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Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
315 lines
12 KiB
315 lines
12 KiB
5 months ago
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drop table if exists t1, test;
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select extract(DAY_MICROSECOND FROM "1999-01-02 10:11:12.000123");
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extract(DAY_MICROSECOND FROM "1999-01-02 10:11:12.000123")
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2101112000123
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select extract(HOUR_MICROSECOND FROM "1999-01-02 10:11:12.000123");
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extract(HOUR_MICROSECOND FROM "1999-01-02 10:11:12.000123")
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101112000123
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select extract(MINUTE_MICROSECOND FROM "1999-01-02 10:11:12.000123");
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extract(MINUTE_MICROSECOND FROM "1999-01-02 10:11:12.000123")
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1112000123
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select extract(SECOND_MICROSECOND FROM "1999-01-02 10:11:12.000123");
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extract(SECOND_MICROSECOND FROM "1999-01-02 10:11:12.000123")
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12000123
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select extract(MICROSECOND FROM "1999-01-02 10:11:12.000123");
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extract(MICROSECOND FROM "1999-01-02 10:11:12.000123")
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123
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select date_format("1997-12-31 23:59:59.000002", "%f");
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date_format("1997-12-31 23:59:59.000002", "%f")
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000002
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select date_add("1997-12-31 23:59:59.000002",INTERVAL "10000 99:99:99.999999" DAY_MICROSECOND);
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date_add("1997-12-31 23:59:59.000002",INTERVAL "10000 99:99:99.999999" DAY_MICROSECOND)
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2025-05-23 04:40:39.000001
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select date_add("1997-12-31 23:59:59.000002",INTERVAL "10000:99:99.999999" HOUR_MICROSECOND);
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date_add("1997-12-31 23:59:59.000002",INTERVAL "10000:99:99.999999" HOUR_MICROSECOND)
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1999-02-21 17:40:39.000001
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select date_add("1997-12-31 23:59:59.000002",INTERVAL "10000:99.999999" MINUTE_MICROSECOND);
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date_add("1997-12-31 23:59:59.000002",INTERVAL "10000:99.999999" MINUTE_MICROSECOND)
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1998-01-07 22:41:39.000001
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select date_add("1997-12-31 23:59:59.000002",INTERVAL "10000.999999" SECOND_MICROSECOND);
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date_add("1997-12-31 23:59:59.000002",INTERVAL "10000.999999" SECOND_MICROSECOND)
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1998-01-01 02:46:40.000001
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select date_add("1997-12-31 23:59:59.000002",INTERVAL "999999" MICROSECOND);
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date_add("1997-12-31 23:59:59.000002",INTERVAL "999999" MICROSECOND)
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1998-01-01 00:00:00.000001
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "1 1:1:1.000002" DAY_MICROSECOND);
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date_sub("1998-01-01 00:00:00.000001",INTERVAL "1 1:1:1.000002" DAY_MICROSECOND)
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1997-12-30 22:58:58.999999
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "1:1:1.000002" HOUR_MICROSECOND);
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date_sub("1998-01-01 00:00:00.000001",INTERVAL "1:1:1.000002" HOUR_MICROSECOND)
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1997-12-31 22:58:58.999999
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "1:1.000002" MINUTE_MICROSECOND);
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date_sub("1998-01-01 00:00:00.000001",INTERVAL "1:1.000002" MINUTE_MICROSECOND)
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1997-12-31 23:58:58.999999
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "1.000002" SECOND_MICROSECOND);
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date_sub("1998-01-01 00:00:00.000001",INTERVAL "1.000002" SECOND_MICROSECOND)
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1997-12-31 23:59:58.999999
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select date_sub("1998-01-01 00:00:00.000001",INTERVAL "000002" MICROSECOND);
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date_sub("1998-01-01 00:00:00.000001",INTERVAL "000002" MICROSECOND)
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1997-12-31 23:59:59.999999
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select adddate("1997-12-31 23:59:59.000001", 10);
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adddate("1997-12-31 23:59:59.000001", 10)
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1998-01-10 23:59:59.000001
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select subdate("1997-12-31 23:59:59.000001", 10);
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subdate("1997-12-31 23:59:59.000001", 10)
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1997-12-21 23:59:59.000001
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select datediff("1997-12-31 23:59:59.000001","1997-12-30");
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datediff("1997-12-31 23:59:59.000001","1997-12-30")
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1
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select datediff("1997-11-30 23:59:59.000001","1997-12-31");
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datediff("1997-11-30 23:59:59.000001","1997-12-31")
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-31
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SET @@SQL_MODE="ALLOW_INVALID_DATES";
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select datediff("1997-11-31 23:59:59.000001","1997-12-31");
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datediff("1997-11-31 23:59:59.000001","1997-12-31")
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-30
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SET @@SQL_MODE="";
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select datediff("1997-11-31 23:59:59.000001","1997-12-31");
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datediff("1997-11-31 23:59:59.000001","1997-12-31")
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NULL
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Warnings:
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Warning 1292 Incorrect datetime value: '1997-11-31 23:59:59.000001'
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select datediff("1997-11-30 23:59:59.000001",null);
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datediff("1997-11-30 23:59:59.000001",null)
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NULL
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select weekofyear("1997-11-30 23:59:59.000001");
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weekofyear("1997-11-30 23:59:59.000001")
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48
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select makedate(03,1);
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makedate(03,1)
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2003-01-01
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select makedate('0003',1);
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makedate('0003',1)
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2003-01-01
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select makedate(1997,1);
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makedate(1997,1)
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1997-01-01
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select makedate(1997,0);
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makedate(1997,0)
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NULL
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select makedate(9999,365);
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makedate(9999,365)
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9999-12-31
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select makedate(9999,366);
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makedate(9999,366)
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NULL
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select makedate(100,1);
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makedate(100,1)
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0100-01-01
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select addtime("1997-12-31 23:59:59.999999", "1 1:1:1.000002");
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addtime("1997-12-31 23:59:59.999999", "1 1:1:1.000002")
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1998-01-02 01:01:01.000001
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select subtime("1997-12-31 23:59:59.000001", "1 1:1:1.000002");
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subtime("1997-12-31 23:59:59.000001", "1 1:1:1.000002")
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1997-12-30 22:58:57.999999
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select addtime("1997-12-31 23:59:59.999999", "1998-01-01 01:01:01.999999");
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addtime("1997-12-31 23:59:59.999999", "1998-01-01 01:01:01.999999")
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NULL
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select subtime("1997-12-31 23:59:59.999999", "1998-01-01 01:01:01.999999");
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subtime("1997-12-31 23:59:59.999999", "1998-01-01 01:01:01.999999")
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NULL
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select subtime("01:00:00.999999", "02:00:00.999998");
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subtime("01:00:00.999999", "02:00:00.999998")
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-00:59:59.999999
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select subtime("02:01:01.999999", "01:01:01.999999");
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subtime("02:01:01.999999", "01:01:01.999999")
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01:00:00
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select timediff("1997-01-01 23:59:59.000001","1995-12-31 23:59:59.000002");
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timediff("1997-01-01 23:59:59.000001","1995-12-31 23:59:59.000002")
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838:59:59.000000
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Warnings:
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Warning 1292 Truncated incorrect time value: '8807:59:59.999999'
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select timediff("1997-12-31 23:59:59.000001","1997-12-30 01:01:01.000002");
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timediff("1997-12-31 23:59:59.000001","1997-12-30 01:01:01.000002")
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46:58:57.999999
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select timediff("1997-12-30 23:59:59.000001","1997-12-31 23:59:59.000002");
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timediff("1997-12-30 23:59:59.000001","1997-12-31 23:59:59.000002")
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-24:00:00.000001
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select timediff("1997-12-31 23:59:59.000001","23:59:59.000001");
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timediff("1997-12-31 23:59:59.000001","23:59:59.000001")
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NULL
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select timediff("2000:01:01 00:00:00", "2000:01:01 00:00:00.000001");
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timediff("2000:01:01 00:00:00", "2000:01:01 00:00:00.000001")
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-00:00:00.000001
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select timediff("2005-01-11 15:48:49.999999", "2005-01-11 15:48:50");
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timediff("2005-01-11 15:48:49.999999", "2005-01-11 15:48:50")
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-00:00:00.000001
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select maketime(10,11,12);
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maketime(10,11,12)
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10:11:12
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select maketime(25,11,12);
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maketime(25,11,12)
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25:11:12
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select maketime(-25,11,12);
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maketime(-25,11,12)
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-25:11:12
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select timestamp("2001-12-01", "01:01:01.999999");
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timestamp("2001-12-01", "01:01:01.999999")
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2001-12-01 01:01:01.999999
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select timestamp("2001-13-01", "01:01:01.000001");
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timestamp("2001-13-01", "01:01:01.000001")
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NULL
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Warnings:
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Warning 1292 Incorrect datetime value: '2001-13-01'
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select timestamp("2001-12-01", "25:01:01");
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timestamp("2001-12-01", "25:01:01")
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2001-12-02 01:01:01
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select timestamp("2001-12-01 01:01:01.000100");
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timestamp("2001-12-01 01:01:01.000100")
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2001-12-01 01:01:01.000100
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select timestamp("2001-12-01");
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timestamp("2001-12-01")
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2001-12-01 00:00:00
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select day("1997-12-31 23:59:59.000001");
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day("1997-12-31 23:59:59.000001")
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31
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select date("1997-12-31 23:59:59.000001");
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date("1997-12-31 23:59:59.000001")
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1997-12-31
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select date("1997-13-31 23:59:59.000001");
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date("1997-13-31 23:59:59.000001")
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NULL
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Warnings:
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Warning 1292 Incorrect datetime value: '1997-13-31 23:59:59.000001'
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select time("1997-12-31 23:59:59.000001");
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time("1997-12-31 23:59:59.000001")
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23:59:59.000001
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select time("1997-12-31 25:59:59.000001");
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time("1997-12-31 25:59:59.000001")
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NULL
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Warnings:
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Warning 1292 Truncated incorrect time value: '1997-12-31 25:59:59.000001'
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select microsecond("1997-12-31 23:59:59.000001");
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microsecond("1997-12-31 23:59:59.000001")
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1
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create table t1
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select makedate(1997,1) as f1,
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addtime(cast("1997-12-31 23:59:59.000001" as datetime), "1 1:1:1.000002") as f2,
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addtime(cast("23:59:59.999999" as time) , "1 1:1:1.000002") as f3,
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timediff("1997-12-31 23:59:59.000001","1997-12-30 01:01:01.000002") as f4,
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timediff("1997-12-30 23:59:59.000001","1997-12-31 23:59:59.000002") as f5,
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maketime(10,11,12) as f6,
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timestamp(cast("2001-12-01" as date), "01:01:01") as f7,
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date("1997-12-31 23:59:59.000001") as f8,
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time("1997-12-31 23:59:59.000001") as f9;
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describe t1;
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Field Type Null Key Default Extra
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f1 date YES NULL
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f2 datetime(6) YES NULL
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f3 time(6) YES NULL
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f4 time(6) YES NULL
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f5 time(6) YES NULL
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f6 time YES NULL
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f7 datetime YES NULL
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f8 date YES NULL
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f9 time(6) YES NULL
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select * from t1;
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f1 f2 f3 f4 f5 f6 f7 f8 f9
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1997-01-01 1998-01-02 01:01:00.000002 49:01:01.000002 46:58:57.999999 -24:00:00.000001 10:11:12 2001-12-01 01:01:01 1997-12-31 23:59:59.000001
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create table test(t1 datetime, t2 time, t3 time, t4 datetime);
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insert into test values
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('2001-01-01 01:01:01', '01:01:01', null, '2001-02-01 01:01:01'),
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('2001-01-01 01:01:01', '-01:01:01', '-23:59:59', "1997-12-31 23:59:59.000001"),
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('1997-12-31 23:59:59.000001', '-23:59:59', '-01:01:01', '2001-01-01 01:01:01'),
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('2001-01-01 01:01:01', '01:01:01', '-1 01:01:01', null),
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('2001-01-01 01:01:01', '-01:01:01', '1 01:01:01', '2001-01-01 01:01:01'),
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('2001-01-01 01:01:01', null, '-1 01:01:01', null),
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(null, null, null, null),
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('2001-01-01 01:01:01', '01:01:01', '1 01:01:01', '2001-01-01 01:01:01');
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SELECT ADDTIME(t1,t2) As ttt, ADDTIME(t2, t3) As qqq from test;
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ttt qqq
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2001-01-01 02:02:02 NULL
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2001-01-01 00:00:00 -25:01:00
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1997-12-31 00:00:00 -25:01:00
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2001-01-01 02:02:02 -24:00:00
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2001-01-01 00:00:00 24:00:00
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NULL NULL
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NULL NULL
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2001-01-01 02:02:02 26:02:02
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SELECT TIMEDIFF(t1, t4) As ttt, TIMEDIFF(t2, t3) As qqq,
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TIMEDIFF(t3, t2) As eee, TIMEDIFF(t2, t4) As rrr from test;
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ttt qqq eee rrr
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-744:00:00 NULL NULL NULL
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838:59:59 22:58:58 -22:58:58 NULL
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-838:59:59 -22:58:58 22:58:58 NULL
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NULL 26:02:02 -26:02:02 NULL
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00:00:00 -26:02:02 26:02:02 NULL
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NULL NULL NULL NULL
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NULL NULL NULL NULL
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00:00:00 -24:00:00 24:00:00 NULL
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Warnings:
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Warning 1292 Truncated incorrect time value: '26305:01:02'
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Warning 1292 Truncated incorrect time value: '-26305:01:02'
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drop table t1, test;
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select addtime("-01:01:01.01", "-23:59:59.1") as a;
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a
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-25:01:00.110000
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select microsecond("1997-12-31 23:59:59.01") as a;
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a
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10000
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select microsecond(19971231235959.01) as a;
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a
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10000
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select date_add("1997-12-31",INTERVAL "10.09" SECOND_MICROSECOND) as a;
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a
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1997-12-31 00:00:10.090000
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select str_to_date("2003-01-02 10:11:12.0012", "%Y-%m-%d %H:%i:%S.%f");
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str_to_date("2003-01-02 10:11:12.0012", "%Y-%m-%d %H:%i:%S.%f")
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2003-01-02 10:11:12.001200
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select timediff('2008-09-29 20:10:10','2008-09-30 20:10:10'),time('00:00:00');
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timediff('2008-09-29 20:10:10','2008-09-30 20:10:10') time('00:00:00')
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-24:00:00 00:00:00
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select timediff('2008-09-29 20:10:10','2008-09-30 20:10:10')>time('00:00:00');
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timediff('2008-09-29 20:10:10','2008-09-30 20:10:10')>time('00:00:00')
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0
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select timediff('2008-09-29 20:10:10','2008-09-30 20:10:10')<time('00:00:00');
|
||
|
|
timediff('2008-09-29 20:10:10','2008-09-30 20:10:10')<time('00:00:00')
|
||
|
|
1
|
||
|
|
SELECT CAST(time('-73:42:12') AS DECIMAL);
|
||
|
|
CAST(time('-73:42:12') AS DECIMAL)
|
||
|
|
-734212
|
||
|
|
SELECT TIMEDIFF(TIME('17:00:00'),TIME('17:00:00'))=TIME('00:00:00') AS 1Eq,
|
||
|
|
TIMEDIFF(TIME('17:59:00'),TIME('17:00:00'))=TIME('00:00:00') AS 1NEq1,
|
||
|
|
TIMEDIFF(TIME('18:00:00'),TIME('17:00:00'))=TIME('00:00:00') AS 1NEq2,
|
||
|
|
TIMEDIFF(TIME('17:00:00'),TIME('17:00:00'))= '00:00:00' AS 2Eq,
|
||
|
|
TIMEDIFF(TIME('17:59:00'),TIME('17:00:00'))= '00:00:00' AS 2NEq1,
|
||
|
|
TIMEDIFF(TIME('18:00:00'),TIME('17:00:00'))= '00:00:00' AS 2NEq2,
|
||
|
|
TIMEDIFF(TIME('17:00:00'),TIME('17:00:00'))=TIME(0) AS 3Eq,
|
||
|
|
TIMEDIFF(TIME('17:59:00'),TIME('17:00:00'))=TIME(0) AS 3NEq1,
|
||
|
|
TIMEDIFF(TIME('18:00:00'),TIME('17:00:00'))=TIME(0) AS 3NEq2,
|
||
|
|
TIME(0) AS Time0, TIME('00:00:00') AS Time00, '00:00:00' AS Literal0000,
|
||
|
|
TIMEDIFF(TIME('17:59:00'),TIME('17:00:00')),
|
||
|
|
TIMEDIFF(TIME('17:00:00'),TIME('17:59:00'));
|
||
|
|
1Eq 1NEq1 1NEq2 2Eq 2NEq1 2NEq2 3Eq 3NEq1 3NEq2 Time0 Time00 Literal0000 TIMEDIFF(TIME('17:59:00'),TIME('17:00:00')) TIMEDIFF(TIME('17:00:00'),TIME('17:59:00'))
|
||
|
|
1 0 0 1 0 0 1 0 0 00:00:00 00:00:00 00:00:00 00:59:00 -00:59:00
|
||
|
|
SELECT sec_to_time(3020399)=TIME('838:59:59');
|
||
|
|
sec_to_time(3020399)=TIME('838:59:59')
|
||
|
|
1
|
||
|
|
SELECT sec_to_time(-3020399)=TIME('-838:59:59');
|
||
|
|
sec_to_time(-3020399)=TIME('-838:59:59')
|
||
|
|
1
|
||
|
|
SELECT sec_to_time(-3020399)='-838:59:59';
|
||
|
|
sec_to_time(-3020399)='-838:59:59'
|
||
|
|
1
|
||
|
|
SELECT time(sec_to_time(-3020399))=TIME('-838:59:59');
|
||
|
|
time(sec_to_time(-3020399))=TIME('-838:59:59')
|
||
|
|
1
|
||
|
|
SELECT time(sec_to_time(-3020399))=TIME('-838:59:58');
|
||
|
|
time(sec_to_time(-3020399))=TIME('-838:59:58')
|
||
|
|
0
|
||
|
|
SELECT maketime(-1,0,1)='-01:00:01';
|
||
|
|
maketime(-1,0,1)='-01:00:01'
|
||
|
|
1
|
||
|
|
SELECT TIME(maketime(-1,0,1))=CAST('-01:00:01' AS TIME);
|
||
|
|
TIME(maketime(-1,0,1))=CAST('-01:00:01' AS TIME)
|
||
|
|
1
|
||
|
|
SELECT maketime(-1,0,1)=CAST('-01:00:01' AS TIME);
|
||
|
|
maketime(-1,0,1)=CAST('-01:00:01' AS TIME)
|
||
|
|
1
|
||
|
|
SELECT maketime(1,0,1)=CAST('01:00:01' AS TIME);
|
||
|
|
maketime(1,0,1)=CAST('01:00:01' AS TIME)
|
||
|
|
1
|
||
|
|
SELECT maketime(1,0,1)=CAST('01:00:02' AS TIME);
|
||
|
|
maketime(1,0,1)=CAST('01:00:02' AS TIME)
|
||
|
|
0
|