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Bug 11758558 - 50774: WRONG RESULTSET WHEN TIMESTAMP VALUES ARE APPENDED WITH

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.0

The bug was fixed by the patch for bug number BUG 11763109 - 55779: SELECT
DOES NOT WORK PROPERLY IN MYSQL SERVER VERSION "5.1.42 SUSE MYSQL (Exact same
fix as was proposed for this bug.) Since the motivation for the two bug
reports was completely different, however, it still makes sense to push the
test case.

This patch contains only the test case.
This commit is contained in:
Martin Hansson
2011-04-18 10:44:41 +02:00
parent 5d53587949
commit 8dabe8aa92
2 changed files with 110 additions and 0 deletions
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63
mysql-test/r/type_timestamp.result
View File

@ -547,4 +547,67 @@ a
2000-01-01 00:00:01
2000-01-01 00:00:01
DROP TABLE t1;
#
# Bug#50774: failed to get the correct resultset when timestamp values
# are appended with .0
#
CREATE TABLE t1 ( a TIMESTAMP, KEY ( a ) );
INSERT INTO t1 VALUES( '2010-02-01 09:31:01' );
INSERT INTO t1 VALUES( '2010-02-01 09:31:02' );
INSERT INTO t1 VALUES( '2010-02-01 09:31:03' );
INSERT INTO t1 VALUES( '2010-02-01 09:31:04' );
SELECT * FROM t1 WHERE a >= '2010-02-01 09:31:02.0';
a
2010-02-01 09:31:02
2010-02-01 09:31:03
2010-02-01 09:31:04
SELECT * FROM t1 WHERE '2010-02-01 09:31:02.0' <= a;
a
2010-02-01 09:31:02
2010-02-01 09:31:03
2010-02-01 09:31:04
SELECT * FROM t1 WHERE a <= '2010-02-01 09:31:02.0';
a
2010-02-01 09:31:01
2010-02-01 09:31:02
SELECT * FROM t1 WHERE '2010-02-01 09:31:02.0' >= a;
a
2010-02-01 09:31:01
2010-02-01 09:31:02
EXPLAIN
SELECT * FROM t1 WHERE a >= '2010-02-01 09:31:02.0';
id select_type table type possible_keys key key_len ref rows Extra
x x x range x x x x x x
SELECT * FROM t1 WHERE a >= '2010-02-01 09:31:02.0';
a
2010-02-01 09:31:02
2010-02-01 09:31:03
2010-02-01 09:31:04
CREATE TABLE t2 ( a TIMESTAMP, KEY ( a DESC ) );
INSERT INTO t2 VALUES( '2010-02-01 09:31:01' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:02' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:03' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:04' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:05' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:06' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:07' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:08' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:09' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:10' );
INSERT INTO t2 VALUES( '2010-02-01 09:31:11' );
# The bug would cause the range optimizer's comparison to use an open
# interval here. This reveals itself only in the number of reads
# performed.
FLUSH STATUS;
EXPLAIN
SELECT * FROM t2 WHERE a < '2010-02-01 09:31:02.0';
id select_type table type possible_keys key key_len ref rows Extra
x x x range x x x x x x
SELECT * FROM t2 WHERE a < '2010-02-01 09:31:02.0';
a
2010-02-01 09:31:01
SHOW STATUS LIKE 'Handler_read_next';
Variable_name Value
Handler_read_next 1
DROP TABLE t1, t2;
End of 5.1 tests