd= x % 100;
SET cnt = (SELECT COUNT(*) FROM t1 WHERE a = rnd);
INSERT INTO t1(a,b) VALUES (rnd, CAST(cnt AS CHAR));
SET x= x - 1;
END WHILE;
END|
DELIMITER ;|
CALL a(1000);
SELECT a FROM t1 WHERE a=0;
SELECT DISTINCT a FROM t1 WHERE a=0;
SELECT COUNT(DISTINCT a) FROM t1 WHERE a=0;
DROP TABLE t1;
DROP PROCEDURE a;