mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-20 09:07:44 +03:00
411 lines
16 KiB
Plaintext
411 lines
16 KiB
Plaintext
DROP DATABASE IF EXISTS mcs92_db;
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CREATE DATABASE mcs92_db;
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USE mcs92_db;
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CREATE TABLE t1(t1_d DATE, t1_t TIME, t1_dt DATETIME)ENGINE=Columnstore;
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INSERT INTO t1 VALUES(NULL, NULL, NULL);
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INSERT INTO t1 VALUES('0000-00-00', '00:00:00', '0000-00-00');
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INSERT INTO t1 VALUES('2222-11-11', '12:12:12', '2020-11-11 12:12:12');
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INSERT INTO t1 VALUES('2020-01-01', '11:11:11', '2020-12-31 12:34:56');
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INSERT INTO t1 VALUES('2016-02-01', '11:11:11', '2017-02-01 12:12:12');
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SELECT t1_d, t1_t, t1_dt, DATEDIFF(t1_dt, t1_d) FROM t1;
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t1_d t1_t t1_dt DATEDIFF(t1_dt, t1_d)
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NULL NULL NULL NULL
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0000-00-00 00:00:00 0000-00-00 00:00:00 0
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2222-11-11 12:12:12 2020-11-11 12:12:12 -73778
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2020-01-01 11:11:11 2020-12-31 12:34:56 365
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2016-02-01 11:11:11 2017-02-01 12:12:12 366
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SELECT t1_d, t1_t, t1_dt, DATEDIFF(t1_dt, t1_d) "Datediff in days" FROM t1 WHERE t1_dt > 0;
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t1_d t1_t t1_dt Datediff in days
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2222-11-11 12:12:12 2020-11-11 12:12:12 -73778
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2020-01-01 11:11:11 2020-12-31 12:34:56 365
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2016-02-01 11:11:11 2017-02-01 12:12:12 366
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SELECT t1_d, t1_t, t1_dt, DAY(t1_dt), DAY(t1_d) FROM t1;
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t1_d t1_t t1_dt DAY(t1_dt) DAY(t1_d)
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NULL NULL NULL NULL NULL
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0000-00-00 00:00:00 0000-00-00 00:00:00 0 0
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2222-11-11 12:12:12 2020-11-11 12:12:12 11 11
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2020-01-01 11:11:11 2020-12-31 12:34:56 31 1
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2016-02-01 11:11:11 2017-02-01 12:12:12 1 1
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL 1 SECOND) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL 1 SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:13
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2020-12-31 12:34:56 2020-12-31 12:34:57
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2017-02-01 12:12:12 2017-02-01 12:12:13
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL -1 SECOND) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL -1 SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:11
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2020-12-31 12:34:56 2020-12-31 12:34:55
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2017-02-01 12:12:12 2017-02-01 12:12:11
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL 1 DAY) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL 1 DAY)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-12 12:12:12
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2020-12-31 12:34:56 2021-01-01 12:34:56
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2017-02-01 12:12:12 2017-02-02 12:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL -1 DAY) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL -1 DAY)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-10 12:12:12
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2020-12-31 12:34:56 2020-12-30 12:34:56
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2017-02-01 12:12:12 2017-01-31 12:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL 1 MONTH) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL 1 MONTH)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-12-11 12:12:12
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2020-12-31 12:34:56 2021-01-31 12:34:56
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2017-02-01 12:12:12 2017-03-01 12:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL -1 MONTH) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL -1 MONTH)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-10-11 12:12:12
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2020-12-31 12:34:56 2020-11-30 12:34:56
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2017-02-01 12:12:12 2017-01-01 12:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL 0 MONTH) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL 0 MONTH)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:12
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2020-12-31 12:34:56 2020-12-31 12:34:56
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2017-02-01 12:12:12 2017-02-01 12:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '2:1' MINUTE_SECOND) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '2:1' MINUTE_SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:14:13
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2020-12-31 12:34:56 2020-12-31 12:36:57
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2017-02-01 12:12:12 2017-02-01 12:14:13
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '-2:1' MINUTE_SECOND) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '-2:1' MINUTE_SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:10:13
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2020-12-31 12:34:56 2020-12-31 12:32:57
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2017-02-01 12:12:12 2017-02-01 12:10:13
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '2:-1' MINUTE_SECOND) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '2:-1' MINUTE_SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:14:12
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2020-12-31 12:34:56 2020-12-31 12:36:56
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2017-02-01 12:12:12 2017-02-01 12:14:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '-2:-1' MINUTE_SECOND) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '-2:-1' MINUTE_SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:10:12
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2020-12-31 12:34:56 2020-12-31 12:32:56
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2017-02-01 12:12:12 2017-02-01 12:10:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '-1 2' DAY_HOUR) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '-1 2' DAY_HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-10 14:12:12
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2020-12-31 12:34:56 2020-12-30 14:34:56
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2017-02-01 12:12:12 2017-01-31 14:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '1 2' DAY_HOUR) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '1 2' DAY_HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-12 14:12:12
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2020-12-31 12:34:56 2021-01-01 14:34:56
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2017-02-01 12:12:12 2017-02-02 14:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '-1 -2' DAY_HOUR) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '-1 -2' DAY_HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-10 12:12:12
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2020-12-31 12:34:56 2020-12-30 12:34:56
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2017-02-01 12:12:12 2017-01-31 12:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '1 -2' DAY_HOUR) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '1 -2' DAY_HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-12 12:12:12
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2020-12-31 12:34:56 2021-01-01 12:34:56
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2017-02-01 12:12:12 2017-02-02 12:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '1.9' SECOND_MICROSECOND) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '1.9' SECOND_MICROSECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:13.900000
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2020-12-31 12:34:56 2020-12-31 12:34:57.900000
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2017-02-01 12:12:12 2017-02-01 12:12:13.900000
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL '-1.9' SECOND_MICROSECOND) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL '-1.9' SECOND_MICROSECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:11.900000
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2020-12-31 12:34:56 2020-12-31 12:34:55.900000
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2017-02-01 12:12:12 2017-02-01 12:12:11.900000
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL 12 HOUR) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL 12 HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-12 00:12:12
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2020-12-31 12:34:56 2021-01-01 00:34:56
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2017-02-01 12:12:12 2017-02-02 00:12:12
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SELECT t1_dt, DATE_ADD(t1_dt, INTERVAL -1 HOUR) FROM t1;
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t1_dt DATE_ADD(t1_dt, INTERVAL -1 HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 11:12:12
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2020-12-31 12:34:56 2020-12-31 11:34:56
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2017-02-01 12:12:12 2017-02-01 11:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL 1 SECOND) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL 1 SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:11
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2020-12-31 12:34:56 2020-12-31 12:34:55
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2017-02-01 12:12:12 2017-02-01 12:12:11
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL -1 SECOND) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL -1 SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:13
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2020-12-31 12:34:56 2020-12-31 12:34:57
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2017-02-01 12:12:12 2017-02-01 12:12:13
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL 1 DAY) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL 1 DAY)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-10 12:12:12
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2020-12-31 12:34:56 2020-12-30 12:34:56
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2017-02-01 12:12:12 2017-01-31 12:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL -1 DAY) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL -1 DAY)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-12 12:12:12
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2020-12-31 12:34:56 2021-01-01 12:34:56
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2017-02-01 12:12:12 2017-02-02 12:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL 1 MONTH) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL 1 MONTH)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-10-11 12:12:12
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2020-12-31 12:34:56 2020-11-30 12:34:56
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2017-02-01 12:12:12 2017-01-01 12:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL -1 MONTH) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL -1 MONTH)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-12-11 12:12:12
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2020-12-31 12:34:56 2021-01-31 12:34:56
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2017-02-01 12:12:12 2017-03-01 12:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL 0 MONTH) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL 0 MONTH)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:12
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2020-12-31 12:34:56 2020-12-31 12:34:56
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2017-02-01 12:12:12 2017-02-01 12:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '2:1' MINUTE_SECOND) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '2:1' MINUTE_SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:10:11
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2020-12-31 12:34:56 2020-12-31 12:32:55
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2017-02-01 12:12:12 2017-02-01 12:10:11
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '-2:1' MINUTE_SECOND) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '-2:1' MINUTE_SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:14:11
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2020-12-31 12:34:56 2020-12-31 12:36:55
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2017-02-01 12:12:12 2017-02-01 12:14:11
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '2:-1' MINUTE_SECOND) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '2:-1' MINUTE_SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:10:12
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2020-12-31 12:34:56 2020-12-31 12:32:56
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2017-02-01 12:12:12 2017-02-01 12:10:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '-2:-1' MINUTE_SECOND) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '-2:-1' MINUTE_SECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:14:12
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2020-12-31 12:34:56 2020-12-31 12:36:56
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2017-02-01 12:12:12 2017-02-01 12:14:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '-1 2' DAY_HOUR) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '-1 2' DAY_HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-12 10:12:12
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2020-12-31 12:34:56 2021-01-01 10:34:56
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2017-02-01 12:12:12 2017-02-02 10:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '1 2' DAY_HOUR) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '1 2' DAY_HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-10 10:12:12
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2020-12-31 12:34:56 2020-12-30 10:34:56
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2017-02-01 12:12:12 2017-01-31 10:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '-1 -2' DAY_HOUR) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '-1 -2' DAY_HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-12 12:12:12
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2020-12-31 12:34:56 2021-01-01 12:34:56
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2017-02-01 12:12:12 2017-02-02 12:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '1 -2' DAY_HOUR) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '1 -2' DAY_HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-10 12:12:12
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2020-12-31 12:34:56 2020-12-30 12:34:56
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2017-02-01 12:12:12 2017-01-31 12:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '1.9' SECOND_MICROSECOND) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '1.9' SECOND_MICROSECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:10.999991
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2020-12-31 12:34:56 2020-12-31 12:34:54.999991
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2017-02-01 12:12:12 2017-02-01 12:12:10.999991
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL '-1.9' SECOND_MICROSECOND) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL '-1.9' SECOND_MICROSECOND)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 12:12:12.999991
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2020-12-31 12:34:56 2020-12-31 12:34:56.999991
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2017-02-01 12:12:12 2017-02-01 12:12:12.999991
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL 12 HOUR) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL 12 HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 00:12:12
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2020-12-31 12:34:56 2020-12-31 00:34:56
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2017-02-01 12:12:12 2017-02-01 00:12:12
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SELECT t1_dt, DATE_SUB(t1_dt, INTERVAL -1 HOUR) FROM t1;
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t1_dt DATE_SUB(t1_dt, INTERVAL -1 HOUR)
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NULL NULL
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0000-00-00 00:00:00 NULL
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2020-11-11 12:12:12 2020-11-11 13:12:12
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2020-12-31 12:34:56 2020-12-31 13:34:56
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2017-02-01 12:12:12 2017-02-01 13:12:12
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SELECT t1_dt, DATE_FORMAT(t1_dt, '%Y-%m-%d') a, DATE_FORMAT(t1_d, '%a %D %b %Y') b, DATE_FORMAT(t1_d, '%W %D %M %Y') c FROM t1;
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t1_dt a b c
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NULL NULL NULL NULL
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0000-00-00 00:00:00 0000-00-00 Sun 0th NON_VALID 0000 Sunday 0th NON_VALID 0000
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2020-11-11 12:12:12 2020-11-11 Mon 11th Nov 2222 Monday 11th November 2222
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2020-12-31 12:34:56 2020-12-31 Wed 1st Jan 2020 Wednesday 1st January 2020
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2017-02-01 12:12:12 2017-02-01 Mon 1st Feb 2016 Monday 1st February 2016
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SELECT t1_dt, DATE_FORMAT(t1_dt, '%Y/%m/%d %T') a, DATE_FORMAT(t1_dt, '%a %D %b %Y %H:%i') b, DATE_FORMAT(t1_dt, '%W %D %M %Y %T') c FROM t1;
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t1_dt a b c
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NULL NULL NULL NULL
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|
0000-00-00 00:00:00 0000/00/00 00:00:00 Sun 0th NON_VALID 0000 00:00 Sunday 0th NON_VALID 0000 00:00:00
|
|
2020-11-11 12:12:12 2020/11/11 12:12:12 Wed 11th Nov 2020 12:12 Wednesday 11th November 2020 12:12:12
|
|
2020-12-31 12:34:56 2020/12/31 12:34:56 Thu 31st Dec 2020 12:34 Thursday 31st December 2020 12:34:56
|
|
2017-02-01 12:12:12 2017/02/01 12:12:12 Wed 1st Feb 2017 12:12 Wednesday 1st February 2017 12:12:12
|
|
SELECT @@lc_time_names;
|
|
@@lc_time_names
|
|
en_US
|
|
SELECT t1_dt, DAYNAME(t1_dt), DAYOFWEEK(t1_dt), WEEKDAY(t1_dt) FROM t1;
|
|
t1_dt DAYNAME(t1_dt) DAYOFWEEK(t1_dt) WEEKDAY(t1_dt)
|
|
NULL NULL NULL NULL
|
|
0000-00-00 00:00:00 Sunday 1 6
|
|
2020-11-11 12:12:12 Wednesday 4 2
|
|
2020-12-31 12:34:56 Thursday 5 3
|
|
2017-02-01 12:12:12 Wednesday 4 2
|
|
SELECT t1_d, DAYNAME(t1_d), DAYOFWEEK(t1_d), WEEKDAY(t1_d) FROM t1;
|
|
t1_d DAYNAME(t1_d) DAYOFWEEK(t1_d) WEEKDAY(t1_d)
|
|
NULL NULL NULL NULL
|
|
0000-00-00 Sunday 1 6
|
|
2222-11-11 Monday 2 0
|
|
2020-01-01 Wednesday 4 2
|
|
2016-02-01 Monday 2 0
|
|
SELECT t1_dt, EXTRACT(SECOND FROM t1_dt) 'SECOND', EXTRACT(DAY_HOUR FROM t1_dt) 'DAY_HOUR', EXTRACT(HOUR FROM t1_dt) 'HOUR', EXTRACT(MINUTE FROM t1_dt) 'MINUTE' FROM t1;
|
|
t1_dt SECOND DAY_HOUR HOUR MINUTE
|
|
NULL NULL NULL NULL NULL
|
|
0000-00-00 00:00:00 0 0 0 0
|
|
2020-11-11 12:12:12 12 1112 12 12
|
|
2020-12-31 12:34:56 56 3112 12 34
|
|
2017-02-01 12:12:12 12 112 12 12
|
|
SELECT t1_dt, EXTRACT(DAY FROM t1_dt) 'DAY', EXTRACT(YEAR FROM t1_dt) 'YEAR', EXTRACT(MONTH FROM t1_dt) 'MONTH', EXTRACT(WEEK FROM t1_dt) 'WEEK' FROM t1;
|
|
t1_dt DAY YEAR MONTH WEEK
|
|
NULL NULL NULL NULL NULL
|
|
0000-00-00 00:00:00 0 0 0 613566753
|
|
2020-11-11 12:12:12 11 2020 11 46
|
|
2020-12-31 12:34:56 31 2020 12 53
|
|
2017-02-01 12:12:12 1 2017 2 5
|
|
SELECT t1_dt, MONTH(t1_dt) FROM t1;
|
|
t1_dt MONTH(t1_dt)
|
|
NULL NULL
|
|
0000-00-00 00:00:00 0
|
|
2020-11-11 12:12:12 11
|
|
2020-12-31 12:34:56 12
|
|
2017-02-01 12:12:12 2
|
|
SELECT t1_dt, t1_t, TIMEDIFF(t1_dt, t1_t) FROM t1;
|
|
t1_dt t1_t TIMEDIFF(t1_dt, t1_t)
|
|
NULL NULL NULL
|
|
0000-00-00 00:00:00 00:00:00 NULL
|
|
2020-11-11 12:12:12 12:12:12 NULL
|
|
2020-12-31 12:34:56 11:11:11 NULL
|
|
2017-02-01 12:12:12 11:11:11 NULL
|
|
SELECT t1_dt, TIMEDIFF(t1_dt, '5555-11-11 12:58:11') FROM t1;
|
|
t1_dt TIMEDIFF(t1_dt, '5555-11-11 12:58:11')
|
|
NULL NULL
|
|
0000-00-00 00:00:00 -838:59:59
|
|
2020-11-11 12:12:12 -838:59:59
|
|
2020-12-31 12:34:56 -838:59:59
|
|
2017-02-01 12:12:12 -838:59:59
|
|
SELECT t1_t, TIMEDIFF('12:58:11', t1_t) FROM t1;
|
|
t1_t TIMEDIFF('12:58:11', t1_t)
|
|
NULL NULL
|
|
00:00:00 838:59:59
|
|
12:12:12 838:59:59
|
|
11:11:11 838:59:59
|
|
11:11:11 838:59:59
|
|
SELECT t1_d, t1_dt, TIMESTAMPDIFF(MONTH, t1_d, t1_dt) FROM t1;
|
|
t1_d t1_dt TIMESTAMPDIFF(MONTH, t1_d, t1_dt)
|
|
NULL NULL NULL
|
|
0000-00-00 0000-00-00 00:00:00 0
|
|
2222-11-11 2020-11-11 12:12:12 -2424
|
|
2020-01-01 2020-12-31 12:34:56 11
|
|
2016-02-01 2017-02-01 12:12:12 12
|
|
SELECT t1_d, t1_dt, TIMESTAMPDIFF(DAY, t1_d, t1_dt) FROM t1;
|
|
t1_d t1_dt TIMESTAMPDIFF(DAY, t1_d, t1_dt)
|
|
NULL NULL NULL
|
|
0000-00-00 0000-00-00 00:00:00 0
|
|
2222-11-11 2020-11-11 12:12:12 -73777
|
|
2020-01-01 2020-12-31 12:34:56 365
|
|
2016-02-01 2017-02-01 12:12:12 366
|
|
SELECT t1_d, t1_dt, TIMESTAMPDIFF(MINUTE, t1_d, t1_dt) FROM t1;
|
|
t1_d t1_dt TIMESTAMPDIFF(MINUTE, t1_d, t1_dt)
|
|
NULL NULL NULL
|
|
0000-00-00 0000-00-00 00:00:00 0
|
|
2222-11-11 2020-11-11 12:12:12 -106239587
|
|
2020-01-01 2020-12-31 12:34:56 526354
|
|
2016-02-01 2017-02-01 12:12:12 527772
|
|
SELECT t1_d, t1_dt, TIMESTAMPDIFF(SECOND, t1_d, t1_dt) FROM t1;
|
|
t1_d t1_dt TIMESTAMPDIFF(SECOND, t1_d, t1_dt)
|
|
NULL NULL NULL
|
|
0000-00-00 0000-00-00 00:00:00 0
|
|
2222-11-11 2020-11-11 12:12:12 -6374375268
|
|
2020-01-01 2020-12-31 12:34:56 31581296
|
|
2016-02-01 2017-02-01 12:12:12 31666332
|
|
SELECT t1_d, WEEK(t1_d), t1_dt, WEEK(t1_dt) FROM t1;
|
|
t1_d WEEK(t1_d) t1_dt WEEK(t1_dt)
|
|
NULL NULL NULL NULL
|
|
0000-00-00 613566753 0000-00-00 00:00:00 613566753
|
|
2222-11-11 45 2020-11-11 12:12:12 45
|
|
2020-01-01 0 2020-12-31 12:34:56 52
|
|
2016-02-01 5 2017-02-01 12:12:12 5
|
|
SELECT t1_d, YEAR(t1_d), t1_dt, YEAR(t1_dt) FROM t1;
|
|
t1_d YEAR(t1_d) t1_dt YEAR(t1_dt)
|
|
NULL NULL NULL NULL
|
|
0000-00-00 0 0000-00-00 00:00:00 0
|
|
2222-11-11 2222 2020-11-11 12:12:12 2020
|
|
2020-01-01 2020 2020-12-31 12:34:56 2020
|
|
2016-02-01 2016 2017-02-01 12:12:12 2017
|
|
DROP DATABASE mcs92_db;
|