mirror of
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90cb4c03fd
The problem was that we restored SQL_CACHE, SQL_NO_CACHE flags in SELECT statement from internal structures based on value set later at runtime, not the original value set by the user. The solution is to remember that original value. mysql-test/r/auto_increment.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/func_compress.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/func_math.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/func_system.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/func_time.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/information_schema.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/query_cache.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/rpl_get_lock.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/rpl_master_pos_wait.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/show_check.result: Add result for bug#17203. mysql-test/r/subselect.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/type_blob.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/variables.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/r/view.result: Update result to not report SQL_NO_CACHE if it wasn't there at first place. mysql-test/t/show_check.test: Add test case for bug#17203. sql/sql_lex.cc: Reset SELECT_LEX::sql_cache together with SELECT_LEX::options. sql/sql_lex.h: Add SELECT_LEX::sql_cache field to store original user setting. sql/sql_select.cc: Output SQL_CACHE and SQL_NO_CACHE depending on stored original user setting. sql/sql_yacc.yy: Make effect of SQL_CACHE and SQL_NO_CACHE mutually exclusive. Ignore SQL_CACHE if SQL_NO_CACHE was used. Remember what was set by the user. Reset SELECT_LEX::sql_cache together with SELECT_LEX::options.
949 lines
41 KiB
Text
949 lines
41 KiB
Text
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
|
|
select date_sub("1998-01-01 00:00:00",INTERVAL "1 1" YEAR_MONTH);
|
|
date_sub("1998-01-01 00:00:00",INTERVAL "1 1" YEAR_MONTH)
|
|
1996-12-01 00:00:00
|
|
select date_sub("1998-01-01 00:00:00",INTERVAL "1:1:1" HOUR_SECOND);
|
|
date_sub("1998-01-01 00:00:00",INTERVAL "1:1:1" HOUR_SECOND)
|
|
1997-12-31 22:58:59
|
|
select date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1" DAY_MINUTE);
|
|
date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1" DAY_MINUTE)
|
|
1997-12-30 22:59:00
|
|
select date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1:1" DAY_SECOND);
|
|
date_sub("1998-01-01 00:00:00",INTERVAL "1 1:1:1" DAY_SECOND)
|
|
1997-12-30 22:58:59
|
|
select date_add("1997-12-31 23:59:59",INTERVAL 100000 SECOND);
|
|
date_add("1997-12-31 23:59:59",INTERVAL 100000 SECOND)
|
|
1998-01-02 03:46:39
|
|
select date_add("1997-12-31 23:59:59",INTERVAL -100000 MINUTE);
|
|
date_add("1997-12-31 23:59:59",INTERVAL -100000 MINUTE)
|
|
1997-10-23 13:19:59
|
|
select date_add("1997-12-31 23:59:59",INTERVAL 100000 HOUR);
|
|
date_add("1997-12-31 23:59:59",INTERVAL 100000 HOUR)
|
|
2009-05-29 15:59:59
|
|
select date_add("1997-12-31 23:59:59",INTERVAL -100000 DAY);
|
|
date_add("1997-12-31 23:59:59",INTERVAL -100000 DAY)
|
|
1724-03-17 23:59:59
|
|
select date_add("1997-12-31 23:59:59",INTERVAL 100000 MONTH);
|
|
date_add("1997-12-31 23:59:59",INTERVAL 100000 MONTH)
|
|
NULL
|
|
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 Truncated 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")
|
|
225101112
|
|
select extract(HOUR FROM "1999-01-02 10:11:12");
|
|
extract(HOUR FROM "1999-01-02 10:11:12")
|
|
10
|
|
select extract(HOUR_MINUTE FROM "10:11:12");
|
|
extract(HOUR_MINUTE FROM "10:11:12")
|
|
1011
|
|
select extract(HOUR_SECOND FROM "10:11:12");
|
|
extract(HOUR_SECOND FROM "10:11:12")
|
|
101112
|
|
select extract(MINUTE FROM "10:11:12");
|
|
extract(MINUTE FROM "10:11:12")
|
|
11
|
|
select extract(MINUTE_SECOND FROM "10:11:12");
|
|
extract(MINUTE_SECOND FROM "10:11:12")
|
|
1112
|
|
select extract(SECOND FROM "1999-01-02 10:11:12");
|
|
extract(SECOND FROM "1999-01-02 10:11:12")
|
|
12
|
|
select extract(MONTH FROM "2001-02-00");
|
|
extract(MONTH FROM "2001-02-00")
|
|
2
|
|
SELECT 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 "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 Truncated incorrect datetime value: ''
|
|
SELECT year(updated) from t1;
|
|
year(updated)
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect datetime value: ''
|
|
drop table t1;
|
|
create table t1 (d date, dt datetime, t timestamp, c char(10));
|
|
insert into t1 values ("0000-00-00", "0000-00-00", "0000-00-00", "0000-00-00");
|
|
select dayofyear("0000-00-00"),dayofyear(d),dayofyear(dt),dayofyear(t),dayofyear(c) from t1;
|
|
dayofyear("0000-00-00") dayofyear(d) dayofyear(dt) dayofyear(t) dayofyear(c)
|
|
NULL NULL NULL NULL NULL
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect datetime value: '0000-00-00'
|
|
Warning 1292 Truncated 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 Truncated incorrect datetime value: '0000-00-00'
|
|
Warning 1292 Truncated 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 Truncated incorrect datetime value: '0000-00-00'
|
|
Warning 1292 Truncated 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 Truncated incorrect datetime value: '0000-00-00'
|
|
Warning 1292 Truncated 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(2145916800);
|
|
from_unixtime(2145916800)
|
|
NULL
|
|
select from_unixtime(0);
|
|
from_unixtime(0)
|
|
1970-01-01 03:00:00
|
|
CREATE TABLE t1 (datetime datetime, timestamp timestamp, date date, time time);
|
|
INSERT INTO t1 values ("2001-01-02 03:04:05", "2002-01-02 03:04:05", "2003-01-02", "06:07:08");
|
|
SELECT * from t1;
|
|
datetime timestamp date time
|
|
2001-01-02 03:04:05 2002-01-02 03:04:05 2003-01-02 06:07:08
|
|
select date_add("1997-12-31",INTERVAL 1 SECOND);
|
|
date_add("1997-12-31",INTERVAL 1 SECOND)
|
|
1997-12-31 00:00:01
|
|
select date_add("1997-12-31",INTERVAL "1 1" YEAR_MONTH);
|
|
date_add("1997-12-31",INTERVAL "1 1" YEAR_MONTH)
|
|
1999-01-31
|
|
select date_add(datetime, INTERVAL 1 SECOND) from t1;
|
|
date_add(datetime, INTERVAL 1 SECOND)
|
|
2001-01-02 03:04:06
|
|
select date_add(datetime, INTERVAL 1 YEAR) from t1;
|
|
date_add(datetime, INTERVAL 1 YEAR)
|
|
2002-01-02 03:04:05
|
|
select date_add(date,INTERVAL 1 SECOND) from t1;
|
|
date_add(date,INTERVAL 1 SECOND)
|
|
2003-01-02 00:00:01
|
|
select date_add(date,INTERVAL 1 MINUTE) from t1;
|
|
date_add(date,INTERVAL 1 MINUTE)
|
|
2003-01-02 00:01:00
|
|
select date_add(date,INTERVAL 1 HOUR) from t1;
|
|
date_add(date,INTERVAL 1 HOUR)
|
|
2003-01-02 01:00:00
|
|
select date_add(date,INTERVAL 1 DAY) from t1;
|
|
date_add(date,INTERVAL 1 DAY)
|
|
2003-01-03
|
|
select date_add(date,INTERVAL 1 MONTH) from t1;
|
|
date_add(date,INTERVAL 1 MONTH)
|
|
2003-02-02
|
|
select date_add(date,INTERVAL 1 YEAR) from t1;
|
|
date_add(date,INTERVAL 1 YEAR)
|
|
2004-01-02
|
|
select date_add(date,INTERVAL "1:1" MINUTE_SECOND) from t1;
|
|
date_add(date,INTERVAL "1:1" MINUTE_SECOND)
|
|
2003-01-02 00:01:01
|
|
select date_add(date,INTERVAL "1:1" HOUR_MINUTE) from t1;
|
|
date_add(date,INTERVAL "1:1" HOUR_MINUTE)
|
|
2003-01-02 01:01:00
|
|
select date_add(date,INTERVAL "1:1" DAY_HOUR) from t1;
|
|
date_add(date,INTERVAL "1:1" DAY_HOUR)
|
|
2003-01-03 01:00:00
|
|
select date_add(date,INTERVAL "1 1" YEAR_MONTH) from t1;
|
|
date_add(date,INTERVAL "1 1" YEAR_MONTH)
|
|
2004-02-02
|
|
select date_add(date,INTERVAL "1:1:1" HOUR_SECOND) from t1;
|
|
date_add(date,INTERVAL "1:1:1" HOUR_SECOND)
|
|
2003-01-02 01:01:01
|
|
select date_add(date,INTERVAL "1 1:1" DAY_MINUTE) from t1;
|
|
date_add(date,INTERVAL "1 1:1" DAY_MINUTE)
|
|
2003-01-03 01:01:00
|
|
select date_add(date,INTERVAL "1 1:1:1" DAY_SECOND) from t1;
|
|
date_add(date,INTERVAL "1 1:1:1" DAY_SECOND)
|
|
2003-01-03 01:01:01
|
|
select date_add(date,INTERVAL "1" WEEK) from t1;
|
|
date_add(date,INTERVAL "1" WEEK)
|
|
2003-01-09 00:00:00
|
|
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 00:00:00
|
|
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
|
|
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
|
|
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 date_add(time,INTERVAL 1 SECOND) from t1;
|
|
date_add(time,INTERVAL 1 SECOND)
|
|
NULL
|
|
Warnings:
|
|
Warning 1264 Out of range value adjusted for column 'time' at row 1
|
|
drop table t1;
|
|
select last_day('2000-02-05') as f1, last_day('2002-12-31') as f2,
|
|
last_day('2003-03-32') as f3, last_day('2003-04-01') as f4,
|
|
last_day('2001-01-01 01:01:01') as f5, last_day(NULL),
|
|
last_day('2001-02-12');
|
|
f1 f2 f3 f4 f5 last_day(NULL) last_day('2001-02-12')
|
|
2000-02-29 2002-12-31 NULL 2003-04-30 2001-01-31 NULL 2001-02-28
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect datetime value: '2003-03-32'
|
|
create table t1 select last_day('2000-02-05') as a,
|
|
from_days(to_days("960101")) as b;
|
|
describe t1;
|
|
Field Type Null Key Default Extra
|
|
a date NO 0000-00-00
|
|
b date YES NULL
|
|
select * from t1;
|
|
a b
|
|
2000-02-29 1996-01-01
|
|
drop table t1;
|
|
select last_day('2000-02-05') as a,
|
|
from_days(to_days("960101")) as b;
|
|
a b
|
|
2000-02-29 1996-01-01
|
|
select date_add(last_day("1997-12-1"), INTERVAL 1 DAY);
|
|
date_add(last_day("1997-12-1"), INTERVAL 1 DAY)
|
|
1998-01-01
|
|
select length(last_day("1997-12-1"));
|
|
length(last_day("1997-12-1"))
|
|
10
|
|
select last_day("1997-12-1")+0;
|
|
last_day("1997-12-1")+0
|
|
19971231
|
|
select last_day("1997-12-1")+0.0;
|
|
last_day("1997-12-1")+0.0
|
|
19971231.0
|
|
select strcmp(date_sub(localtimestamp(), interval 3 hour), utc_timestamp())=0;
|
|
strcmp(date_sub(localtimestamp(), interval 3 hour), utc_timestamp())=0
|
|
1
|
|
select strcmp(date_format(date_sub(localtimestamp(), interval 3 hour),"%T"), utc_time())=0;
|
|
strcmp(date_format(date_sub(localtimestamp(), interval 3 hour),"%T"), utc_time())=0
|
|
1
|
|
select strcmp(date_format(date_sub(localtimestamp(), interval 3 hour),"%Y-%m-%d"), utc_date())=0;
|
|
strcmp(date_format(date_sub(localtimestamp(), interval 3 hour),"%Y-%m-%d"), utc_date())=0
|
|
1
|
|
select strcmp(date_format(utc_timestamp(),"%T"), utc_time())=0;
|
|
strcmp(date_format(utc_timestamp(),"%T"), utc_time())=0
|
|
1
|
|
select strcmp(date_format(utc_timestamp(),"%Y-%m-%d"), utc_date())=0;
|
|
strcmp(date_format(utc_timestamp(),"%Y-%m-%d"), utc_date())=0
|
|
1
|
|
select strcmp(concat(utc_date(),' ',utc_time()),utc_timestamp())=0;
|
|
strcmp(concat(utc_date(),' ',utc_time()),utc_timestamp())=0
|
|
1
|
|
explain extended select period_add("9602",-12),period_diff(199505,"9404"),from_days(to_days("960101")),dayofmonth("1997-01-02"), month("1997-01-02"), monthname("1972-03-04"),dayofyear("0000-00-00"),HOUR("1997-03-03 23:03:22"),MINUTE("23:03:22"),SECOND(230322),QUARTER(980303),WEEK("1998-03-03"),yearweek("2000-01-01",1),week(19950101,1),year("98-02-03"),weekday(curdate())-weekday(now()),dayname("1962-03-03"),unix_timestamp(),sec_to_time(time_to_sec("0:30:47")/6.21),curtime(),utc_time(),curdate(),utc_date(),utc_timestamp(),date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w"),from_unixtime(unix_timestamp("1994-03-02 10:11:12")),"1997-12-31 23:59:59" + INTERVAL 1 SECOND,"1998-01-01 00:00:00" - INTERVAL 1 SECOND,INTERVAL 1 DAY + "1997-12-31", extract(YEAR FROM "1999-01-02 10:11:12"),date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 select period_add(_latin1'9602',-(12)) AS `period_add("9602",-12)`,period_diff(199505,_latin1'9404') AS `period_diff(199505,"9404")`,from_days(to_days(_latin1'960101')) AS `from_days(to_days("960101"))`,dayofmonth(_latin1'1997-01-02') AS `dayofmonth("1997-01-02")`,month(_latin1'1997-01-02') AS `month("1997-01-02")`,monthname(_latin1'1972-03-04') AS `monthname("1972-03-04")`,dayofyear(_latin1'0000-00-00') AS `dayofyear("0000-00-00")`,hour(_latin1'1997-03-03 23:03:22') AS `HOUR("1997-03-03 23:03:22")`,minute(_latin1'23:03:22') AS `MINUTE("23:03:22")`,second(230322) AS `SECOND(230322)`,quarter(980303) AS `QUARTER(980303)`,week(_latin1'1998-03-03',0) AS `WEEK("1998-03-03")`,yearweek(_latin1'2000-01-01',1) AS `yearweek("2000-01-01",1)`,week(19950101,1) AS `week(19950101,1)`,year(_latin1'98-02-03') AS `year("98-02-03")`,(weekday(curdate()) - weekday(now())) AS `weekday(curdate())-weekday(now())`,dayname(_latin1'1962-03-03') AS `dayname("1962-03-03")`,unix_timestamp() AS `unix_timestamp()`,sec_to_time((time_to_sec(_latin1'0:30:47') / 6.21)) AS `sec_to_time(time_to_sec("0:30:47")/6.21)`,curtime() AS `curtime()`,utc_time() AS `utc_time()`,curdate() AS `curdate()`,utc_date() AS `utc_date()`,utc_timestamp() AS `utc_timestamp()`,date_format(_latin1'1997-01-02 03:04:05',_latin1'%M %W %D %Y %y %m %d %h %i %s %w') AS `date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w")`,from_unixtime(unix_timestamp(_latin1'1994-03-02 10:11:12')) AS `from_unixtime(unix_timestamp("1994-03-02 10:11:12"))`,(_latin1'1997-12-31 23:59:59' + interval 1 second) AS `"1997-12-31 23:59:59" + INTERVAL 1 SECOND`,(_latin1'1998-01-01 00:00:00' - interval 1 second) AS `"1998-01-01 00:00:00" - INTERVAL 1 SECOND`,(_latin1'1997-12-31' + interval 1 day) AS `INTERVAL 1 DAY + "1997-12-31"`,extract(year from _latin1'1999-01-02 10:11:12') AS `extract(YEAR FROM "1999-01-02 10:11:12")`,(_latin1'1997-12-31 23:59:59' + interval 1 second) AS `date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND)`
|
|
SET @TMP=NOW();
|
|
CREATE TABLE t1 (d DATETIME);
|
|
INSERT INTO t1 VALUES (NOW());
|
|
INSERT INTO t1 VALUES (NOW());
|
|
INSERT INTO t1 VALUES (NOW());
|
|
SELECT count(*) FROM t1 WHERE d>FROM_DAYS(TO_DAYS(@TMP)) AND d<=FROM_DAYS(TO_DAYS(@TMP)+1);
|
|
count(*)
|
|
3
|
|
DROP TABLE t1;
|
|
select last_day('2005-00-00');
|
|
last_day('2005-00-00')
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect datetime value: '2005-00-00'
|
|
select last_day('2005-00-01');
|
|
last_day('2005-00-01')
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect datetime value: '2005-00-01'
|
|
select last_day('2005-01-00');
|
|
last_day('2005-01-00')
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect datetime value: '2005-01-00'
|
|
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
|
|
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 "2006-1-1" and 20060101;
|
|
f1
|
|
2006-01-01
|
|
select f1 from t1 where f1 between "2006-1-1" and "2006.1.1";
|
|
f1
|
|
2006-01-01
|
|
select f1 from t1 where date(f1) between "2006-1-1" and "2006.1.1";
|
|
f1
|
|
2006-01-01
|
|
select f2 from t1 where f2 between "12:1:2" and "12:2:2";
|
|
f2
|
|
12:01:02
|
|
select f2 from t1 where time(f2) between "12:1:2" and "12:2:2";
|
|
f2
|
|
12:01:02
|
|
select f3 from t1 where f3 between "2006-1-1 12:1:1" and "2006-1-1 12:1:2";
|
|
f3
|
|
2006-01-01 12:01:01
|
|
select f3 from t1 where timestamp(f3) between "2006-1-1 12:1:1" and "2006-1-1 12:1:2";
|
|
f3
|
|
2006-01-01 12:01:01
|
|
select f1 from t1 where "2006-1-1" between f1 and f3;
|
|
f1
|
|
2006-01-01
|
|
select f1 from t1 where "2006-1-1" between date(f1) and date(f3);
|
|
f1
|
|
2006-01-01
|
|
select f1 from t1 where "2006-1-1" between f1 and 'zzz';
|
|
f1
|
|
Warnings:
|
|
Warning 1292 Incorrect date value: 'zzz' for column 'f1' at row 1
|
|
Warning 1292 Truncated incorrect DOUBLE value: 'zzz'
|
|
Warning 1292 Truncated incorrect DOUBLE 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;
|
|
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 Extra
|
|
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
|
|
Warnings:
|
|
Note 1003 select timestampdiff(WEEK,_latin1'2001-02-01',_latin1'2001-05-01') AS `a1`,timestampdiff(SECOND_FRAC,_latin1'2001-02-01 12:59:59.120000',_latin1'2001-05-01 12:58:58.119999') AS `a2`
|
|
select last_day('2005-00-00');
|
|
last_day('2005-00-00')
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect datetime value: '2005-00-00'
|
|
select last_day('2005-00-01');
|
|
last_day('2005-00-01')
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect datetime value: '2005-00-01'
|
|
select last_day('2005-01-00');
|
|
last_day('2005-01-00')
|
|
NULL
|
|
Warnings:
|
|
Warning 1292 Truncated incorrect datetime value: '2005-01-00'
|
|
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
|
|
create table t1 (a timestamp default '2005-05-05 01:01:01',
|
|
b timestamp default '2005-05-05 01:01:01');
|
|
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;
|
|
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;
|
|
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
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|
(1, '2005-08-01'), (2, '2005-06-15'), (3, '2005-07-15');
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SELECT * FROM t1, t2
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WHERE t1.day BETWEEN
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|
'2005.09.01' - INTERVAL 6 MONTH AND t2.day;
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|
id day id day
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|
1 2005-06-01 1 2005-08-01
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|
3 2005-07-01 1 2005-08-01
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|
1 2005-06-01 2 2005-06-15
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|
1 2005-06-01 3 2005-07-15
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|
3 2005-07-01 3 2005-07-15
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|
SELECT * FROM t1, t2
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|
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;
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|
set time_zone= @@global.time_zone;
|