func_time.result
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:31k
- drop table if exists t1,t2,t3;
- select from_days(to_days("960101")),to_days(960201)-to_days("19960101"),to_days(date_add(curdate(), interval 1 day))-to_days(curdate()),weekday("1997-11-29");
- from_days(to_days("960101")) to_days(960201)-to_days("19960101") to_days(date_add(curdate(), interval 1 day))-to_days(curdate()) weekday("1997-11-29")
- 1996-01-01 31 1 5
- select period_add("9602",-12),period_diff(199505,"9404") ;
- period_add("9602",-12) period_diff(199505,"9404")
- 199502 13
- select now()-now(),weekday(curdate())-weekday(now()),unix_timestamp()-unix_timestamp(now());
- now()-now() weekday(curdate())-weekday(now()) unix_timestamp()-unix_timestamp(now())
- 0 0 0
- select from_unixtime(unix_timestamp("1994-03-02 10:11:12")),from_unixtime(unix_timestamp("1994-03-02 10:11:12"),"%Y-%m-%d %h:%i:%s"),from_unixtime(unix_timestamp("1994-03-02 10:11:12"))+0;
- from_unixtime(unix_timestamp("1994-03-02 10:11:12")) from_unixtime(unix_timestamp("1994-03-02 10:11:12"),"%Y-%m-%d %h:%i:%s") from_unixtime(unix_timestamp("1994-03-02 10:11:12"))+0
- 1994-03-02 10:11:12 1994-03-02 10:11:12 19940302101112
- select sec_to_time(9001),sec_to_time(9001)+0,time_to_sec("15:12:22"),
- sec_to_time(time_to_sec("0:30:47")/6.21);
- sec_to_time(9001) sec_to_time(9001)+0 time_to_sec("15:12:22") sec_to_time(time_to_sec("0:30:47")/6.21)
- 02:30:01 23001 54742 00:04:57
- select sec_to_time(time_to_sec('-838:59:59'));
- sec_to_time(time_to_sec('-838:59:59'))
- -838:59:59
- select now()-curdate()*1000000-curtime();
- now()-curdate()*1000000-curtime()
- 0
- select strcmp(current_timestamp(),concat(current_date()," ",current_time()));
- strcmp(current_timestamp(),concat(current_date()," ",current_time()))
- 0
- select strcmp(localtime(),concat(current_date()," ",current_time()));
- strcmp(localtime(),concat(current_date()," ",current_time()))
- 0
- select strcmp(localtimestamp(),concat(current_date()," ",current_time()));
- strcmp(localtimestamp(),concat(current_date()," ",current_time()))
- 0
- select date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w");
- date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w")
- January Thursday 2nd 1997 97 01 02 03 04 05 4
- select date_format("1997-01-02", concat("%M %W %D ","%Y %y %m %d %h %i %s %w"));
- date_format("1997-01-02", concat("%M %W %D ","%Y %y %m %d %h %i %s %w"))
- January Thursday 2nd 1997 97 01 02 12 00 00 4
- select dayofmonth("1997-01-02"),dayofmonth(19970323);
- dayofmonth("1997-01-02") dayofmonth(19970323)
- 2 23
- select month("1997-01-02"),year("98-02-03"),dayofyear("1997-12-31");
- month("1997-01-02") year("98-02-03") dayofyear("1997-12-31")
- 1 1998 365
- select month("2001-02-00"),year("2001-00-00");
- month("2001-02-00") year("2001-00-00")
- 2 2001
- select DAYOFYEAR("1997-03-03"), WEEK("1998-03-03"), QUARTER(980303);
- DAYOFYEAR("1997-03-03") WEEK("1998-03-03") QUARTER(980303)
- 62 9 1
- select HOUR("1997-03-03 23:03:22"), MINUTE("23:03:22"), SECOND(230322);
- HOUR("1997-03-03 23:03:22") MINUTE("23:03:22") SECOND(230322)
- 23 3 22
- select week(19980101),week(19970101),week(19980101,1),week(19970101,1);
- week(19980101) week(19970101) week(19980101,1) week(19970101,1)
- 0 0 1 1
- select week(19981231),week(19971231),week(19981231,1),week(19971231,1);
- week(19981231) week(19971231) week(19981231,1) week(19971231,1)
- 52 52 53 53
- select week(19950101),week(19950101,1);
- week(19950101) week(19950101,1)
- 1 0
- select yearweek('1981-12-31',1),yearweek('1982-01-01',1),yearweek('1982-12-31',1),yearweek('1983-01-01',1);
- yearweek('1981-12-31',1) yearweek('1982-01-01',1) yearweek('1982-12-31',1) yearweek('1983-01-01',1)
- 198153 198153 198252 198252
- select yearweek('1987-01-01',1),yearweek('1987-01-01');
- yearweek('1987-01-01',1) yearweek('1987-01-01')
- 198701 198652
- select week("2000-01-01",0) as '2000', week("2001-01-01",0) as '2001', week("2002-01-01",0) as '2002',week("2003-01-01",0) as '2003', week("2004-01-01",0) as '2004', week("2005-01-01",0) as '2005', week("2006-01-01",0) as '2006';
- 2000 2001 2002 2003 2004 2005 2006
- 0 0 0 0 0 0 1
- select week("2000-01-06",0) as '2000', week("2001-01-06",0) as '2001', week("2002-01-06",0) as '2002',week("2003-01-06",0) as '2003', week("2004-01-06",0) as '2004', week("2005-01-06",0) as '2005', week("2006-01-06",0) as '2006';
- 2000 2001 2002 2003 2004 2005 2006
- 1 0 1 1 1 1 1
- select week("2000-01-01",1) as '2000', week("2001-01-01",1) as '2001', week("2002-01-01",1) as '2002',week("2003-01-01",1) as '2003', week("2004-01-01",1) as '2004', week("2005-01-01",1) as '2005', week("2006-01-01",1) as '2006';
- 2000 2001 2002 2003 2004 2005 2006
- 0 1 1 1 1 0 0
- select week("2000-01-06",1) as '2000', week("2001-01-06",1) as '2001', week("2002-01-06",1) as '2002',week("2003-01-06",1) as '2003', week("2004-01-06",1) as '2004', week("2005-01-06",1) as '2005', week("2006-01-06",1) as '2006';
- 2000 2001 2002 2003 2004 2005 2006
- 1 1 1 2 2 1 1
- select yearweek("2000-01-01",0) as '2000', yearweek("2001-01-01",0) as '2001', yearweek("2002-01-01",0) as '2002',yearweek("2003-01-01",0) as '2003', yearweek("2004-01-01",0) as '2004', yearweek("2005-01-01",0) as '2005', yearweek("2006-01-01",0) as '2006';
- 2000 2001 2002 2003 2004 2005 2006
- 199952 200053 200152 200252 200352 200452 200601
- select yearweek("2000-01-06",0) as '2000', yearweek("2001-01-06",0) as '2001', yearweek("2002-01-06",0) as '2002',yearweek("2003-01-06",0) as '2003', yearweek("2004-01-06",0) as '2004', yearweek("2005-01-06",0) as '2005', yearweek("2006-01-06",0) as '2006';
- 2000 2001 2002 2003 2004 2005 2006
- 200001 200053 200201 200301 200401 200501 200601
- select yearweek("2000-01-01",1) as '2000', yearweek("2001-01-01",1) as '2001', yearweek("2002-01-01",1) as '2002',yearweek("2003-01-01",1) as '2003', yearweek("2004-01-01",1) as '2004', yearweek("2005-01-01",1) as '2005', yearweek("2006-01-01",1) as '2006';
- 2000 2001 2002 2003 2004 2005 2006
- 199952 200101 200201 200301 200401 200453 200552
- select yearweek("2000-01-06",1) as '2000', yearweek("2001-01-06",1) as '2001', yearweek("2002-01-06",1) as '2002',yearweek("2003-01-06",1) as '2003', yearweek("2004-01-06",1) as '2004', yearweek("2005-01-06",1) as '2005', yearweek("2006-01-06",1) as '2006';
- 2000 2001 2002 2003 2004 2005 2006
- 200001 200101 200201 200302 200402 200501 200601
- select week(19981231,2), week(19981231,3), week(20000101,2), week(20000101,3);
- week(19981231,2) week(19981231,3) week(20000101,2) week(20000101,3)
- 52 53 52 52
- select week(20001231,2),week(20001231,3);
- week(20001231,2) week(20001231,3)
- 53 52
- select week(19981231,0) as '0', week(19981231,1) as '1', week(19981231,2) as '2', week(19981231,3) as '3', week(19981231,4) as '4', week(19981231,5) as '5', week(19981231,6) as '6', week(19981231,7) as '7';
- 0 1 2 3 4 5 6 7
- 52 53 52 53 52 52 52 52
- select week(20000101,0) as '0', week(20000101,1) as '1', week(20000101,2) as '2', week(20000101,3) as '3', week(20000101,4) as '4', week(20000101,5) as '5', week(20000101,6) as '6', week(20000101,7) as '7';
- 0 1 2 3 4 5 6 7
- 0 0 52 52 0 0 52 52
- select week(20000106,0) as '0', week(20000106,1) as '1', week(20000106,2) as '2', week(20000106,3) as '3', week(20000106,4) as '4', week(20000106,5) as '5', week(20000106,6) as '6', week(20000106,7) as '7';
- 0 1 2 3 4 5 6 7
- 1 1 1 1 1 1 1 1
- select week(20001231,0) as '0', week(20001231,1) as '1', week(20001231,2) as '2', week(20001231,3) as '3', week(20001231,4) as '4', week(20001231,5) as '5', week(20001231,6) as '6', week(20001231,7) as '7';
- 0 1 2 3 4 5 6 7
- 53 52 53 52 53 52 1 52
- select week(20010101,0) as '0', week(20010101,1) as '1', week(20010101,2) as '2', week(20010101,3) as '3', week(20010101,4) as '4', week(20010101,5) as '5', week(20010101,6) as '6', week(20010101,7) as '7';
- 0 1 2 3 4 5 6 7
- 0 1 53 1 1 1 1 1
- select yearweek(20001231,0), yearweek(20001231,1), yearweek(20001231,2), yearweek(20001231,3), yearweek(20001231,4), yearweek(20001231,5), yearweek(20001231,6), yearweek(20001231,7);
- yearweek(20001231,0) yearweek(20001231,1) yearweek(20001231,2) yearweek(20001231,3) yearweek(20001231,4) yearweek(20001231,5) yearweek(20001231,6) yearweek(20001231,7)
- 200053 200052 200053 200052 200101 200052 200101 200052
- set default_week_format = 6;
- select week(20001231), week(20001231,6);
- week(20001231) week(20001231,6)
- 1 1
- set default_week_format = 0;
- set default_week_format = 2;
- select week(20001231),week(20001231,2),week(20001231,0);
- week(20001231) week(20001231,2) week(20001231,0)
- 53 53 53
- set default_week_format = 0;
- select date_format('1998-12-31','%x-%v'),date_format('1999-01-01','%x-%v');
- date_format('1998-12-31','%x-%v') date_format('1999-01-01','%x-%v')
- 1998-53 1998-53
- select date_format('1999-12-31','%x-%v'),date_format('2000-01-01','%x-%v');
- date_format('1999-12-31','%x-%v') date_format('2000-01-01','%x-%v')
- 1999-52 1999-52
- select dayname("1962-03-03"),dayname("1962-03-03")+0;
- dayname("1962-03-03") dayname("1962-03-03")+0
- Saturday 5
- select monthname("1972-03-04"),monthname("1972-03-04")+0;
- monthname("1972-03-04") monthname("1972-03-04")+0
- March 3
- select time_format(19980131000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
- time_format(19980131000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
- 00|12|0|12|00|AM|12:00:00 AM|00|00:00:00
- select time_format(19980131010203,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
- time_format(19980131010203,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
- 01|01|1|1|02|AM|01:02:03 AM|03|01:02:03
- select time_format(19980131131415,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
- time_format(19980131131415,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
- 13|01|13|1|14|PM|01:14:15 PM|15|13:14:15
- select time_format(19980131010015,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
- time_format(19980131010015,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
- 01|01|1|1|00|AM|01:00:15 AM|15|01:00:15
- select date_format(concat('19980131',131415),'%H|%I|%k|%l|%i|%p|%r|%S|%T| %M|%W|%D|%Y|%y|%a|%b|%j|%m|%d|%h|%s|%w');
- date_format(concat('19980131',131415),'%H|%I|%k|%l|%i|%p|%r|%S|%T| %M|%W|%D|%Y|%y|%a|%b|%j|%m|%d|%h|%s|%w')
- 13|01|13|1|14|PM|01:14:15 PM|15|13:14:15| January|Saturday|31st|1998|98|Sat|Jan|031|01|31|01|15|6
- select date_format(19980021000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T| %M|%W|%D|%Y|%y|%a|%b|%j|%m|%d|%h|%s|%w');
- date_format(19980021000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T| %M|%W|%D|%Y|%y|%a|%b|%j|%m|%d|%h|%s|%w')
- NULL
- select date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND)
- 1998-01-01 00:00:00
- select date_add("1997-12-31 23:59:59",INTERVAL 1 MINUTE);
- date_add("1997-12-31 23:59:59",INTERVAL 1 MINUTE)
- 1998-01-01 00:00:59
- select date_add("1997-12-31 23:59:59",INTERVAL 1 HOUR);
- date_add("1997-12-31 23:59:59",INTERVAL 1 HOUR)
- 1998-01-01 00:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL 1 DAY);
- date_add("1997-12-31 23:59:59",INTERVAL 1 DAY)
- 1998-01-01 23:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL 1 MONTH);
- date_add("1997-12-31 23:59:59",INTERVAL 1 MONTH)
- 1998-01-31 23:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL 1 YEAR);
- date_add("1997-12-31 23:59:59",INTERVAL 1 YEAR)
- 1998-12-31 23:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL "1:1" MINUTE_SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL "1:1" MINUTE_SECOND)
- 1998-01-01 00:01:00
- select date_add("1997-12-31 23:59:59",INTERVAL "1:1" HOUR_MINUTE);
- date_add("1997-12-31 23:59:59",INTERVAL "1:1" HOUR_MINUTE)
- 1998-01-01 01:00:59
- select date_add("1997-12-31 23:59:59",INTERVAL "1:1" DAY_HOUR);
- date_add("1997-12-31 23:59:59",INTERVAL "1:1" DAY_HOUR)
- 1998-01-02 00:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL "1 1" YEAR_MONTH);
- date_add("1997-12-31 23:59:59",INTERVAL "1 1" YEAR_MONTH)
- 1999-01-31 23:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL "1:1:1" HOUR_SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL "1:1:1" HOUR_SECOND)
- 1998-01-01 01:01:00
- select date_add("1997-12-31 23:59:59",INTERVAL "1 1:1" DAY_MINUTE);
- date_add("1997-12-31 23:59:59",INTERVAL "1 1:1" DAY_MINUTE)
- 1998-01-02 01:00:59
- select date_add("1997-12-31 23:59:59",INTERVAL "1 1:1:1" DAY_SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL "1 1:1:1" DAY_SECOND)
- 1998-01-02 01:01:00
- select date_sub("1998-01-01 00:00:00",INTERVAL 1 SECOND);
- date_sub("1998-01-01 00:00:00",INTERVAL 1 SECOND)
- 1997-12-31 23:59:59
- select date_sub("1998-01-01 00:00:00",INTERVAL 1 MINUTE);
- date_sub("1998-01-01 00:00:00",INTERVAL 1 MINUTE)
- 1997-12-31 23:59:00
- select date_sub("1998-01-01 00:00:00",INTERVAL 1 HOUR);
- date_sub("1998-01-01 00:00:00",INTERVAL 1 HOUR)
- 1997-12-31 23:00:00
- select date_sub("1998-01-01 00:00:00",INTERVAL 1 DAY);
- date_sub("1998-01-01 00:00:00",INTERVAL 1 DAY)
- 1997-12-31 00:00:00
- select date_sub("1998-01-01 00:00:00",INTERVAL 1 MONTH);
- date_sub("1998-01-01 00:00:00",INTERVAL 1 MONTH)
- 1997-12-01 00:00:00
- select date_sub("1998-01-01 00:00:00",INTERVAL 1 YEAR);
- date_sub("1998-01-01 00:00:00",INTERVAL 1 YEAR)
- 1997-01-01 00:00:00
- select date_sub("1998-01-01 00:00:00",INTERVAL "1:1" MINUTE_SECOND);
- date_sub("1998-01-01 00:00:00",INTERVAL "1:1" MINUTE_SECOND)
- 1997-12-31 23:58:59
- select date_sub("1998-01-01 00:00:00",INTERVAL "1:1" HOUR_MINUTE);
- date_sub("1998-01-01 00:00:00",INTERVAL "1:1" HOUR_MINUTE)
- 1997-12-31 22:59:00
- select date_sub("1998-01-01 00:00:00",INTERVAL "1:1" DAY_HOUR);
- date_sub("1998-01-01 00:00:00",INTERVAL "1:1" DAY_HOUR)
- 1997-12-30 23:00:00
- select date_sub("1998-01-01 00:00:00",INTERVAL "1 1" YEAR_MONTH);
- date_sub("1998-01-01 00:00:00",INTERVAL "1 1" YEAR_MONTH)
- 1996-12-01 00:00:00
- select date_sub("1998-01-01 00:00:00",INTERVAL "1:1:1" HOUR_SECOND);
- date_sub("1998-01-01 00:00:00",INTERVAL "1:1:1" HOUR_SECOND)
- 1997-12-31 22:58:59
- select date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1" DAY_MINUTE);
- date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1" DAY_MINUTE)
- 1997-12-30 22:59:00
- select date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1:1" DAY_SECOND);
- date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1:1" DAY_SECOND)
- 1997-12-30 22:58:59
- select date_add("1997-12-31 23:59:59",INTERVAL 100000 SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL 100000 SECOND)
- 1998-01-02 03:46:39
- select date_add("1997-12-31 23:59:59",INTERVAL -100000 MINUTE);
- date_add("1997-12-31 23:59:59",INTERVAL -100000 MINUTE)
- 1997-10-23 13:19:59
- select date_add("1997-12-31 23:59:59",INTERVAL 100000 HOUR);
- date_add("1997-12-31 23:59:59",INTERVAL 100000 HOUR)
- 2009-05-29 15:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL -100000 DAY);
- date_add("1997-12-31 23:59:59",INTERVAL -100000 DAY)
- 1724-03-17 23:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL 100000 MONTH);
- date_add("1997-12-31 23:59:59",INTERVAL 100000 MONTH)
- NULL
- select date_add("1997-12-31 23:59:59",INTERVAL -100000 YEAR);
- date_add("1997-12-31 23:59:59",INTERVAL -100000 YEAR)
- NULL
- select date_add("1997-12-31 23:59:59",INTERVAL "10000:1" MINUTE_SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL "10000:1" MINUTE_SECOND)
- 1998-01-07 22:40:00
- select date_add("1997-12-31 23:59:59",INTERVAL "-10000:1" HOUR_MINUTE);
- date_add("1997-12-31 23:59:59",INTERVAL "-10000:1" HOUR_MINUTE)
- 1996-11-10 07:58:59
- select date_add("1997-12-31 23:59:59",INTERVAL "10000:1" DAY_HOUR);
- date_add("1997-12-31 23:59:59",INTERVAL "10000:1" DAY_HOUR)
- 2025-05-19 00:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL "-100 1" YEAR_MONTH);
- date_add("1997-12-31 23:59:59",INTERVAL "-100 1" YEAR_MONTH)
- 1897-11-30 23:59:59
- select date_add("1997-12-31 23:59:59",INTERVAL "10000:99:99" HOUR_SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL "10000:99:99" HOUR_SECOND)
- 1999-02-21 17:40:38
- select date_add("1997-12-31 23:59:59",INTERVAL " -10000 99:99" DAY_MINUTE);
- date_add("1997-12-31 23:59:59",INTERVAL " -10000 99:99" DAY_MINUTE)
- 1970-08-11 19:20:59
- select date_add("1997-12-31 23:59:59",INTERVAL "10000 99:99:99" DAY_SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL "10000 99:99:99" DAY_SECOND)
- 2025-05-23 04:40:38
- select "1997-12-31 23:59:59" + INTERVAL 1 SECOND;
- "1997-12-31 23:59:59" + INTERVAL 1 SECOND
- 1998-01-01 00:00:00
- select INTERVAL 1 DAY + "1997-12-31";
- INTERVAL 1 DAY + "1997-12-31"
- 1998-01-01
- select "1998-01-01 00:00:00" - INTERVAL 1 SECOND;
- "1998-01-01 00:00:00" - INTERVAL 1 SECOND
- 1997-12-31 23:59:59
- select date_sub("1998-01-02",INTERVAL 31 DAY);
- date_sub("1998-01-02",INTERVAL 31 DAY)
- 1997-12-02
- select date_add("1997-12-31",INTERVAL 1 SECOND);
- date_add("1997-12-31",INTERVAL 1 SECOND)
- 1997-12-31 00:00:01
- select date_add("1997-12-31",INTERVAL 1 DAY);
- date_add("1997-12-31",INTERVAL 1 DAY)
- 1998-01-01
- select date_add(NULL,INTERVAL 100000 SECOND);
- date_add(NULL,INTERVAL 100000 SECOND)
- NULL
- select date_add("1997-12-31 23:59:59",INTERVAL NULL SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL NULL SECOND)
- NULL
- select date_add("1997-12-31 23:59:59",INTERVAL NULL MINUTE_SECOND);
- date_add("1997-12-31 23:59:59",INTERVAL NULL MINUTE_SECOND)
- NULL
- select date_add("9999-12-31 23:59:59",INTERVAL 1 SECOND);
- date_add("9999-12-31 23:59:59",INTERVAL 1 SECOND)
- NULL
- select date_sub("0000-00-00 00:00:00",INTERVAL 1 SECOND);
- date_sub("0000-00-00 00:00:00",INTERVAL 1 SECOND)
- NULL
- select date_add('1998-01-30',Interval 1 month);
- date_add('1998-01-30',Interval 1 month)
- 1998-02-28
- select date_add('1998-01-30',Interval '2:1' year_month);
- date_add('1998-01-30',Interval '2:1' year_month)
- 2000-02-29
- select date_add('1996-02-29',Interval '1' year);
- date_add('1996-02-29',Interval '1' year)
- 1997-02-28
- select extract(YEAR FROM "1999-01-02 10:11:12");
- extract(YEAR FROM "1999-01-02 10:11:12")
- 1999
- select extract(YEAR_MONTH FROM "1999-01-02");
- extract(YEAR_MONTH FROM "1999-01-02")
- 199901
- select extract(DAY FROM "1999-01-02");
- extract(DAY FROM "1999-01-02")
- 2
- select extract(DAY_HOUR FROM "1999-01-02 10:11:12");
- extract(DAY_HOUR FROM "1999-01-02 10:11:12")
- 210
- select extract(DAY_MINUTE FROM "02 10:11:12");
- extract(DAY_MINUTE FROM "02 10:11:12")
- 21011
- select extract(DAY_SECOND FROM "225 10:11:12");
- extract(DAY_SECOND FROM "225 10:11:12")
- 225101112
- select extract(HOUR FROM "1999-01-02 10:11:12");
- extract(HOUR FROM "1999-01-02 10:11:12")
- 10
- select extract(HOUR_MINUTE FROM "10:11:12");
- extract(HOUR_MINUTE FROM "10:11:12")
- 1011
- select extract(HOUR_SECOND FROM "10:11:12");
- extract(HOUR_SECOND FROM "10:11:12")
- 101112
- select extract(MINUTE FROM "10:11:12");
- extract(MINUTE FROM "10:11:12")
- 11
- select extract(MINUTE_SECOND FROM "10:11:12");
- extract(MINUTE_SECOND FROM "10:11:12")
- 1112
- select extract(SECOND FROM "1999-01-02 10:11:12");
- extract(SECOND FROM "1999-01-02 10:11:12")
- 12
- select extract(MONTH FROM "2001-02-00");
- extract(MONTH FROM "2001-02-00")
- 2
- SELECT "1900-01-01 00:00:00" + INTERVAL 2147483648 SECOND;
- "1900-01-01 00:00:00" + INTERVAL 2147483648 SECOND
- 1968-01-20 03:14:08
- SELECT "1900-01-01 00:00:00" + INTERVAL "1:2147483647" MINUTE_SECOND;
- "1900-01-01 00:00:00" + INTERVAL "1:2147483647" MINUTE_SECOND
- 1968-01-20 03:15:07
- SELECT "1900-01-01 00:00:00" + INTERVAL "100000000:214748364700" MINUTE_SECOND;
- "1900-01-01 00:00:00" + INTERVAL "100000000:214748364700" MINUTE_SECOND
- 8895-03-27 22:11:40
- SELECT "1900-01-01 00:00:00" + INTERVAL 1<<37 SECOND;
- "1900-01-01 00:00:00" + INTERVAL 1<<37 SECOND
- 6255-04-08 15:04:32
- SELECT "1900-01-01 00:00:00" + INTERVAL 1<<31 MINUTE;
- "1900-01-01 00:00:00" + INTERVAL 1<<31 MINUTE
- 5983-01-24 02:08:00
- SELECT "1900-01-01 00:00:00" + INTERVAL 1<<20 HOUR;
- "1900-01-01 00:00:00" + INTERVAL 1<<20 HOUR
- 2019-08-15 16:00:00
- SELECT "1900-01-01 00:00:00" + INTERVAL 1<<38 SECOND;
- "1900-01-01 00:00:00" + INTERVAL 1<<38 SECOND
- NULL
- SELECT "1900-01-01 00:00:00" + INTERVAL 1<<33 MINUTE;
- "1900-01-01 00:00:00" + INTERVAL 1<<33 MINUTE
- NULL
- SELECT "1900-01-01 00:00:00" + INTERVAL 1<<30 HOUR;
- "1900-01-01 00:00:00" + INTERVAL 1<<30 HOUR
- NULL
- SELECT "1900-01-01 00:00:00" + INTERVAL "1000000000:214748364700" MINUTE_SECOND;
- "1900-01-01 00:00:00" + INTERVAL "1000000000:214748364700" MINUTE_SECOND
- NULL
- create table t1 (ctime varchar(20));
- insert into t1 values ('2001-01-12 12:23:40');
- select ctime, hour(ctime) from t1;
- ctime hour(ctime)
- 2001-01-12 12:23:40 12
- select ctime from t1 where extract(MONTH FROM ctime) = 1 AND extract(YEAR FROM ctime) = 2001;
- ctime
- 2001-01-12 12:23:40
- drop table t1;
- create table t1 (id int);
- create table t2 (id int, date date);
- insert into t1 values (1);
- insert into t2 values (1, "0000-00-00");
- insert into t1 values (2);
- insert into t2 values (2, "2000-01-01");
- select monthname(date) from t1 inner join t2 on t1.id = t2.id;
- monthname(date)
- NULL
- January
- select monthname(date) from t1 inner join t2 on t1.id = t2.id order by t1.id;
- monthname(date)
- NULL
- January
- drop table t1,t2;
- CREATE TABLE t1 (updated text) ENGINE=MyISAM;
- INSERT INTO t1 VALUES ('');
- SELECT month(updated) from t1;
- month(updated)
- NULL
- Warnings:
- Warning 1292 Truncated incorrect datetime value: ''
- SELECT year(updated) from t1;
- year(updated)
- NULL
- Warnings:
- Warning 1292 Truncated incorrect datetime value: ''
- drop table t1;
- create table t1 (d date, dt datetime, t timestamp, c char(10));
- insert into t1 values ("0000-00-00", "0000-00-00", "0000-00-00", "0000-00-00");
- select dayofyear("0000-00-00"),dayofyear(d),dayofyear(dt),dayofyear(t),dayofyear(c) from t1;
- dayofyear("0000-00-00") dayofyear(d) dayofyear(dt) dayofyear(t) dayofyear(c)
- NULL NULL NULL NULL NULL
- select dayofmonth("0000-00-00"),dayofmonth(d),dayofmonth(dt),dayofmonth(t),dayofmonth(c) from t1;
- dayofmonth("0000-00-00") dayofmonth(d) dayofmonth(dt) dayofmonth(t) dayofmonth(c)
- 0 0 0 0 0
- select month("0000-00-00"),month(d),month(dt),month(t),month(c) from t1;
- month("0000-00-00") month(d) month(dt) month(t) month(c)
- 0 0 0 0 0
- select quarter("0000-00-00"),quarter(d),quarter(dt),quarter(t),quarter(c) from t1;
- quarter("0000-00-00") quarter(d) quarter(dt) quarter(t) quarter(c)
- 0 0 0 0 0
- select week("0000-00-00"),week(d),week(dt),week(t),week(c) from t1;
- week("0000-00-00") week(d) week(dt) week(t) week(c)
- NULL NULL NULL NULL NULL
- select year("0000-00-00"),year(d),year(dt),year(t),year(c) from t1;
- year("0000-00-00") year(d) year(dt) year(t) year(c)
- 0 0 0 0 0
- select yearweek("0000-00-00"),yearweek(d),yearweek(dt),yearweek(t),yearweek(c) from t1;
- yearweek("0000-00-00") yearweek(d) yearweek(dt) yearweek(t) yearweek(c)
- NULL NULL NULL NULL NULL
- select to_days("0000-00-00"),to_days(d),to_days(dt),to_days(t),to_days(c) from t1;
- to_days("0000-00-00") to_days(d) to_days(dt) to_days(t) to_days(c)
- NULL NULL NULL NULL NULL
- select extract(MONTH FROM "0000-00-00"),extract(MONTH FROM d),extract(MONTH FROM dt),extract(MONTH FROM t),extract(MONTH FROM c) from t1;
- extract(MONTH FROM "0000-00-00") extract(MONTH FROM d) extract(MONTH FROM dt) extract(MONTH FROM t) extract(MONTH FROM c)
- 0 0 0 0 0
- drop table t1;
- CREATE TABLE t1 ( start datetime default NULL);
- INSERT INTO t1 VALUES ('2002-10-21 00:00:00'),('2002-10-28 00:00:00'),('2002-11-04 00:00:00');
- CREATE TABLE t2 ( ctime1 timestamp(14) NOT NULL, ctime2 timestamp(14) NOT NULL);
- INSERT INTO t2 VALUES (20021029165106,20021105164731);
- CREATE TABLE t3 (ctime1 char(19) NOT NULL, ctime2 char(19) NOT NULL);
- INSERT INTO t3 VALUES ("2002-10-29 16:51:06","2002-11-05 16:47:31");
- select * from t1, t2 where t1.start between t2.ctime1 and t2.ctime2;
- start ctime1 ctime2
- 2002-11-04 00:00:00 2002-10-29 16:51:06 2002-11-05 16:47:31
- select * from t1, t2 where t1.start >= t2.ctime1 and t1.start <= t2.ctime2;
- start ctime1 ctime2
- 2002-11-04 00:00:00 2002-10-29 16:51:06 2002-11-05 16:47:31
- select * from t1, t3 where t1.start between t3.ctime1 and t3.ctime2;
- start ctime1 ctime2
- 2002-11-04 00:00:00 2002-10-29 16:51:06 2002-11-05 16:47:31
- drop table t1,t2,t3;
- select @a:=FROM_UNIXTIME(1);
- @a:=FROM_UNIXTIME(1)
- 1970-01-01 03:00:01
- select unix_timestamp(@a);
- unix_timestamp(@a)
- 1
- select unix_timestamp('1969-12-01 19:00:01');
- unix_timestamp('1969-12-01 19:00:01')
- 0
- select from_unixtime(-1);
- from_unixtime(-1)
- NULL
- select from_unixtime(2145916800);
- from_unixtime(2145916800)
- NULL
- select from_unixtime(0);
- from_unixtime(0)
- 1970-01-01 03:00:00
- CREATE TABLE t1 (datetime datetime, timestamp timestamp, date date, time time);
- INSERT INTO t1 values ("2001-01-02 03:04:05", "2002-01-02 03:04:05", "2003-01-02", "06:07:08");
- SELECT * from t1;
- datetime timestamp date time
- 2001-01-02 03:04:05 2002-01-02 03:04:05 2003-01-02 06:07:08
- select date_add("1997-12-31",INTERVAL 1 SECOND);
- date_add("1997-12-31",INTERVAL 1 SECOND)
- 1997-12-31 00:00:01
- select date_add("1997-12-31",INTERVAL "1 1" YEAR_MONTH);
- date_add("1997-12-31",INTERVAL "1 1" YEAR_MONTH)
- 1999-01-31
- select date_add(datetime, INTERVAL 1 SECOND) from t1;
- date_add(datetime, INTERVAL 1 SECOND)
- 2001-01-02 03:04:06
- select date_add(datetime, INTERVAL 1 YEAR) from t1;
- date_add(datetime, INTERVAL 1 YEAR)
- 2002-01-02 03:04:05
- select date_add(date,INTERVAL 1 SECOND) from t1;
- date_add(date,INTERVAL 1 SECOND)
- 2003-01-02 00:00:01
- select date_add(date,INTERVAL 1 MINUTE) from t1;
- date_add(date,INTERVAL 1 MINUTE)
- 2003-01-02 00:01:00
- select date_add(date,INTERVAL 1 HOUR) from t1;
- date_add(date,INTERVAL 1 HOUR)
- 2003-01-02 01:00:00
- select date_add(date,INTERVAL 1 DAY) from t1;
- date_add(date,INTERVAL 1 DAY)
- 2003-01-03
- select date_add(date,INTERVAL 1 MONTH) from t1;
- date_add(date,INTERVAL 1 MONTH)
- 2003-02-02
- select date_add(date,INTERVAL 1 YEAR) from t1;
- date_add(date,INTERVAL 1 YEAR)
- 2004-01-02
- select date_add(date,INTERVAL "1:1" MINUTE_SECOND) from t1;
- date_add(date,INTERVAL "1:1" MINUTE_SECOND)
- 2003-01-02 00:01:01
- select date_add(date,INTERVAL "1:1" HOUR_MINUTE) from t1;
- date_add(date,INTERVAL "1:1" HOUR_MINUTE)
- 2003-01-02 01:01:00
- select date_add(date,INTERVAL "1:1" DAY_HOUR) from t1;
- date_add(date,INTERVAL "1:1" DAY_HOUR)
- 2003-01-03 01:00:00
- select date_add(date,INTERVAL "1 1" YEAR_MONTH) from t1;
- date_add(date,INTERVAL "1 1" YEAR_MONTH)
- 2004-02-02
- select date_add(date,INTERVAL "1:1:1" HOUR_SECOND) from t1;
- date_add(date,INTERVAL "1:1:1" HOUR_SECOND)
- 2003-01-02 01:01:01
- select date_add(date,INTERVAL "1 1:1" DAY_MINUTE) from t1;
- date_add(date,INTERVAL "1 1:1" DAY_MINUTE)
- 2003-01-03 01:01:00
- select date_add(date,INTERVAL "1 1:1:1" DAY_SECOND) from t1;
- date_add(date,INTERVAL "1 1:1:1" DAY_SECOND)
- 2003-01-03 01:01:01
- select date_add(time,INTERVAL 1 SECOND) from t1;
- date_add(time,INTERVAL 1 SECOND)
- NULL
- Warnings:
- Warning 1264 Data truncated; out of range for column 'time' at row 1
- drop table t1;
- select last_day('2000-02-05') as f1, last_day('2002-12-31') as f2,
- last_day('2003-03-32') as f3, last_day('2003-04-01') as f4,
- last_day('2001-01-01 01:01:01') as f5, last_day(NULL),
- last_day('2001-02-12');
- f1 f2 f3 f4 f5 last_day(NULL) last_day('2001-02-12')
- 2000-02-29 2002-12-31 NULL 2003-04-30 2001-01-31 NULL 2001-02-28
- Warnings:
- Warning 1292 Truncated incorrect datetime value: '2003-03-32'
- create table t1 select last_day('2000-02-05') as a,
- from_days(to_days("960101")) as b;
- describe t1;
- Field Type Null Key Default Extra
- a date 0000-00-00
- b date YES NULL
- select * from t1;
- a b
- 2000-02-29 1996-01-01
- drop table t1;
- select last_day('2000-02-05') as a,
- from_days(to_days("960101")) as b;
- a b
- 2000-02-29 1996-01-01
- select date_add(last_day("1997-12-1"), INTERVAL 1 DAY);
- date_add(last_day("1997-12-1"), INTERVAL 1 DAY)
- 1998-01-01
- select length(last_day("1997-12-1"));
- length(last_day("1997-12-1"))
- 10
- select last_day("1997-12-1")+0;
- last_day("1997-12-1")+0
- 19971231
- select last_day("1997-12-1")+0.0;
- last_day("1997-12-1")+0.0
- 19971231.0
- select strcmp(date_sub(localtimestamp(), interval 3 hour), utc_timestamp())=0;
- strcmp(date_sub(localtimestamp(), interval 3 hour), utc_timestamp())=0
- 1
- select strcmp(date_format(date_sub(localtimestamp(), interval 3 hour),"%T"), utc_time())=0;
- strcmp(date_format(date_sub(localtimestamp(), interval 3 hour),"%T"), utc_time())=0
- 1
- select strcmp(date_format(date_sub(localtimestamp(), interval 3 hour),"%Y-%m-%d"), utc_date())=0;
- strcmp(date_format(date_sub(localtimestamp(), interval 3 hour),"%Y-%m-%d"), utc_date())=0
- 1
- select strcmp(date_format(utc_timestamp(),"%T"), utc_time())=0;
- strcmp(date_format(utc_timestamp(),"%T"), utc_time())=0
- 1
- select strcmp(date_format(utc_timestamp(),"%Y-%m-%d"), utc_date())=0;
- strcmp(date_format(utc_timestamp(),"%Y-%m-%d"), utc_date())=0
- 1
- select strcmp(concat(utc_date(),' ',utc_time()),utc_timestamp())=0;
- strcmp(concat(utc_date(),' ',utc_time()),utc_timestamp())=0
- 1
- explain extended select period_add("9602",-12),period_diff(199505,"9404"),from_days(to_days("960101")),dayofmonth("1997-01-02"), month("1997-01-02"), monthname("1972-03-04"),dayofyear("0000-00-00"),HOUR("1997-03-03 23:03:22"),MINUTE("23:03:22"),SECOND(230322),QUARTER(980303),WEEK("1998-03-03"),yearweek("2000-01-01",1),week(19950101,1),year("98-02-03"),weekday(curdate())-weekday(now()),dayname("1962-03-03"),unix_timestamp(),sec_to_time(time_to_sec("0:30:47")/6.21),curtime(),utc_time(),curdate(),utc_date(),utc_timestamp(),date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w"),from_unixtime(unix_timestamp("1994-03-02 10:11:12")),"1997-12-31 23:59:59" + INTERVAL 1 SECOND,"1998-01-01 00:00:00" - INTERVAL 1 SECOND,INTERVAL 1 DAY + "1997-12-31", extract(YEAR FROM "1999-01-02 10:11:12"),date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND);
- id select_type table type possible_keys key key_len ref rows Extra
- 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
- Warnings:
- Note 1003 select sql_no_cache period_add(_latin1'9602',-(12)) AS `period_add("9602",-12)`,period_diff(199505,_latin1'9404') AS `period_diff(199505,"9404")`,from_days(to_days(_latin1'960101')) AS `from_days(to_days("960101"))`,dayofmonth(_latin1'1997-01-02') AS `dayofmonth("1997-01-02")`,month(_latin1'1997-01-02') AS `month("1997-01-02")`,monthname(_latin1'1972-03-04') AS `monthname("1972-03-04")`,dayofyear(_latin1'0000-00-00') AS `dayofyear("0000-00-00")`,hour(_latin1'1997-03-03 23:03:22') AS `HOUR("1997-03-03 23:03:22")`,minute(_latin1'23:03:22') AS `MINUTE("23:03:22")`,second(230322) AS `SECOND(230322)`,quarter(980303) AS `QUARTER(980303)`,week(_latin1'1998-03-03',0) AS `WEEK("1998-03-03")`,yearweek(_latin1'2000-01-01',1) AS `yearweek("2000-01-01",1)`,week(19950101,1) AS `week(19950101,1)`,year(_latin1'98-02-03') AS `year("98-02-03")`,(weekday(to_days(curdate())) - weekday(to_days(now()))) AS `weekday(curdate())-weekday(now())`,dayname(to_days(_latin1'1962-03-03')) AS `dayname("1962-03-03")`,unix_timestamp() AS `unix_timestamp()`,sec_to_time((time_to_sec(_latin1'0:30:47') / 6.21)) AS `sec_to_time(time_to_sec("0:30:47")/6.21)`,curtime() AS `curtime()`,utc_time() AS `utc_time()`,curdate() AS `curdate()`,utc_date() AS `utc_date()`,utc_timestamp() AS `utc_timestamp()`,date_format(_latin1'1997-01-02 03:04:05',_latin1'%M %W %D %Y %y %m %d %h %i %s %w') AS `date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w")`,from_unixtime(unix_timestamp(_latin1'1994-03-02 10:11:12')) AS `from_unixtime(unix_timestamp("1994-03-02 10:11:12"))`,(_latin1'1997-12-31 23:59:59' + interval 1 second) AS `"1997-12-31 23:59:59" + INTERVAL 1 SECOND`,(_latin1'1998-01-01 00:00:00' - interval 1 second) AS `"1998-01-01 00:00:00" - INTERVAL 1 SECOND`,(_latin1'1997-12-31' + interval 1 day) AS `INTERVAL 1 DAY + "1997-12-31"`,extract(year from _latin1'1999-01-02 10:11:12') AS `extract(YEAR FROM "1999-01-02 10:11:12")`,(_latin1'1997-12-31 23:59:59' + interval 1 second) AS `date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND)`
- SET @TMP=NOW();
- CREATE TABLE t1 (d DATETIME);
- INSERT INTO t1 VALUES (NOW());
- INSERT INTO t1 VALUES (NOW());
- INSERT INTO t1 VALUES (NOW());
- SELECT count(*) FROM t1 WHERE d>FROM_DAYS(TO_DAYS(@TMP)) AND d<=FROM_DAYS(TO_DAYS(@TMP)+1);
- count(*)
- 3
- DROP TABLE t1;
- select last_day('2005-00-00');
- last_day('2005-00-00')
- NULL
- Warnings:
- Warning 1292 Truncated incorrect datetime value: '2005-00-00'
- select last_day('2005-00-01');
- last_day('2005-00-01')
- NULL
- Warnings:
- Warning 1292 Truncated incorrect datetime value: '2005-00-01'
- select last_day('2005-01-00');
- last_day('2005-01-00')
- NULL
- Warnings:
- Warning 1292 Truncated incorrect datetime value: '2005-01-00'