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9f7d24586b
Constant expressions in WHERE/HAVING/ON clauses aren't cached and evaluated
for each row. This causes slowdown of query execution especially if constant
UDF/SP function are used.
Now WHERE/HAVING/ON expressions are analyzed in the top-bottom direction with
help of the compile function. When analyzer meets a constant item it
sets a flag for the tree transformer to cache the item and doesn't allow tree
walker to go deeper. Thus, the topmost item of a constant expression if
cached. This is done after all other optimizations were applied to
WHERE/HAVING/ON expressions
A helper function called cache_const_exprs is added to the JOIN class.
It calls compile method with caching analyzer and transformer on WHERE,
HAVING, ON expressions if they're present.
The cache_const_expr_analyzer and cache_const_expr_transformer functions are
added to the Item class. The first one check if the item can be cached and
the second caches it if so.
A new Item_cache_datetime class is derived from the Item_cache class.
It caches both int and string values of the underlying item independently to
avoid DATETIME aware int-to-string conversion. Thus it completely relies on
the ability of the underlying item to correctly convert DATETIME value from
int to string and vice versa.
1344 lines
56 KiB
Plaintext
1344 lines
56 KiB
Plaintext
drop table if exists t1,t2,t3;
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set time_zone="+03:00";
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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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0.000000 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 19940302101112.000000
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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 23001.000000 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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0.000000
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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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53 52
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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';
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0 1 2 3 4 5 6 7
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52 53 52 53 52 52 52 52
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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';
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0 1 2 3 4 5 6 7
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0 0 52 52 0 0 52 52
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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';
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0 1 2 3 4 5 6 7
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1 1 1 1 1 1 1 1
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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';
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0 1 2 3 4 5 6 7
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53 52 53 52 53 52 1 52
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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';
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0 1 2 3 4 5 6 7
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0 1 53 1 1 1 1 1
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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);
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yearweek(20001231,0) yearweek(20001231,1) yearweek(20001231,2) yearweek(20001231,3) yearweek(20001231,4) yearweek(20001231,5) yearweek(20001231,6) yearweek(20001231,7)
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200053 200052 200053 200052 200101 200052 200101 200052
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set default_week_format = 6;
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select week(20001231), week(20001231,6);
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week(20001231) week(20001231,6)
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1 1
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set default_week_format = 0;
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set default_week_format = 2;
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select week(20001231),week(20001231,2),week(20001231,0);
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week(20001231) week(20001231,2) week(20001231,0)
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53 53 53
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set default_week_format = 0;
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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);
|
|
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
|
|
Warnings:
|
|
Warning 1441 Datetime function: datetime field overflow
|
|
select date_add("1997-12-31 23:59:59",INTERVAL -100000 YEAR);
|
|
date_add("1997-12-31 23:59:59",INTERVAL -100000 YEAR)
|
|
NULL
|
|
Warnings:
|
|
Warning 1441 Datetime function: datetime field overflow
|
|
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
|
|
Warnings:
|
|
Warning 1441 Datetime function: datetime field overflow
|
|
select date_sub("0000-00-00 00:00:00",INTERVAL 1 SECOND);
|
|
date_sub("0000-00-00 00:00:00",INTERVAL 1 SECOND)
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Incorrect datetime value: '0000-00-00 00:00:00'
|
|
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")
|
|
8385959
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '225 10:11:12'
|
|
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 EXTRACT(QUARTER FROM '2004-01-15') AS quarter;
|
|
quarter
|
|
1
|
|
SELECT EXTRACT(QUARTER FROM '2004-02-15') AS quarter;
|
|
quarter
|
|
1
|
|
SELECT EXTRACT(QUARTER FROM '2004-03-15') AS quarter;
|
|
quarter
|
|
1
|
|
SELECT EXTRACT(QUARTER FROM '2004-04-15') AS quarter;
|
|
quarter
|
|
2
|
|
SELECT EXTRACT(QUARTER FROM '2004-05-15') AS quarter;
|
|
quarter
|
|
2
|
|
SELECT EXTRACT(QUARTER FROM '2004-06-15') AS quarter;
|
|
quarter
|
|
2
|
|
SELECT EXTRACT(QUARTER FROM '2004-07-15') AS quarter;
|
|
quarter
|
|
3
|
|
SELECT EXTRACT(QUARTER FROM '2004-08-15') AS quarter;
|
|
quarter
|
|
3
|
|
SELECT EXTRACT(QUARTER FROM '2004-09-15') AS quarter;
|
|
quarter
|
|
3
|
|
SELECT EXTRACT(QUARTER FROM '2004-10-15') AS quarter;
|
|
quarter
|
|
4
|
|
SELECT EXTRACT(QUARTER FROM '2004-11-15') AS quarter;
|
|
quarter
|
|
4
|
|
SELECT EXTRACT(QUARTER FROM '2004-12-15') AS quarter;
|
|
quarter
|
|
4
|
|
SELECT DATE_SUB(str_to_date('9999-12-31 00:01:00','%Y-%m-%d %H:%i:%s'), INTERVAL 1 MINUTE);
|
|
DATE_SUB(str_to_date('9999-12-31 00:01:00','%Y-%m-%d %H:%i:%s'), INTERVAL 1 MINUTE)
|
|
9999-12-31 00:00:00
|
|
SELECT DATE_ADD(str_to_date('9999-12-30 23:59:00','%Y-%m-%d %H:%i:%s'), INTERVAL 1 MINUTE);
|
|
DATE_ADD(str_to_date('9999-12-30 23:59:00','%Y-%m-%d %H:%i:%s'), INTERVAL 1 MINUTE)
|
|
9999-12-31 00:00:00
|
|
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
|
|
Warnings:
|
|
Warning 1441 Datetime function: datetime field overflow
|
|
SELECT "1900-01-01 00:00:00" + INTERVAL 1<<33 MINUTE;
|
|
"1900-01-01 00:00:00" + INTERVAL 1<<33 MINUTE
|
|
NULL
|
|
Warnings:
|
|
Warning 1441 Datetime function: datetime field overflow
|
|
SELECT "1900-01-01 00:00:00" + INTERVAL 1<<30 HOUR;
|
|
"1900-01-01 00:00:00" + INTERVAL 1<<30 HOUR
|
|
NULL
|
|
Warnings:
|
|
Warning 1441 Datetime function: datetime field overflow
|
|
SELECT "1900-01-01 00:00:00" + INTERVAL "1000000000:214748364700" MINUTE_SECOND;
|
|
"1900-01-01 00:00:00" + INTERVAL "1000000000:214748364700" MINUTE_SECOND
|
|
NULL
|
|
Warnings:
|
|
Warning 1441 Datetime function: datetime field overflow
|
|
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 Incorrect datetime value: ''
|
|
SELECT year(updated) from t1;
|
|
year(updated)
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 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
|
|
Warnings:
|
|
Warning 1292 Incorrect datetime value: '0000-00-00'
|
|
Warning 1292 Incorrect datetime value: '0000-00-00'
|
|
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
|
|
Warnings:
|
|
Warning 1292 Incorrect datetime value: '0000-00-00'
|
|
Warning 1292 Incorrect datetime value: '0000-00-00'
|
|
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
|
|
Warnings:
|
|
Warning 1292 Incorrect datetime value: '0000-00-00'
|
|
Warning 1292 Incorrect datetime value: '0000-00-00'
|
|
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
|
|
Warnings:
|
|
Warning 1292 Incorrect datetime value: '0000-00-00'
|
|
Warning 1292 Incorrect datetime value: '0000-00-00'
|
|
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 NOT NULL, ctime2 timestamp 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(2147483647);
|
|
from_unixtime(2147483647)
|
|
2038-01-19 06:14:07
|
|
select from_unixtime(2147483648);
|
|
from_unixtime(2147483648)
|
|
NULL
|
|
select from_unixtime(0);
|
|
from_unixtime(0)
|
|
1970-01-01 03:00:00
|
|
select unix_timestamp(from_unixtime(2147483647));
|
|
unix_timestamp(from_unixtime(2147483647))
|
|
2147483647
|
|
select unix_timestamp(from_unixtime(2147483648));
|
|
unix_timestamp(from_unixtime(2147483648))
|
|
NULL
|
|
select unix_timestamp('2039-01-20 01:00:00');
|
|
unix_timestamp('2039-01-20 01:00:00')
|
|
0
|
|
select unix_timestamp('1968-01-20 01:00:00');
|
|
unix_timestamp('1968-01-20 01:00:00')
|
|
0
|
|
select unix_timestamp('2038-02-10 01:00:00');
|
|
unix_timestamp('2038-02-10 01:00:00')
|
|
0
|
|
select unix_timestamp('1969-11-20 01:00:00');
|
|
unix_timestamp('1969-11-20 01:00:00')
|
|
0
|
|
select unix_timestamp('2038-01-20 01:00:00');
|
|
unix_timestamp('2038-01-20 01:00:00')
|
|
0
|
|
select unix_timestamp('1969-12-30 01:00:00');
|
|
unix_timestamp('1969-12-30 01:00:00')
|
|
0
|
|
select unix_timestamp('2038-01-17 12:00:00');
|
|
unix_timestamp('2038-01-17 12:00:00')
|
|
2147331600
|
|
select unix_timestamp('1970-01-01 03:00:01');
|
|
unix_timestamp('1970-01-01 03:00:01')
|
|
1
|
|
select unix_timestamp('2038-01-19 07:14:07');
|
|
unix_timestamp('2038-01-19 07:14:07')
|
|
0
|
|
SELECT CHARSET(DAYNAME(19700101));
|
|
CHARSET(DAYNAME(19700101))
|
|
latin1
|
|
SELECT CHARSET(MONTHNAME(19700101));
|
|
CHARSET(MONTHNAME(19700101))
|
|
latin1
|
|
SELECT LOWER(DAYNAME(19700101));
|
|
LOWER(DAYNAME(19700101))
|
|
thursday
|
|
SELECT LOWER(MONTHNAME(19700101));
|
|
LOWER(MONTHNAME(19700101))
|
|
january
|
|
SELECT COERCIBILITY(MONTHNAME('1970-01-01')),COERCIBILITY(DAYNAME('1970-01-01'));
|
|
COERCIBILITY(MONTHNAME('1970-01-01')) COERCIBILITY(DAYNAME('1970-01-01'))
|
|
4 4
|
|
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(date,INTERVAL "1" WEEK) from t1;
|
|
date_add(date,INTERVAL "1" WEEK)
|
|
2003-01-09
|
|
select date_add(date,INTERVAL "1" QUARTER) from t1;
|
|
date_add(date,INTERVAL "1" QUARTER)
|
|
2003-04-02
|
|
select timestampadd(MINUTE, 1, date) from t1;
|
|
timestampadd(MINUTE, 1, date)
|
|
2003-01-02 00:01:00
|
|
select timestampadd(WEEK, 1, date) from t1;
|
|
timestampadd(WEEK, 1, date)
|
|
2003-01-09
|
|
select timestampadd(SQL_TSI_SECOND, 1, date) from t1;
|
|
timestampadd(SQL_TSI_SECOND, 1, date)
|
|
2003-01-02 00:00:01
|
|
select timestampadd(SQL_TSI_FRAC_SECOND, 1, date) from t1;
|
|
timestampadd(SQL_TSI_FRAC_SECOND, 1, date)
|
|
2003-01-02 00:00:00.000001
|
|
Warnings:
|
|
Warning 1287 The syntax 'FRAC_SECOND' is deprecated and will be removed in MySQL 6.2. Please use MICROSECOND instead
|
|
select timestampdiff(MONTH, '2001-02-01', '2001-05-01') as a;
|
|
a
|
|
3
|
|
select timestampdiff(YEAR, '2002-05-01', '2001-01-01') as a;
|
|
a
|
|
-1
|
|
select timestampdiff(QUARTER, '2002-05-01', '2001-01-01') as a;
|
|
a
|
|
-5
|
|
select timestampdiff(MONTH, '2000-03-28', '2000-02-29') as a;
|
|
a
|
|
0
|
|
select timestampdiff(MONTH, '1991-03-28', '2000-02-29') as a;
|
|
a
|
|
107
|
|
select timestampdiff(SQL_TSI_WEEK, '2001-02-01', '2001-05-01') as a;
|
|
a
|
|
12
|
|
select timestampdiff(SQL_TSI_HOUR, '2001-02-01', '2001-05-01') as a;
|
|
a
|
|
2136
|
|
select timestampdiff(SQL_TSI_DAY, '2001-02-01', '2001-05-01') as a;
|
|
a
|
|
89
|
|
select timestampdiff(SQL_TSI_MINUTE, '2001-02-01 12:59:59', '2001-05-01 12:58:59') as a;
|
|
a
|
|
128159
|
|
select timestampdiff(SQL_TSI_SECOND, '2001-02-01 12:59:59', '2001-05-01 12:58:58') as a;
|
|
a
|
|
7689539
|
|
select timestampdiff(SQL_TSI_FRAC_SECOND, '2001-02-01 12:59:59.120000', '2001-05-01 12:58:58.119999') as a;
|
|
a
|
|
7689538999999
|
|
Warnings:
|
|
Warning 1287 The syntax 'FRAC_SECOND' is deprecated and will be removed in MySQL 6.2. Please use MICROSECOND instead
|
|
select timestampdiff(SQL_TSI_DAY, '1986-02-01', '1986-03-01') as a1,
|
|
timestampdiff(SQL_TSI_DAY, '1900-02-01', '1900-03-01') as a2,
|
|
timestampdiff(SQL_TSI_DAY, '1996-02-01', '1996-03-01') as a3,
|
|
timestampdiff(SQL_TSI_DAY, '2000-02-01', '2000-03-01') as a4;
|
|
a1 a2 a3 a4
|
|
28 28 29 29
|
|
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:27');
|
|
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:27')
|
|
0
|
|
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:28');
|
|
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:28')
|
|
1
|
|
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:29');
|
|
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:29')
|
|
1
|
|
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:27');
|
|
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:27')
|
|
1
|
|
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:28');
|
|
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:28')
|
|
2
|
|
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:29');
|
|
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:29')
|
|
2
|
|
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:27');
|
|
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:27')
|
|
0
|
|
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:28');
|
|
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:28')
|
|
1
|
|
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:29');
|
|
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:29')
|
|
1
|
|
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:27');
|
|
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:27')
|
|
1
|
|
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:28');
|
|
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:28')
|
|
2
|
|
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:29');
|
|
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:29')
|
|
2
|
|
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:27');
|
|
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:27')
|
|
0
|
|
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:28');
|
|
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:28')
|
|
1
|
|
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:29');
|
|
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:29')
|
|
1
|
|
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:27');
|
|
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:27')
|
|
1
|
|
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:28');
|
|
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:28')
|
|
2
|
|
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:29');
|
|
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:29')
|
|
2
|
|
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:27');
|
|
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:27')
|
|
0
|
|
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:28');
|
|
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:28')
|
|
1
|
|
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:29');
|
|
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:29')
|
|
1
|
|
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:27');
|
|
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:27')
|
|
1
|
|
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:28');
|
|
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:28')
|
|
2
|
|
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:29');
|
|
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:29')
|
|
2
|
|
select date_add(time,INTERVAL 1 SECOND) from t1;
|
|
date_add(time,INTERVAL 1 SECOND)
|
|
NULL
|
|
Warnings:
|
|
Warning 1264 Out of range value 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 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 YES NULL
|
|
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 filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 select period_add('9602',-(12)) AS `period_add("9602",-12)`,period_diff(199505,'9404') AS `period_diff(199505,"9404")`,from_days(to_days('960101')) AS `from_days(to_days("960101"))`,dayofmonth('1997-01-02') AS `dayofmonth("1997-01-02")`,month('1997-01-02') AS `month("1997-01-02")`,monthname('1972-03-04') AS `monthname("1972-03-04")`,dayofyear('0000-00-00') AS `dayofyear("0000-00-00")`,hour('1997-03-03 23:03:22') AS `HOUR("1997-03-03 23:03:22")`,minute('23:03:22') AS `MINUTE("23:03:22")`,second(230322) AS `SECOND(230322)`,quarter(980303) AS `QUARTER(980303)`,week('1998-03-03',0) AS `WEEK("1998-03-03")`,yearweek('2000-01-01',1) AS `yearweek("2000-01-01",1)`,week(19950101,1) AS `week(19950101,1)`,year('98-02-03') AS `year("98-02-03")`,(weekday(curdate()) - weekday(now())) AS `weekday(curdate())-weekday(now())`,dayname('1962-03-03') AS `dayname("1962-03-03")`,unix_timestamp() AS `unix_timestamp()`,sec_to_time((time_to_sec('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('1997-01-02 03:04:05','%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('1994-03-02 10:11:12')) AS `from_unixtime(unix_timestamp("1994-03-02 10:11:12"))`,('1997-12-31 23:59:59' + interval 1 second) AS `"1997-12-31 23:59:59" + INTERVAL 1 SECOND`,('1998-01-01 00:00:00' - interval 1 second) AS `"1998-01-01 00:00:00" - INTERVAL 1 SECOND`,('1997-12-31' + interval 1 day) AS `INTERVAL 1 DAY + "1997-12-31"`,extract(year from '1999-01-02 10:11:12') AS `extract(YEAR FROM "1999-01-02 10:11:12")`,('1997-12-31 23:59:59' + interval 1 second) AS `date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND)`
|
|
SET @TMP='2007-08-01 12:22:49';
|
|
CREATE TABLE t1 (d DATETIME);
|
|
INSERT INTO t1 VALUES ('2007-08-01 12:22:59');
|
|
INSERT INTO t1 VALUES ('2007-08-01 12:23:01');
|
|
INSERT INTO t1 VALUES ('2007-08-01 12:23:20');
|
|
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 Incorrect datetime value: '2005-00-00'
|
|
select last_day('2005-00-01');
|
|
last_day('2005-00-01')
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Incorrect datetime value: '2005-00-01'
|
|
select last_day('2005-01-00');
|
|
last_day('2005-01-00')
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Incorrect datetime value: '2005-01-00'
|
|
select monthname(str_to_date(null, '%m')), monthname(str_to_date(null, '%m')),
|
|
monthname(str_to_date(1, '%m')), monthname(str_to_date(0, '%m'));
|
|
monthname(str_to_date(null, '%m')) monthname(str_to_date(null, '%m')) monthname(str_to_date(1, '%m')) monthname(str_to_date(0, '%m'))
|
|
NULL NULL January NULL
|
|
set time_zone='-6:00';
|
|
create table t1(a timestamp);
|
|
insert into t1 values (19691231190001);
|
|
select * from t1;
|
|
a
|
|
1969-12-31 19:00:01
|
|
drop table t1;
|
|
create table t1(f1 date, f2 time, f3 datetime);
|
|
insert into t1 values ("2006-01-01", "12:01:01", "2006-01-01 12:01:01");
|
|
insert into t1 values ("2006-01-02", "12:01:02", "2006-01-02 12:01:02");
|
|
select f1 from t1 where f1 between CAST("2006-1-1" as date) and CAST(20060101 as date);
|
|
f1
|
|
2006-01-01
|
|
select f1 from t1 where f1 between cast("2006-1-1" as date) and cast("2006.1.1" as date);
|
|
f1
|
|
2006-01-01
|
|
select f1 from t1 where date(f1) between cast("2006-1-1" as date) and cast("2006.1.1" as date);
|
|
f1
|
|
2006-01-01
|
|
select f2 from t1 where f2 between cast("12:1:2" as time) and cast("12:2:2" as time);
|
|
f2
|
|
12:01:02
|
|
select f2 from t1 where time(f2) between cast("12:1:2" as time) and cast("12:2:2" as time);
|
|
f2
|
|
12:01:02
|
|
select f3 from t1 where f3 between cast("2006-1-1 12:1:1" as datetime) and cast("2006-1-1 12:1:2" as datetime);
|
|
f3
|
|
2006-01-01 12:01:01
|
|
select f3 from t1 where timestamp(f3) between cast("2006-1-1 12:1:1" as datetime) and cast("2006-1-1 12:1:2" as datetime);
|
|
f3
|
|
2006-01-01 12:01:01
|
|
select f1 from t1 where cast("2006-1-1" as date) between f1 and f3;
|
|
f1
|
|
2006-01-01
|
|
select f1 from t1 where cast("2006-1-1" as date) between date(f1) and date(f3);
|
|
f1
|
|
2006-01-01
|
|
select f1 from t1 where cast("2006-1-1" as date) between f1 and cast('zzz' as date);
|
|
f1
|
|
Warnings:
|
|
Warning 1292 Incorrect datetime value: 'zzz'
|
|
select f1 from t1 where makedate(2006,1) between date(f1) and date(f3);
|
|
f1
|
|
2006-01-01
|
|
select f1 from t1 where makedate(2006,2) between date(f1) and date(f3);
|
|
f1
|
|
2006-01-02
|
|
drop table t1;
|
|
create table t1 select now() - now(), curtime() - curtime(),
|
|
sec_to_time(1) + 0, from_unixtime(1) + 0;
|
|
show create table t1;
|
|
Table Create Table
|
|
t1 CREATE TABLE `t1` (
|
|
`now() - now()` double(23,6) NOT NULL DEFAULT '0.000000',
|
|
`curtime() - curtime()` double(23,6) NOT NULL DEFAULT '0.000000',
|
|
`sec_to_time(1) + 0` double(23,6) DEFAULT NULL,
|
|
`from_unixtime(1) + 0` double(23,6) DEFAULT NULL
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1
|
|
drop table t1;
|
|
SELECT SEC_TO_TIME(3300000);
|
|
SEC_TO_TIME(3300000)
|
|
838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '3300000'
|
|
SELECT SEC_TO_TIME(3300000)+0;
|
|
SEC_TO_TIME(3300000)+0
|
|
8385959.000000
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '3300000'
|
|
SELECT SEC_TO_TIME(3600 * 4294967296);
|
|
SEC_TO_TIME(3600 * 4294967296)
|
|
838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '15461882265600'
|
|
SELECT TIME_TO_SEC('916:40:00');
|
|
TIME_TO_SEC('916:40:00')
|
|
3020399
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '916:40:00'
|
|
SELECT ADDTIME('500:00:00', '416:40:00');
|
|
ADDTIME('500:00:00', '416:40:00')
|
|
838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '916:40:00'
|
|
SELECT ADDTIME('916:40:00', '416:40:00');
|
|
ADDTIME('916:40:00', '416:40:00')
|
|
838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '916:40:00'
|
|
Warning 1292 Truncated incorrect time value: '1255:39:59'
|
|
SELECT SUBTIME('916:40:00', '416:40:00');
|
|
SUBTIME('916:40:00', '416:40:00')
|
|
422:19:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '916:40:00'
|
|
SELECT SUBTIME('-916:40:00', '416:40:00');
|
|
SUBTIME('-916:40:00', '416:40:00')
|
|
-838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '-916:40:00'
|
|
Warning 1292 Truncated incorrect time value: '-1255:39:59'
|
|
SELECT MAKETIME(916,0,0);
|
|
MAKETIME(916,0,0)
|
|
838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '916:00:00'
|
|
SELECT MAKETIME(4294967296, 0, 0);
|
|
MAKETIME(4294967296, 0, 0)
|
|
838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '4294967296:00:00'
|
|
SELECT MAKETIME(-4294967296, 0, 0);
|
|
MAKETIME(-4294967296, 0, 0)
|
|
-838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '-4294967296:00:00'
|
|
SELECT MAKETIME(0, 4294967296, 0);
|
|
MAKETIME(0, 4294967296, 0)
|
|
NULL
|
|
SELECT MAKETIME(0, 0, 4294967296);
|
|
MAKETIME(0, 0, 4294967296)
|
|
NULL
|
|
SELECT MAKETIME(CAST(-1 AS UNSIGNED), 0, 0);
|
|
MAKETIME(CAST(-1 AS UNSIGNED), 0, 0)
|
|
838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '18446744073709551615:00:00'
|
|
SELECT EXTRACT(HOUR FROM '100000:02:03');
|
|
EXTRACT(HOUR FROM '100000:02:03')
|
|
838
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '100000:02:03'
|
|
CREATE TABLE t1(f1 TIME);
|
|
INSERT INTO t1 VALUES('916:00:00 a');
|
|
Warnings:
|
|
Warning 1265 Data truncated for column 'f1' at row 1
|
|
Warning 1264 Out of range value for column 'f1' at row 1
|
|
SELECT * FROM t1;
|
|
f1
|
|
838:59:59
|
|
DROP TABLE t1;
|
|
SELECT SEC_TO_TIME(CAST(-1 AS UNSIGNED));
|
|
SEC_TO_TIME(CAST(-1 AS UNSIGNED))
|
|
838:59:59
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect time value: '18446744073709551615'
|
|
SET NAMES latin1;
|
|
SET character_set_results = NULL;
|
|
SHOW VARIABLES LIKE 'character_set_results';
|
|
Variable_name Value
|
|
character_set_results
|
|
CREATE TABLE testBug8868 (field1 DATE, field2 VARCHAR(32) CHARACTER SET BINARY);
|
|
INSERT INTO testBug8868 VALUES ('2006-09-04', 'abcd');
|
|
SELECT DATE_FORMAT(field1,'%b-%e %l:%i%p') as fmtddate, field2 FROM testBug8868;
|
|
fmtddate field2
|
|
Sep-4 12:00AM abcd
|
|
DROP TABLE testBug8868;
|
|
SET NAMES DEFAULT;
|
|
CREATE TABLE t1 (
|
|
a TIMESTAMP
|
|
);
|
|
INSERT INTO t1 VALUES (now()), (now());
|
|
SELECT 1 FROM t1 ORDER BY MAKETIME(1, 1, a);
|
|
1
|
|
1
|
|
1
|
|
DROP TABLE t1;
|
|
(select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 DAY)),'%H') As H)
|
|
union
|
|
(select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 DAY)),'%H') As H);
|
|
H
|
|
120
|
|
(select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 DAY)),'%k') As H)
|
|
union
|
|
(select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 DAY)),'%k') As H);
|
|
H
|
|
120
|
|
(select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 HOUR)),'%H') As H)
|
|
union
|
|
(select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 HOUR)),'%H') As H);
|
|
H
|
|
05
|
|
(select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 HOUR)),'%k') As H)
|
|
union
|
|
(select time_format(timediff(now(), DATE_SUB(now(),INTERVAL 5 HOUR)),'%k') As H);
|
|
H
|
|
5
|
|
select last_day('0000-00-00');
|
|
last_day('0000-00-00')
|
|
NULL
|
|
select isnull(week(now() + 0)), isnull(week(now() + 0.2)),
|
|
week(20061108), week(20061108.01), week(20061108085411.000002);
|
|
isnull(week(now() + 0)) isnull(week(now() + 0.2)) week(20061108) week(20061108.01) week(20061108085411.000002)
|
|
0 0 45 45 45
|
|
End of 4.1 tests
|
|
explain extended select timestampdiff(SQL_TSI_WEEK, '2001-02-01', '2001-05-01') as a1,
|
|
timestampdiff(SQL_TSI_FRAC_SECOND, '2001-02-01 12:59:59.120000', '2001-05-01 12:58:58.119999') as a2;
|
|
id select_type table type possible_keys key key_len ref rows filtered Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Warning 1287 The syntax 'FRAC_SECOND' is deprecated and will be removed in MySQL 6.2. Please use MICROSECOND instead
|
|
Note 1003 select timestampdiff(WEEK,'2001-02-01','2001-05-01') AS `a1`,timestampdiff(SECOND_FRAC,'2001-02-01 12:59:59.120000','2001-05-01 12:58:58.119999') AS `a2`
|
|
select time_format('100:00:00', '%H %k %h %I %l');
|
|
time_format('100:00:00', '%H %k %h %I %l')
|
|
100 100 04 04 4
|
|
SET @old_log_bin_trust_function_creators= @@global.log_bin_trust_function_creators;
|
|
SET GLOBAL log_bin_trust_function_creators = 1;
|
|
create table t1 (a timestamp default '2005-05-05 01:01:01',
|
|
b timestamp default '2005-05-05 01:01:01');
|
|
drop function if exists t_slow_sysdate;
|
|
create function t_slow_sysdate() returns timestamp
|
|
begin
|
|
do sleep(2);
|
|
return sysdate();
|
|
end;
|
|
//
|
|
insert into t1 set a = sysdate(), b = t_slow_sysdate();//
|
|
create trigger t_before before insert on t1
|
|
for each row begin
|
|
set new.b = t_slow_sysdate();
|
|
end
|
|
//
|
|
insert into t1 set a = sysdate();
|
|
select a != b from t1;
|
|
a != b
|
|
1
|
|
1
|
|
drop trigger t_before;
|
|
drop function t_slow_sysdate;
|
|
drop table t1;
|
|
SET GLOBAL log_bin_trust_function_creators = 0;
|
|
create table t1 (a datetime, i int, b datetime);
|
|
insert into t1 select sysdate(), sleep(1), sysdate() from dual;
|
|
select a != b from t1;
|
|
a != b
|
|
1
|
|
drop table t1;
|
|
create procedure t_sysdate()
|
|
begin
|
|
select sysdate() into @a;
|
|
do sleep(2);
|
|
select sysdate() into @b;
|
|
select @a != @b;
|
|
end;
|
|
//
|
|
call t_sysdate();
|
|
@a != @b
|
|
1
|
|
drop procedure t_sysdate;
|
|
SET @@global.log_bin_trust_function_creators= @old_log_bin_trust_function_creators;
|
|
select timestampdiff(month,'2004-09-11','2004-09-11');
|
|
timestampdiff(month,'2004-09-11','2004-09-11')
|
|
0
|
|
select timestampdiff(month,'2004-09-11','2005-09-11');
|
|
timestampdiff(month,'2004-09-11','2005-09-11')
|
|
12
|
|
select timestampdiff(month,'2004-09-11','2006-09-11');
|
|
timestampdiff(month,'2004-09-11','2006-09-11')
|
|
24
|
|
select timestampdiff(month,'2004-09-11','2007-09-11');
|
|
timestampdiff(month,'2004-09-11','2007-09-11')
|
|
36
|
|
select timestampdiff(month,'2005-09-11','2004-09-11');
|
|
timestampdiff(month,'2005-09-11','2004-09-11')
|
|
-12
|
|
select timestampdiff(month,'2005-09-11','2003-09-11');
|
|
timestampdiff(month,'2005-09-11','2003-09-11')
|
|
-24
|
|
select timestampdiff(month,'2004-02-28','2005-02-28');
|
|
timestampdiff(month,'2004-02-28','2005-02-28')
|
|
12
|
|
select timestampdiff(month,'2004-02-29','2005-02-28');
|
|
timestampdiff(month,'2004-02-29','2005-02-28')
|
|
11
|
|
select timestampdiff(month,'2004-02-28','2005-02-28');
|
|
timestampdiff(month,'2004-02-28','2005-02-28')
|
|
12
|
|
select timestampdiff(month,'2004-03-29','2005-03-28');
|
|
timestampdiff(month,'2004-03-29','2005-03-28')
|
|
11
|
|
select timestampdiff(month,'2003-02-28','2004-02-29');
|
|
timestampdiff(month,'2003-02-28','2004-02-29')
|
|
12
|
|
select timestampdiff(month,'2003-02-28','2005-02-28');
|
|
timestampdiff(month,'2003-02-28','2005-02-28')
|
|
24
|
|
select timestampdiff(month,'1999-09-11','2001-10-10');
|
|
timestampdiff(month,'1999-09-11','2001-10-10')
|
|
24
|
|
select timestampdiff(month,'1999-09-11','2001-9-11');
|
|
timestampdiff(month,'1999-09-11','2001-9-11')
|
|
24
|
|
select timestampdiff(year,'1999-09-11','2001-9-11');
|
|
timestampdiff(year,'1999-09-11','2001-9-11')
|
|
2
|
|
select timestampdiff(year,'2004-02-28','2005-02-28');
|
|
timestampdiff(year,'2004-02-28','2005-02-28')
|
|
1
|
|
select timestampdiff(year,'2004-02-29','2005-02-28');
|
|
timestampdiff(year,'2004-02-29','2005-02-28')
|
|
0
|
|
CREATE TABLE t1 (id int NOT NULL PRIMARY KEY, day date);
|
|
CREATE TABLE t2 (id int NOT NULL PRIMARY KEY, day date);
|
|
INSERT INTO t1 VALUES
|
|
(1, '2005-06-01'), (2, '2005-02-01'), (3, '2005-07-01');
|
|
INSERT INTO t2 VALUES
|
|
(1, '2005-08-01'), (2, '2005-06-15'), (3, '2005-07-15');
|
|
SELECT * FROM t1, t2
|
|
WHERE t1.day BETWEEN
|
|
'2005.09.01' - INTERVAL 6 MONTH AND t2.day;
|
|
id day id day
|
|
1 2005-06-01 1 2005-08-01
|
|
3 2005-07-01 1 2005-08-01
|
|
1 2005-06-01 2 2005-06-15
|
|
1 2005-06-01 3 2005-07-15
|
|
3 2005-07-01 3 2005-07-15
|
|
SELECT * FROM t1, t2
|
|
WHERE CAST(t1.day AS DATE) BETWEEN
|
|
'2005.09.01' - INTERVAL 6 MONTH AND t2.day;
|
|
id day id day
|
|
1 2005-06-01 1 2005-08-01
|
|
3 2005-07-01 1 2005-08-01
|
|
1 2005-06-01 2 2005-06-15
|
|
1 2005-06-01 3 2005-07-15
|
|
3 2005-07-01 3 2005-07-15
|
|
DROP TABLE t1,t2;
|
|
set time_zone= @@global.time_zone;
|
|
select str_to_date('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE;
|
|
str_to_date('10:00 PM', '%h:%i %p') + INTERVAL 10 MINUTE
|
|
NULL
|
|
create table t1 (field DATE);
|
|
insert into t1 values ('2006-11-06');
|
|
select * from t1 where field < '2006-11-06 04:08:36.0';
|
|
field
|
|
2006-11-06
|
|
select * from t1 where field = '2006-11-06 04:08:36.0';
|
|
field
|
|
select * from t1 where field = '2006-11-06';
|
|
field
|
|
2006-11-06
|
|
select * from t1 where CAST(field as DATETIME) < '2006-11-06 04:08:36.0';
|
|
field
|
|
2006-11-06
|
|
select * from t1 where CAST(field as DATE) < '2006-11-06 04:08:36.0';
|
|
field
|
|
2006-11-06
|
|
drop table t1;
|
|
CREATE TABLE t1 (a int, t1 time, t2 time, d date, PRIMARY KEY (a));
|
|
INSERT INTO t1 VALUES (1, '10:00:00', NULL, NULL),
|
|
(2, '11:00:00', '11:15:00', '1972-02-06');
|
|
SELECT t1, t2, SEC_TO_TIME( TIME_TO_SEC( t2 ) - TIME_TO_SEC( t1 ) ), QUARTER(d)
|
|
FROM t1;
|
|
t1 t2 SEC_TO_TIME( TIME_TO_SEC( t2 ) - TIME_TO_SEC( t1 ) ) QUARTER(d)
|
|
10:00:00 NULL NULL NULL
|
|
11:00:00 11:15:00 00:15:00 1
|
|
SELECT t1, t2, SEC_TO_TIME( TIME_TO_SEC( t2 ) - TIME_TO_SEC( t1 ) ), QUARTER(d)
|
|
FROM t1 ORDER BY a DESC;
|
|
t1 t2 SEC_TO_TIME( TIME_TO_SEC( t2 ) - TIME_TO_SEC( t1 ) ) QUARTER(d)
|
|
11:00:00 11:15:00 00:15:00 1
|
|
10:00:00 NULL NULL NULL
|
|
DROP TABLE t1;
|
|
SELECT TIME_FORMAT(SEC_TO_TIME(a),"%H:%i:%s") FROM (SELECT 3020399 AS a UNION SELECT 3020398 ) x GROUP BY 1;
|
|
TIME_FORMAT(SEC_TO_TIME(a),"%H:%i:%s")
|
|
838:59:58
|
|
838:59:59
|
|
set names latin1;
|
|
create table t1 (a varchar(15) character set ascii not null);
|
|
insert into t1 values ('070514-000000');
|
|
select concat(a,ifnull(min(date_format(now(), '%Y-%m-%d')),' ull')) from t1;
|
|
concat(a,ifnull(min(date_format(now(), '%Y-%m-%d')),' ull'))
|
|
#
|
|
set names swe7;
|
|
select concat(a,ifnull(min(date_format(now(), '%Y-%m-%d')),' ull')) from t1;
|
|
ERROR HY000: Illegal mix of collations (ascii_general_ci,IMPLICIT) and (swe7_swedish_ci,COERCIBLE) for operation 'concat'
|
|
set names latin1;
|
|
set lc_time_names=fr_FR;
|
|
select concat(a,ifnull(min(date_format(now(), '%Y-%m-%d')),' ull')) from t1;
|
|
ERROR HY000: Illegal mix of collations (ascii_general_ci,IMPLICIT) and (latin1_swedish_ci,COERCIBLE) for operation 'concat'
|
|
set lc_time_names=en_US;
|
|
drop table t1;
|
|
select DATE_ADD('20071108181000', INTERVAL 1 DAY);
|
|
DATE_ADD('20071108181000', INTERVAL 1 DAY)
|
|
2007-11-09 18:10:00
|
|
select DATE_ADD(20071108181000, INTERVAL 1 DAY);
|
|
DATE_ADD(20071108181000, INTERVAL 1 DAY)
|
|
2007-11-09 18:10:00
|
|
select DATE_ADD('20071108', INTERVAL 1 DAY);
|
|
DATE_ADD('20071108', INTERVAL 1 DAY)
|
|
2007-11-09
|
|
select DATE_ADD(20071108, INTERVAL 1 DAY);
|
|
DATE_ADD(20071108, INTERVAL 1 DAY)
|
|
2007-11-09
|
|
select LAST_DAY('2007-12-06 08:59:19.05') - INTERVAL 1 SECOND;
|
|
LAST_DAY('2007-12-06 08:59:19.05') - INTERVAL 1 SECOND
|
|
2007-12-30 23:59:59
|
|
SELECT TIMESTAMPADD(FRAC_SECOND, 1, '2008-02-18');
|
|
TIMESTAMPADD(FRAC_SECOND, 1, '2008-02-18')
|
|
2008-02-18 00:00:00.000001
|
|
Warnings:
|
|
Warning 1287 The syntax 'FRAC_SECOND' is deprecated and will be removed in MySQL 6.2. Please use MICROSECOND instead
|
|
SELECT TIMESTAMPDIFF(FRAC_SECOND, '2008-02-17', '2008-02-18');
|
|
TIMESTAMPDIFF(FRAC_SECOND, '2008-02-17', '2008-02-18')
|
|
86400000000
|
|
Warnings:
|
|
Warning 1287 The syntax 'FRAC_SECOND' is deprecated and will be removed in MySQL 6.2. Please use MICROSECOND instead
|
|
SELECT DATE_ADD('2008-02-18', INTERVAL 1 FRAC_SECOND);
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FRAC_SECOND)' at line 1
|
|
SELECT DATE_SUB('2008-02-18', INTERVAL 1 FRAC_SECOND);
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FRAC_SECOND)' at line 1
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SELECT '2008-02-18' + INTERVAL 1 FRAC_SECOND;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FRAC_SECOND' at line 1
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SELECT '2008-02-18' - INTERVAL 1 FRAC_SECOND;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FRAC_SECOND' at line 1
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select date_add('1000-01-01 00:00:00', interval '1.03:02:01.05' day_microsecond);
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date_add('1000-01-01 00:00:00', interval '1.03:02:01.05' day_microsecond)
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1000-01-02 03:02:01.050000
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select date_add('1000-01-01 00:00:00', interval '1.02' day_microsecond);
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date_add('1000-01-01 00:00:00', interval '1.02' day_microsecond)
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1000-01-01 00:00:01.020000
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End of 5.0 tests
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select date_sub("0050-01-01 00:00:01",INTERVAL 2 SECOND);
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date_sub("0050-01-01 00:00:01",INTERVAL 2 SECOND)
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0049-12-31 23:59:59
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select date_sub("0199-01-01 00:00:01",INTERVAL 2 SECOND);
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date_sub("0199-01-01 00:00:01",INTERVAL 2 SECOND)
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0198-12-31 23:59:59
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select date_add("0199-12-31 23:59:59",INTERVAL 2 SECOND);
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date_add("0199-12-31 23:59:59",INTERVAL 2 SECOND)
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0200-01-01 00:00:01
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select date_sub("0200-01-01 00:00:01",INTERVAL 2 SECOND);
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date_sub("0200-01-01 00:00:01",INTERVAL 2 SECOND)
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0199-12-31 23:59:59
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select date_sub("0200-01-01 00:00:01",INTERVAL 1 SECOND);
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date_sub("0200-01-01 00:00:01",INTERVAL 1 SECOND)
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0200-01-01 00:00:00
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select date_sub("0200-01-01 00:00:01",INTERVAL 2 SECOND);
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date_sub("0200-01-01 00:00:01",INTERVAL 2 SECOND)
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0199-12-31 23:59:59
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select date_add("2001-01-01 23:59:59",INTERVAL -2000 YEAR);
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date_add("2001-01-01 23:59:59",INTERVAL -2000 YEAR)
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0001-01-01 23:59:59
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select date_sub("50-01-01 00:00:01",INTERVAL 2 SECOND);
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date_sub("50-01-01 00:00:01",INTERVAL 2 SECOND)
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2049-12-31 23:59:59
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select date_sub("90-01-01 00:00:01",INTERVAL 2 SECOND);
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date_sub("90-01-01 00:00:01",INTERVAL 2 SECOND)
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1989-12-31 23:59:59
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select date_sub("0069-01-01 00:00:01",INTERVAL 2 SECOND);
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date_sub("0069-01-01 00:00:01",INTERVAL 2 SECOND)
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0068-12-31 23:59:59
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select date_sub("0169-01-01 00:00:01",INTERVAL 2 SECOND);
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date_sub("0169-01-01 00:00:01",INTERVAL 2 SECOND)
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0168-12-31 23:59:59
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End of 5.1 tests
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