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3ec542dfbd
(4.1 version, with post-review fixes) The fix for another Bug (6439) limited FROM_UNIXTIME() to TIMESTAMP_MAX_VALUE which is 2145916799 or 2037-12-01 23:59:59 GMT, however unix timestamp in general is not considered to be limited by this value. All dates up to power(2,31)-1 are valid. This patch extends allowed TIMESTAMP range so, that max TIMESTAMP value is power(2,31)-1. It also corrects FROM_UNIXTIME() and UNIX_TIMESTAMP() functions, so that max allowed UNIX_TIMESTAMP() is power(2,31)-1. FROM_UNIXTIME() is fixed accordingly to allow conversion of dates up to 2038-01-19 03:14:07 UTC. The patch also fixes CONVERT_TZ() function to allow extended range of dates. The main problem solved in the patch is possible overflows of variables, used in broken-time representation to time_t conversion (required for UNIX_TIMESTAMP).
48 lines
1.8 KiB
Plaintext
48 lines
1.8 KiB
Plaintext
DROP TABLE IF EXISTS t1;
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show variables like "system_time_zone";
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Variable_name Value
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system_time_zone MET
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select @a:=FROM_UNIXTIME(1);
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@a:=FROM_UNIXTIME(1)
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1970-01-01 01:00:01
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select unix_timestamp(@a);
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unix_timestamp(@a)
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1
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CREATE TABLE t1 (ts int);
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 01:00'));
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 02:00'));
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 03:00'));
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 02:00'));
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 01:00'));
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2002-10-27 02:00'));
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2003-03-30 02:59:59'));
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2003-03-30 03:00:00'));
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2003-03-30 03:59:59'));
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INSERT INTO t1 (ts) VALUES (Unix_timestamp('2003-03-30 04:00:01'));
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SELECT ts,from_unixtime(ts) FROM t1;
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ts from_unixtime(ts)
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1035673200 2002-10-27 01:00:00
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1035680400 2002-10-27 02:00:00
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1035684000 2002-10-27 03:00:00
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1035680400 2002-10-27 02:00:00
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1035673200 2002-10-27 01:00:00
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1035680400 2002-10-27 02:00:00
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1048986000 2003-03-30 03:00:00
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1048986000 2003-03-30 03:00:00
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1048989599 2003-03-30 03:59:59
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1048989601 2003-03-30 04:00:01
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DROP TABLE t1;
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CREATE TABLE t1 (ts timestamp);
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INSERT INTO t1 (ts) VALUES ('2003-03-30 01:59:59'),
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('2003-03-30 02:59:59'),
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('2003-03-30 03:00:00');
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Warnings:
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Warning 1299 Invalid TIMESTAMP value in column 'ts' at row 2
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DROP TABLE t1;
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select unix_timestamp('1970-01-01 01:00:00'),
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unix_timestamp('1970-01-01 01:00:01'),
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unix_timestamp('2038-01-19 04:14:07'),
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unix_timestamp('2038-01-19 04:14:08');
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unix_timestamp('1970-01-01 01:00:00') unix_timestamp('1970-01-01 01:00:01') unix_timestamp('2038-01-19 04:14:07') unix_timestamp('2038-01-19 04:14:08')
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0 1 2147483647 0
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