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MDEV-452 Add full support for auto-initialized/updated timestamp and datetime

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Generalized support for auto-updated and/or auto-initialized timestamp
and datetime columns. This patch is a reimplementation of MySQL's
"WL#5874: CURRENT_TIMESTAMP as DEFAULT for DATETIME columns". In order to
ease future merges, this implementation reused few function and variable
names from MySQL's patch, however the implementation is quite different.

TODO:
The only unresolved problem in this patch is the semantics of LOAD DATA for
TIMESTAMP and DATETIME columns in the cases when there are missing or NULL
columns. I couldn't fully comprehend the logic behind MySQL's behavior and
its relationship with their own documentation, so I left the results to be
more consistent with all other LOAD cases.

The problematic test cases can be seen by running the test file function_defaults,
and observing the test case differences. Those were left on purpose for discussion.
This commit is contained in:
unknown
2012-10-17 15:43:56 +03:00
parent 620d14f8c3
commit bc4a456758
61 changed files with 5375 additions and 540 deletions
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93
mysql-test/suite/rpl/t/rpl_function_defaults.test Normal file
View File

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--echo #
--echo # Test of function defaults on replicated tables.
--echo #
source include/master-slave.inc;
--echo connection master
connection master;
SET TIME_ZONE="+10:30";
SET TIMESTAMP=123456.789123;
SELECT CURRENT_TIMESTAMP;
--echo connection slave
connection slave;
SET TIME_ZONE="+00:00";
SET TIMESTAMP=987654321.123456;
SELECT CURRENT_TIMESTAMP;
--echo connection master
connection master;
CREATE TABLE t1 (
a TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
b TIMESTAMP(1) NOT NULL DEFAULT CURRENT_TIMESTAMP(1),
c TIMESTAMP(2) NOT NULL DEFAULT CURRENT_TIMESTAMP(2),
d TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
e TIMESTAMP(4) NOT NULL DEFAULT CURRENT_TIMESTAMP(4),
f TIMESTAMP(5) NOT NULL DEFAULT CURRENT_TIMESTAMP(5),
g TIMESTAMP(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6),
h DATETIME DEFAULT CURRENT_TIMESTAMP,
i DATETIME(1) DEFAULT CURRENT_TIMESTAMP(1),
j DATETIME(2) DEFAULT CURRENT_TIMESTAMP(2),
k DATETIME(3) DEFAULT CURRENT_TIMESTAMP(3),
l DATETIME(4) DEFAULT CURRENT_TIMESTAMP(4),
m DATETIME(5) DEFAULT CURRENT_TIMESTAMP(5),
n DATETIME(6) DEFAULT CURRENT_TIMESTAMP(6),
o INT
);
INSERT INTO t1 ( o ) VALUES ( 1 );
CREATE TABLE t2 (
a TIMESTAMP NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP,
b TIMESTAMP(1) NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP(1),
c TIMESTAMP(2) NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP(2),
d TIMESTAMP(3) NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP(3),
e TIMESTAMP(4) NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP(4),
f TIMESTAMP(5) NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP(5),
g TIMESTAMP(6) NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP(6),
h DATETIME ON UPDATE CURRENT_TIMESTAMP,
i DATETIME(1) ON UPDATE CURRENT_TIMESTAMP(1),
j DATETIME(2) ON UPDATE CURRENT_TIMESTAMP(2),
k DATETIME(3) ON UPDATE CURRENT_TIMESTAMP(3),
l DATETIME(4) ON UPDATE CURRENT_TIMESTAMP(4),
m DATETIME(5) ON UPDATE CURRENT_TIMESTAMP(5),
n DATETIME(6) ON UPDATE CURRENT_TIMESTAMP(6),
o INT
);
INSERT INTO t2 ( o ) VALUES ( 1 );
--echo sync_slave_with_master
sync_slave_with_master;
--echo connection slave
connection slave;
query_vertical SELECT * FROM t1;
query_vertical SELECT * FROM t2;
--echo connection master
connection master;
SET TIMESTAMP=1234567890.123456;
SELECT CURRENT_TIMESTAMP;
UPDATE t1 SET o = 2;
UPDATE t2 SET o = 2;
--echo sync_slave_with_master
sync_slave_with_master;
--echo connection slave
connection slave;
query_vertical SELECT * FROM t1;
query_vertical SELECT * FROM t2;
--echo connection master
connection master;
DROP TABLE t1, t2;
--source include/rpl_end.inc