mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 05:22:25 +01:00
dfb60ca085
Added CEIL as an alias for CEILING Cleaned up CHECK constraint handling. (We don't anymore require braces after CHECK) Added casting to CHAR.
402 lines
19 KiB
Text
402 lines
19 KiB
Text
drop table if exists t1,t2,t3;
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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");
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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")
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1996-01-01 31 1 5
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select period_add("9602",-12),period_diff(199505,"9404") ;
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period_add("9602",-12) period_diff(199505,"9404")
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199502 13
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select now()-now(),weekday(curdate())-weekday(now()),unix_timestamp()-unix_timestamp(now());
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now()-now() weekday(curdate())-weekday(now()) unix_timestamp()-unix_timestamp(now())
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0 0 0
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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;
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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
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1994-03-02 10:11:12 1994-03-02 10:11:12 19940302101112
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select sec_to_time(9001),sec_to_time(9001)+0,time_to_sec("15:12:22"),
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sec_to_time(time_to_sec("0:30:47")/6.21);
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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)
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02:30:01 23001 54742 00:04:57
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select sec_to_time(time_to_sec('-838:59:59'));
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sec_to_time(time_to_sec('-838:59:59'))
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-838:59:59
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select now()-curdate()*1000000-curtime();
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now()-curdate()*1000000-curtime()
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0
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select strcmp(current_timestamp(),concat(current_date()," ",current_time()));
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strcmp(current_timestamp(),concat(current_date()," ",current_time()))
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0
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select strcmp(localtime(),concat(current_date()," ",current_time()));
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strcmp(localtime(),concat(current_date()," ",current_time()))
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0
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select strcmp(localtimestamp(),concat(current_date()," ",current_time()));
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strcmp(localtimestamp(),concat(current_date()," ",current_time()))
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0
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select date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w");
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date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w")
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January Thursday 2nd 1997 97 01 02 03 04 05 4
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select date_format("1997-01-02", concat("%M %W %D ","%Y %y %m %d %h %i %s %w"));
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date_format("1997-01-02", concat("%M %W %D ","%Y %y %m %d %h %i %s %w"))
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January Thursday 2nd 1997 97 01 02 12 00 00 4
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select dayofmonth("1997-01-02"),dayofmonth(19970323);
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dayofmonth("1997-01-02") dayofmonth(19970323)
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2 23
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select month("1997-01-02"),year("98-02-03"),dayofyear("1997-12-31");
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month("1997-01-02") year("98-02-03") dayofyear("1997-12-31")
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1 1998 365
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select month("2001-02-00"),year("2001-00-00");
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month("2001-02-00") year("2001-00-00")
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2 2001
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select DAYOFYEAR("1997-03-03"), WEEK("1998-03-03"), QUARTER(980303);
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DAYOFYEAR("1997-03-03") WEEK("1998-03-03") QUARTER(980303)
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62 9 1
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select HOUR("1997-03-03 23:03:22"), MINUTE("23:03:22"), SECOND(230322);
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HOUR("1997-03-03 23:03:22") MINUTE("23:03:22") SECOND(230322)
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23 3 22
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select week(19980101),week(19970101),week(19980101,1),week(19970101,1);
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week(19980101) week(19970101) week(19980101,1) week(19970101,1)
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0 0 1 1
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select week(19981231),week(19971231),week(19981231,1),week(19971231,1);
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week(19981231) week(19971231) week(19981231,1) week(19971231,1)
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52 52 53 53
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select week(19950101),week(19950101,1);
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week(19950101) week(19950101,1)
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1 0
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select yearweek('1981-12-31',1),yearweek('1982-01-01',1),yearweek('1982-12-31',1),yearweek('1983-01-01',1);
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yearweek('1981-12-31',1) yearweek('1982-01-01',1) yearweek('1982-12-31',1) yearweek('1983-01-01',1)
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198153 198153 198252 198252
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select yearweek('1987-01-01',1),yearweek('1987-01-01');
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yearweek('1987-01-01',1) yearweek('1987-01-01')
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198701 198652
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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';
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2000 2001 2002 2003 2004 2005 2006
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0 0 0 0 0 0 1
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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';
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2000 2001 2002 2003 2004 2005 2006
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1 0 1 1 1 1 1
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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';
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2000 2001 2002 2003 2004 2005 2006
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0 1 1 1 1 0 0
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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';
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2000 2001 2002 2003 2004 2005 2006
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1 1 1 2 2 1 1
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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';
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2000 2001 2002 2003 2004 2005 2006
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199952 200053 200152 200252 200352 200452 200601
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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';
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2000 2001 2002 2003 2004 2005 2006
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200001 200053 200201 200301 200401 200501 200601
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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';
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2000 2001 2002 2003 2004 2005 2006
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199952 200101 200201 200301 200401 200453 200552
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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';
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2000 2001 2002 2003 2004 2005 2006
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200001 200101 200201 200302 200402 200501 200601
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select week(19981231,2), week(19981231,3), week(20000101,2), week(20000101,3);
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week(19981231,2) week(19981231,3) week(20000101,2) week(20000101,3)
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52 53 52 52
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select week(20001231,2),week(20001231,3);
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week(20001231,2) week(20001231,3)
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1 52
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select date_format('1998-12-31','%x-%v'),date_format('1999-01-01','%x-%v');
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date_format('1998-12-31','%x-%v') date_format('1999-01-01','%x-%v')
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1998-53 1998-53
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select date_format('1999-12-31','%x-%v'),date_format('2000-01-01','%x-%v');
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date_format('1999-12-31','%x-%v') date_format('2000-01-01','%x-%v')
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1999-52 1999-52
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select dayname("1962-03-03"),dayname("1962-03-03")+0;
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dayname("1962-03-03") dayname("1962-03-03")+0
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Saturday 5
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select monthname("1972-03-04"),monthname("1972-03-04")+0;
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monthname("1972-03-04") monthname("1972-03-04")+0
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March 3
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select time_format(19980131000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
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time_format(19980131000000,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
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00|12|0|12|00|AM|12:00:00 AM|00|00:00:00
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select time_format(19980131010203,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
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time_format(19980131010203,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
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01|01|1|1|02|AM|01:02:03 AM|03|01:02:03
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select time_format(19980131131415,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
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time_format(19980131131415,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
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13|01|13|1|14|PM|01:14:15 PM|15|13:14:15
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select time_format(19980131010015,'%H|%I|%k|%l|%i|%p|%r|%S|%T');
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time_format(19980131010015,'%H|%I|%k|%l|%i|%p|%r|%S|%T')
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01|01|1|1|00|AM|01:00:15 AM|15|01:00:15
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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');
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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')
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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
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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');
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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')
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NULL
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select date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND);
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date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND)
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1998-01-01 00:00:00
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select date_add("1997-12-31 23:59:59",INTERVAL 1 MINUTE);
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date_add("1997-12-31 23:59:59",INTERVAL 1 MINUTE)
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1998-01-01 00:00:59
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select date_add("1997-12-31 23:59:59",INTERVAL 1 HOUR);
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date_add("1997-12-31 23:59:59",INTERVAL 1 HOUR)
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1998-01-01 00:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL 1 DAY);
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date_add("1997-12-31 23:59:59",INTERVAL 1 DAY)
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1998-01-01 23:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL 1 MONTH);
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date_add("1997-12-31 23:59:59",INTERVAL 1 MONTH)
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1998-01-31 23:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL 1 YEAR);
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date_add("1997-12-31 23:59:59",INTERVAL 1 YEAR)
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1998-12-31 23:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL "1:1" MINUTE_SECOND);
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date_add("1997-12-31 23:59:59",INTERVAL "1:1" MINUTE_SECOND)
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1998-01-01 00:01:00
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select date_add("1997-12-31 23:59:59",INTERVAL "1:1" HOUR_MINUTE);
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date_add("1997-12-31 23:59:59",INTERVAL "1:1" HOUR_MINUTE)
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1998-01-01 01:00:59
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select date_add("1997-12-31 23:59:59",INTERVAL "1:1" DAY_HOUR);
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date_add("1997-12-31 23:59:59",INTERVAL "1:1" DAY_HOUR)
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1998-01-02 00:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL "1 1" YEAR_MONTH);
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date_add("1997-12-31 23:59:59",INTERVAL "1 1" YEAR_MONTH)
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1999-01-31 23:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL "1:1:1" HOUR_SECOND);
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date_add("1997-12-31 23:59:59",INTERVAL "1:1:1" HOUR_SECOND)
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1998-01-01 01:01:00
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select date_add("1997-12-31 23:59:59",INTERVAL "1 1:1" DAY_MINUTE);
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date_add("1997-12-31 23:59:59",INTERVAL "1 1:1" DAY_MINUTE)
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1998-01-02 01:00:59
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select date_add("1997-12-31 23:59:59",INTERVAL "1 1:1:1" DAY_SECOND);
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date_add("1997-12-31 23:59:59",INTERVAL "1 1:1:1" DAY_SECOND)
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1998-01-02 01:01:00
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select date_sub("1998-01-01 00:00:00",INTERVAL 1 SECOND);
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date_sub("1998-01-01 00:00:00",INTERVAL 1 SECOND)
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1997-12-31 23:59:59
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select date_sub("1998-01-01 00:00:00",INTERVAL 1 MINUTE);
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date_sub("1998-01-01 00:00:00",INTERVAL 1 MINUTE)
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1997-12-31 23:59:00
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select date_sub("1998-01-01 00:00:00",INTERVAL 1 HOUR);
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date_sub("1998-01-01 00:00:00",INTERVAL 1 HOUR)
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1997-12-31 23:00:00
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select date_sub("1998-01-01 00:00:00",INTERVAL 1 DAY);
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date_sub("1998-01-01 00:00:00",INTERVAL 1 DAY)
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1997-12-31 00:00:00
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select date_sub("1998-01-01 00:00:00",INTERVAL 1 MONTH);
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date_sub("1998-01-01 00:00:00",INTERVAL 1 MONTH)
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1997-12-01 00:00:00
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select date_sub("1998-01-01 00:00:00",INTERVAL 1 YEAR);
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date_sub("1998-01-01 00:00:00",INTERVAL 1 YEAR)
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1997-01-01 00:00:00
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select date_sub("1998-01-01 00:00:00",INTERVAL "1:1" MINUTE_SECOND);
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date_sub("1998-01-01 00:00:00",INTERVAL "1:1" MINUTE_SECOND)
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1997-12-31 23:58:59
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select date_sub("1998-01-01 00:00:00",INTERVAL "1:1" HOUR_MINUTE);
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date_sub("1998-01-01 00:00:00",INTERVAL "1:1" HOUR_MINUTE)
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1997-12-31 22:59:00
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select date_sub("1998-01-01 00:00:00",INTERVAL "1:1" DAY_HOUR);
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date_sub("1998-01-01 00:00:00",INTERVAL "1:1" DAY_HOUR)
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1997-12-30 23:00:00
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select date_sub("1998-01-01 00:00:00",INTERVAL "1 1" YEAR_MONTH);
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date_sub("1998-01-01 00:00:00",INTERVAL "1 1" YEAR_MONTH)
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1996-12-01 00:00:00
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select date_sub("1998-01-01 00:00:00",INTERVAL "1:1:1" HOUR_SECOND);
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date_sub("1998-01-01 00:00:00",INTERVAL "1:1:1" HOUR_SECOND)
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1997-12-31 22:58:59
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select date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1" DAY_MINUTE);
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date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1" DAY_MINUTE)
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1997-12-30 22:59:00
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select date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1:1" DAY_SECOND);
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date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1:1" DAY_SECOND)
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1997-12-30 22:58:59
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select date_add("1997-12-31 23:59:59",INTERVAL 100000 SECOND);
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date_add("1997-12-31 23:59:59",INTERVAL 100000 SECOND)
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1998-01-02 03:46:39
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select date_add("1997-12-31 23:59:59",INTERVAL -100000 MINUTE);
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date_add("1997-12-31 23:59:59",INTERVAL -100000 MINUTE)
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1997-10-23 13:19:59
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select date_add("1997-12-31 23:59:59",INTERVAL 100000 HOUR);
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date_add("1997-12-31 23:59:59",INTERVAL 100000 HOUR)
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2009-05-29 15:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL -100000 DAY);
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date_add("1997-12-31 23:59:59",INTERVAL -100000 DAY)
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1724-03-17 23:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL 100000 MONTH);
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date_add("1997-12-31 23:59:59",INTERVAL 100000 MONTH)
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NULL
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select date_add("1997-12-31 23:59:59",INTERVAL -100000 YEAR);
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date_add("1997-12-31 23:59:59",INTERVAL -100000 YEAR)
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NULL
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select date_add("1997-12-31 23:59:59",INTERVAL "10000:1" MINUTE_SECOND);
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date_add("1997-12-31 23:59:59",INTERVAL "10000:1" MINUTE_SECOND)
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1998-01-07 22:40:00
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select date_add("1997-12-31 23:59:59",INTERVAL "-10000:1" HOUR_MINUTE);
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date_add("1997-12-31 23:59:59",INTERVAL "-10000:1" HOUR_MINUTE)
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1996-11-10 07:58:59
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select date_add("1997-12-31 23:59:59",INTERVAL "10000:1" DAY_HOUR);
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date_add("1997-12-31 23:59:59",INTERVAL "10000:1" DAY_HOUR)
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2025-05-19 00:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL "-100 1" YEAR_MONTH);
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date_add("1997-12-31 23:59:59",INTERVAL "-100 1" YEAR_MONTH)
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1897-11-30 23:59:59
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select date_add("1997-12-31 23:59:59",INTERVAL "10000:99:99" HOUR_SECOND);
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date_add("1997-12-31 23:59:59",INTERVAL "10000:99:99" HOUR_SECOND)
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1999-02-21 17:40:38
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select date_add("1997-12-31 23:59:59",INTERVAL " -10000 99:99" DAY_MINUTE);
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date_add("1997-12-31 23:59:59",INTERVAL " -10000 99:99" DAY_MINUTE)
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1970-08-11 19:20:59
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select date_add("1997-12-31 23:59:59",INTERVAL "10000 99:99:99" DAY_SECOND);
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date_add("1997-12-31 23:59:59",INTERVAL "10000 99:99:99" DAY_SECOND)
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2025-05-23 04:40:38
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select "1997-12-31 23:59:59" + INTERVAL 1 SECOND;
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"1997-12-31 23:59:59" + INTERVAL 1 SECOND
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1998-01-01 00:00:00
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select INTERVAL 1 DAY + "1997-12-31";
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INTERVAL 1 DAY + "1997-12-31"
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1998-01-01
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select "1998-01-01 00:00:00" - INTERVAL 1 SECOND;
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"1998-01-01 00:00:00" - INTERVAL 1 SECOND
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1997-12-31 23:59:59
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select date_sub("1998-01-02",INTERVAL 31 DAY);
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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
|
|
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
|
|
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) TYPE=MyISAM;
|
|
INSERT INTO t1 VALUES ('');
|
|
SELECT month(updated) from t1;
|
|
month(updated)
|
|
NULL
|
|
SELECT year(updated) from t1;
|
|
year(updated)
|
|
NULL
|
|
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 20021029165106 20021105164731
|
|
select * from t1, t2 where t1.start >= t2.ctime1 and t1.start <= t2.ctime2;
|
|
start ctime1 ctime2
|
|
2002-11-04 00:00:00 20021029165106 20021105164731
|
|
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;
|