MySql教程

MySQL 日期和时间函数

本文主要是介绍MySQL 日期和时间函数，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
名称描述
ADDDATE()将时间值（间隔）添加到日期值
ADDTIME()加时
CONVERT_TZ()从一个时区转换到另一个时区
CURDATE()返回当前日期
CURRENT_DATE(), CURRENT_DATECURDATE（）的同义词
CURRENT_TIME(), CURRENT_TIMECURTIME（）的同义词
CURRENT_TIMESTAMP(), CURRENT_TIMESTAMP现在的同义词
CURTIME()返回当前时间
DATE()提取日期或日期时间表达式的日期部分
DATE_ADD()将时间值（间隔）添加到日期值
DATE_FORMAT()按指定格式设置日期
DATE_SUB()从日期中减去时间值（间隔）
DATEDIFF()减去两个日期
DAY()DAYOFMONTH（）的同义词
DAYNAME()返回工作日的名称
DAYOFMONTH()返回当月的日期（0-31）
DAYOFWEEK()返回参数的工作日索引
DAYOFYEAR()返回一年中的某一天（1-366）
EXTRACT()提取日期的一部分
FROM_DAYS()将日数转换为日期
FROM_UNIXTIME()将Unix时间戳格式化为日期
GET_FORMAT()返回日期格式字符串
HOUR()抽出时间
LAST_DAY返回该参数当月的最后一天
LOCALTIME(), LOCALTIME现在的同义词
LOCALTIMESTAMP, LOCALTIMESTAMP()现在的同义词
MAKEDATE()从年份和日期创建日期
MAKETIME()从小时、分钟、秒创建时间
MICROSECOND()从参数返回微秒
MINUTE()返回辩论的分钟数
MONTH()返回从过去日期算起的月份
MONTHNAME()返回月份的名称
NOW()返回当前日期和时间
PERIOD_ADD()将期间添加到年-月
PERIOD_DIFF()返回期间之间的月数
QUARTER()从日期参数返回季度
SEC_TO_TIME()将秒转换为“hh:mm:ss”格式
SECOND()返回第二个（0-59）
STR_TO_DATE()将字符串转换为日期
SUBDATE()当使用三个参数调用时，DATE_SUB（）的同义词
SUBTIME()减去次数
SYSDATE()返回函数执行的时间
TIME()提取表达式经过的时间部分
TIME_FORMAT()格式随时间变化
TIME_TO_SEC()返回转换为秒的参数
TIMEDIFF()减去时间
TIMESTAMP()使用单个参数，此函数返回日期或日期时间表达式；对于两个参数，参数之和
TIMESTAMPADD()向日期时间表达式添加间隔
TIMESTAMPDIFF()从日期时间表达式中减去间隔
TO_DAYS()返回转换为天的日期参数
TO_SECONDS()返回从0年起转换为秒的日期或日期时间参数
UNIX_TIMESTAMP()返回Unix时间戳
UTC_DATE()返回当前UTC日期
UTC_TIME()返回当前UTC时间
UTC_TIMESTAMP()返回当前UTC日期和时间
WEEK()返回周数
WEEKDAY()返回工作日索引
WEEKOFYEAR()返回日期（1-53）的日历周
YEAR()返回年度
YEARWEEK()返回年度和周
SpecifierDescription
%aAbbreviated weekday name (Sun..Sat)
%bAbbreviated month name (Jan..Dec)
%cMonth, numeric (0..12)
%DDay of the month with English suffix (0th, 1st, 2nd, 3rd, …)
%dDay of the month, numeric (00..31)
%eDay of the month, numeric (0..31)
%fMicroseconds (000000..999999)
%HHour (00..23)
%hHour (01..12)
%IHour (01..12)
%iMinutes, numeric (00..59)
%jDay of year (001..366)
%kHour (0..23)
%lHour (1..12)
%MMonth name (January..December)
%mMonth, numeric (00..12)
%pAM or PM
%rTime, 12-hour (hh:mm:ss followed by AM or PM)
%SSeconds (00..59)
%sSeconds (00..59)
%TTime, 24-hour (hh:mm:ss)
%UWeek (00..53), where Sunday is the first day of the week; WEEK() mode 0
%uWeek (00..53), where Monday is the first day of the week; WEEK() mode 1
%VWeek (01..53), where Sunday is the first day of the week; WEEK() mode 2; used with %X
%vWeek (01..53), where Monday is the first day of the week; WEEK() mode 3; used with %x
%WWeekday name (Sunday..Saturday)
%wDay of the week (0=Sunday..6=Saturday)
%XYear for the week where Sunday is the first day of the week, numeric, four digits; used with %V
%xYear for the week, where Monday is the first day of the week, numeric, four digits; used with %v
%YYear, numeric, four digits
%yYear, numeric (two digits)
%%A literal % character
%xx, for any “x” not listed above
Function CallResult
GET_FORMAT(DATE,'USA')'%m.%d.%Y'
GET_FORMAT(DATE,'JIS')'%Y-%m-%d'
GET_FORMAT(DATE,'ISO')'%Y-%m-%d'
GET_FORMAT(DATE,'EUR')'%d.%m.%Y'
GET_FORMAT(DATE,'INTERNAL')'%Y%m%d'
GET_FORMAT(DATETIME,'USA')'%Y-%m-%d %H.%i.%s'
GET_FORMAT(DATETIME,'JIS')'%Y-%m-%d %H:%i:%s'
GET_FORMAT(DATETIME,'ISO')'%Y-%m-%d %H:%i:%s'
GET_FORMAT(DATETIME,'EUR')'%Y-%m-%d %H.%i.%s'
GET_FORMAT(DATETIME,'INTERNAL')'%Y%m%d%H%i%s'
GET_FORMAT(TIME,'USA')'%h:%i:%s %p'
GET_FORMAT(TIME,'JIS')'%H:%i:%s'
GET_FORMAT(TIME,'ISO')'%H:%i:%s'
GET_FORMAT(TIME,'EUR')'%H.%i.%s'
GET_FORMAT(TIME,'INTERNAL')'%H%i%s'
ModeFirst day of weekRangeWeek 1 is the first week …
0Sunday0-53with a Sunday in this year
1Monday0-53with 4 or more days this year
2Sunday1-53with a Sunday in this year
3Monday1-53with 4 or more days this year
4Sunday0-53with 4 or more days this year
5Monday0-53with a Monday in this year
6Sunday1-53with 4 or more days this year
7Monday1-53with a Monday in this year
mysql> SELECT DAYOFMONTH('2001-11-00'), MONTH('2005-00-00');
        -> 0, 0

mysql> SELECT DATE_ADD('2006-05-00',INTERVAL 1 DAY);
        -> NULL

mysql> SELECT DAYNAME('2006-05-00');
        -> NULL

mysql> SELECT DATE_ADD('2008-01-02', INTERVAL 31 DAY);
        -> '2008-02-02'

mysql> SELECT ADDDATE('2008-01-02', INTERVAL 31 DAY);
        -> '2008-02-02'
mysql> SELECT ADDDATE('2008-01-02', 31);
        -> '2008-02-02'

mysql> SELECT ADDTIME('2007-12-31 23:59:59.999999', '1 1:1:1.000002');
        -> '2008-01-02 01:01:01.000001'
mysql> SELECT ADDTIME('01:00:00.999999', '02:00:00.999998');
        -> '03:00:01.999997'

mysql> SELECT CONVERT_TZ('2004-01-01 12:00:00','GMT','MET');
        -> '2004-01-01 13:00:00'
mysql> SELECT CONVERT_TZ('2004-01-01 12:00:00','+00:00','+10:00');
        -> '2004-01-01 22:00:00'

mysql> SELECT CURDATE();
        -> '2008-06-13'
mysql> SELECT CURDATE() + 0;
        -> 20080613

mysql> SELECT CURTIME();
        -> '23:50:26'
mysql> SELECT CURTIME() + 0;
        -> 235026.000000

mysql> SELECT DATE('2003-12-31 01:02:03');
        -> '2003-12-31'

mysql> SELECT DATEDIFF('2007-12-31 23:59:59','2007-12-30');
        -> 1
mysql> SELECT DATEDIFF('2010-11-30 23:59:59','2010-12-31');
        -> -31

mysql> SELECT DATE_ADD('2018-05-01',INTERVAL 1 DAY);
        -> '2018-05-02'
mysql> SELECT DATE_SUB('2018-05-01',INTERVAL 1 YEAR);
        -> '2017-05-01'
mysql> SELECT DATE_ADD('2020-12-31 23:59:59',
    ->                 INTERVAL 1 SECOND);
        -> '2021-01-01 00:00:00'
mysql> SELECT DATE_ADD('2018-12-31 23:59:59',
    ->                 INTERVAL 1 DAY);
        -> '2019-01-01 23:59:59'
mysql> SELECT DATE_ADD('2100-12-31 23:59:59',
    ->                 INTERVAL '1:1' MINUTE_SECOND);
        -> '2101-01-01 00:01:00'
mysql> SELECT DATE_SUB('2025-01-01 00:00:00',
    ->                 INTERVAL '1 1:1:1' DAY_SECOND);
        -> '2024-12-30 22:58:59'
mysql> SELECT DATE_ADD('1900-01-01 00:00:00',
    ->                 INTERVAL '-1 10' DAY_HOUR);
        -> '1899-12-30 14:00:00'
mysql> SELECT DATE_SUB('1998-01-02', INTERVAL 31 DAY);
        -> '1997-12-02'
mysql> SELECT DATE_ADD('1992-12-31 23:59:59.000002',
    ->            INTERVAL '1.999999' SECOND_MICROSECOND);
        -> '1993-01-01 00:00:01.000001'

mysql> SELECT DATE_FORMAT('2009-10-04 22:23:00', '%W %M %Y');
        -> 'Sunday October 2009'
mysql> SELECT DATE_FORMAT('2007-10-04 22:23:00', '%H:%i:%s');
        -> '22:23:00'
mysql> SELECT DATE_FORMAT('1900-10-04 22:23:00',
    ->                 '%D %y %a %d %m %b %j');
        -> '4th 00 Thu 04 10 Oct 277'
mysql> SELECT DATE_FORMAT('1997-10-04 22:23:00',
    ->                 '%H %k %I %r %T %S %w');
        -> '22 22 10 10:23:00 PM 22:23:00 00 6'
mysql> SELECT DATE_FORMAT('1999-01-01', '%X %V');
        -> '1998 52'
mysql> SELECT DATE_FORMAT('2006-06-00', '%d');
        -> '00'

mysql> SELECT DAYNAME('2007-02-03');
        -> 'Saturday'

mysql> SELECT DAYOFMONTH('2007-02-03');
        -> 3

mysql> SELECT DAYOFWEEK('2007-02-03');
        -> 7

mysql> SELECT DAYOFYEAR('2007-02-03');
        -> 34

mysql> SELECT EXTRACT(YEAR FROM '2019-07-02');
        -> 2019
mysql> SELECT EXTRACT(YEAR_MONTH FROM '2019-07-02 01:02:03');
        -> 201907
mysql> SELECT EXTRACT(DAY_MINUTE FROM '2019-07-02 01:02:03');
        -> 20102
mysql> SELECT EXTRACT(MICROSECOND
    ->                FROM '2003-01-02 10:30:00.000123');
        -> 123

mysql> SELECT FROM_DAYS(730669);
        -> '2000-07-03'

mysql> SELECT FROM_UNIXTIME(1447430881);
        -> '2015-11-13 10:08:01'
mysql> SELECT FROM_UNIXTIME(1447430881) + 0;
        -> 20151113100801
mysql> SELECT FROM_UNIXTIME(1447430881,
    ->                      '%Y %D %M %h:%i:%s %x');
        -> '2015 13th November 10:08:01 2015'

mysql> SELECT DATE_FORMAT('2003-10-03',GET_FORMAT(DATE,'EUR'));
        -> '03.10.2003'
mysql> SELECT STR_TO_DATE('10.31.2003',GET_FORMAT(DATE,'USA'));
        -> '2003-10-31'

mysql> SELECT HOUR('10:05:03');
        -> 10
mysql> SELECT HOUR('272:59:59');
        -> 272

mysql> SELECT LAST_DAY('2003-02-05');
        -> '2003-02-28'
mysql> SELECT LAST_DAY('2004-02-05');
        -> '2004-02-29'
mysql> SELECT LAST_DAY('2004-01-01 01:01:01');
        -> '2004-01-31'
mysql> SELECT LAST_DAY('2003-03-32');
        -> NULL

mysql> SELECT MAKEDATE(2011,31), MAKEDATE(2011,32);
        -> '2011-01-31', '2011-02-01'
mysql> SELECT MAKEDATE(2011,365), MAKEDATE(2014,365);
        -> '2011-12-31', '2014-12-31'
mysql> SELECT MAKEDATE(2011,0);
        -> NULL

mysql> SELECT MAKETIME(12,15,30);
        -> '12:15:30'

mysql> SELECT MICROSECOND('12:00:00.123456');
        -> 123456
mysql> SELECT MICROSECOND('2019-12-31 23:59:59.000010');
        -> 10

mysql> SELECT MINUTE('2008-02-03 10:05:03');
        -> 5

mysql> SELECT MONTH('2008-02-03');
        -> 2

mysql> SELECT MONTHNAME('2008-02-03');
        -> 'February'

mysql> SELECT NOW();
        -> '2007-12-15 23:50:26'
mysql> SELECT NOW() + 0;
        -> 20071215235026.000000

mysql> SELECT NOW(), SLEEP(2), NOW();
+---------------------+----------+---------------------+
| NOW()               | SLEEP(2) | NOW()               |
+---------------------+----------+---------------------+
| 2006-04-12 13:47:36 |        0 | 2006-04-12 13:47:36 |
+---------------------+----------+---------------------+

mysql> SELECT SYSDATE(), SLEEP(2), SYSDATE();
+---------------------+----------+---------------------+
| SYSDATE()           | SLEEP(2) | SYSDATE()           |
+---------------------+----------+---------------------+
| 2006-04-12 13:47:44 |        0 | 2006-04-12 13:47:46 |
+---------------------+----------+---------------------+

mysql> SELECT PERIOD_ADD(200801,2);
        -> 200803

mysql> SELECT PERIOD_DIFF(200802,200703);
        -> 11

mysql> SELECT QUARTER('2008-04-01');
        -> 2

mysql> SELECT SECOND('10:05:03');
        -> 3

mysql> SELECT SEC_TO_TIME(2378);
        -> '00:39:38'
mysql> SELECT SEC_TO_TIME(2378) + 0;
        -> 3938

mysql> SELECT SEC_TO_TIME(2378);
        -> '00:39:38'
mysql> SELECT SEC_TO_TIME(2378) + 0;
        -> 3938

mysql> SELECT STR_TO_DATE('01,5,2013','%d,%m,%Y');
        -> '2013-05-01'
mysql> SELECT STR_TO_DATE('May 1, 2013','%M %d,%Y');
        -> '2013-05-01'

mysql> SELECT STR_TO_DATE('a09:30:17','a%h:%i:%s');
        -> '09:30:17'
mysql> SELECT STR_TO_DATE('a09:30:17','%h:%i:%s');
        -> NULL
mysql> SELECT STR_TO_DATE('09:30:17a','%h:%i:%s');
        -> '09:30:17'

mysql> SELECT STR_TO_DATE('abc','abc');
        -> '0000-00-00'
mysql> SELECT STR_TO_DATE('9','%m');
        -> '0000-09-00'
mysql> SELECT STR_TO_DATE('9','%s');
        -> '00:00:09'

mysql> SELECT STR_TO_DATE('00/00/0000', '%m/%d/%Y');
        -> '0000-00-00'
mysql> SELECT STR_TO_DATE('04/31/2004', '%m/%d/%Y');
        -> '2004-04-31'

mysql> SET sql_mode = '';
mysql> SELECT STR_TO_DATE('00/00/0000', '%m/%d/%Y');
+---------------------------------------+
| STR_TO_DATE('00/00/0000', '%m/%d/%Y') |
+---------------------------------------+
| 0000-00-00                            |
+---------------------------------------+
mysql> SET sql_mode = 'NO_ZERO_DATE';
mysql> SELECT STR_TO_DATE('00/00/0000', '%m/%d/%Y');
+---------------------------------------+
| STR_TO_DATE('00/00/0000', '%m/%d/%Y') |
+---------------------------------------+
| NULL                                  |
+---------------------------------------+
mysql> SHOW WARNINGS\G
*************************** 1. row ***************************
  Level: Warning
   Code: 1411
Message: Incorrect datetime value: '00/00/0000' for function str_to_date

mysql> SELECT STR_TO_DATE('200442 Monday', '%X%V %W');
        -> '2004-10-18'

mysql> SELECT DATE_SUB('2008-01-02', INTERVAL 31 DAY);
        -> '2007-12-02'
mysql> SELECT SUBDATE('2008-01-02', INTERVAL 31 DAY);
        -> '2007-12-02'

mysql> SELECT SUBDATE('2008-01-02 12:00:00', 31);
        -> '2007-12-02 12:00:00'

mysql> SELECT SUBTIME('2007-12-31 23:59:59.999999','1 1:1:1.000002');
        -> '2007-12-30 22:58:58.999997'
mysql> SELECT SUBTIME('01:00:00.999999', '02:00:00.999998');
        -> '-00:59:59.999999'

mysql> SELECT NOW(), SLEEP(2), NOW();
+---------------------+----------+---------------------+
| NOW()               | SLEEP(2) | NOW()               |
+---------------------+----------+---------------------+
| 2006-04-12 13:47:36 |        0 | 2006-04-12 13:47:36 |
+---------------------+----------+---------------------+

mysql> SELECT SYSDATE(), SLEEP(2), SYSDATE();
+---------------------+----------+---------------------+
| SYSDATE()           | SLEEP(2) | SYSDATE()           |
+---------------------+----------+---------------------+
| 2006-04-12 13:47:44 |        0 | 2006-04-12 13:47:46 |
+---------------------+----------+---------------------+

mysql> SELECT TIME('2003-12-31 01:02:03');
        -> '01:02:03'
mysql> SELECT TIME('2003-12-31 01:02:03.000123');
        -> '01:02:03.000123'

mysql> SELECT TIMEDIFF('2000:01:01 00:00:00',
    ->                 '2000:01:01 00:00:00.000001');
        -> '-00:00:00.000001'
mysql> SELECT TIMEDIFF('2008-12-31 23:59:59.000001',
    ->                 '2008-12-30 01:01:01.000002');
        -> '46:58:57.999999'

mysql> SELECT TIMESTAMP('2003-12-31');
        -> '2003-12-31 00:00:00'
mysql> SELECT TIMESTAMP('2003-12-31 12:00:00','12:00:00');
        -> '2004-01-01 00:00:00'

mysql> SELECT TIMESTAMPADD(MINUTE,1,'2003-01-02');
        -> '2003-01-02 00:01:00'
mysql> SELECT TIMESTAMPADD(WEEK,1,'2003-01-02');
        -> '2003-01-09'

mysql> SELECT TIMESTAMPDIFF(MONTH,'2003-02-01','2003-05-01');
        -> 3
mysql> SELECT TIMESTAMPDIFF(YEAR,'2002-05-01','2001-01-01');
        -> -1
mysql> SELECT TIMESTAMPDIFF(MINUTE,'2003-02-01','2003-05-01 12:05:55');
        -> 128885

mysql> SELECT TIME_FORMAT('100:00:00', '%H %k %h %I %l');
        -> '100 100 04 04 4'

mysql> SELECT TIME_TO_SEC('22:23:00');
        -> 80580
mysql> SELECT TIME_TO_SEC('00:39:38');
        -> 2378

mysql> SELECT TO_DAYS(950501);
        -> 728779
mysql> SELECT TO_DAYS('2007-10-07');
        -> 733321

mysql> SELECT TO_DAYS('2008-10-07'), TO_DAYS('08-10-07');
        -> 733687, 733687

mysql> SELECT TO_DAYS('0000-00-00');
+-----------------------+
| to_days('0000-00-00') |
+-----------------------+
|                  NULL |
+-----------------------+
1 row in set, 1 warning (0.00 sec)

mysql> SHOW WARNINGS;
+---------+------+----------------------------------------+
| Level   | Code | Message                                |
+---------+------+----------------------------------------+
| Warning | 1292 | Incorrect datetime value: '0000-00-00' |
+---------+------+----------------------------------------+
1 row in set (0.00 sec)


mysql> SELECT TO_DAYS('0000-01-01');
+-----------------------+
| to_days('0000-01-01') |
+-----------------------+
|                     1 |
+-----------------------+
1 row in set (0.00 sec)

mysql> SELECT TO_SECONDS(950501);
        -> 62966505600
mysql> SELECT TO_SECONDS('2009-11-29');
        -> 63426672000
mysql> SELECT TO_SECONDS('2009-11-29 13:43:32');
        -> 63426721412
mysql> SELECT TO_SECONDS( NOW() );
        -> 63426721458

mysql> SELECT TO_SECONDS('0000-00-00');
+--------------------------+
| TO_SECONDS('0000-00-00') |
+--------------------------+
|                     NULL |
+--------------------------+
1 row in set, 1 warning (0.00 sec)

mysql> SHOW WARNINGS;
+---------+------+----------------------------------------+
| Level   | Code | Message                                |
+---------+------+----------------------------------------+
| Warning | 1292 | Incorrect datetime value: '0000-00-00' |
+---------+------+----------------------------------------+
1 row in set (0.00 sec)


mysql> SELECT TO_SECONDS('0000-01-01');
+--------------------------+
| TO_SECONDS('0000-01-01') |
+--------------------------+
|                    86400 |
+--------------------------+
1 row in set (0.00 sec)

mysql> SELECT UNIX_TIMESTAMP();
        -> 1447431666
mysql> SELECT UNIX_TIMESTAMP('2015-11-13 10:20:19');
        -> 1447431619
mysql> SELECT UNIX_TIMESTAMP('2015-11-13 10:20:19.012');
        -> 1447431619.012

mysql> SET time_zone = 'MET';
mysql> SELECT UNIX_TIMESTAMP('2005-03-27 03:00:00');
+---------------------------------------+
| UNIX_TIMESTAMP('2005-03-27 03:00:00') |
+---------------------------------------+
|                            1111885200 |
+---------------------------------------+
mysql> SELECT UNIX_TIMESTAMP('2005-03-27 02:00:00');
+---------------------------------------+
| UNIX_TIMESTAMP('2005-03-27 02:00:00') |
+---------------------------------------+
|                            1111885200 |
+---------------------------------------+
mysql> SELECT FROM_UNIXTIME(1111885200);
+---------------------------+
| FROM_UNIXTIME(1111885200) |
+---------------------------+
| 2005-03-27 03:00:00       |
+---------------------------+

mysql> SELECT UTC_DATE(), UTC_DATE() + 0;
        -> '2003-08-14', 20030814

mysql> SELECT UTC_TIME(), UTC_TIME() + 0;
        -> '18:07:53', 180753.000000

mysql> SELECT UTC_TIMESTAMP(), UTC_TIMESTAMP() + 0;
        -> '2003-08-14 18:08:04', 20030814180804.000000

mysql> SELECT WEEK('2008-02-20');
        -> 7
mysql> SELECT WEEK('2008-02-20',0);
        -> 7
mysql> SELECT WEEK('2008-02-20',1);
        -> 8
mysql> SELECT WEEK('2008-12-31',1);
        -> 53

mysql> SELECT YEAR('2000-01-01'), WEEK('2000-01-01',0);
        -> 2000, 0

mysql> SELECT WEEK('2000-01-01',2);
        -> 52

mysql> SELECT YEARWEEK('2000-01-01');
        -> 199952
mysql> SELECT MID(YEARWEEK('2000-01-01'),5,2);
        -> '52'

mysql> SELECT WEEKDAY('2008-02-03 22:23:00');
        -> 6
mysql> SELECT WEEKDAY('2007-11-06');
        -> 1

mysql> SELECT WEEKOFYEAR('2008-02-20');
        -> 8

mysql> SELECT YEAR('1987-01-01');
        -> 1987

mysql> SELECT YEARWEEK('1987-01-01');
        -> 198652
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