func_time.result

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

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 sql_no_cache period_add(_latin1'9602',-(12)) AS `period_add("9602",-12)`,period_diff(199505,_latin1'9404') AS `period_diff(199505,"9404")`,from_days(to_days(_latin1'960101')) AS `from_days(to_days("960101"))`,dayofmonth(_latin1'1997-01-02') AS `dayofmonth("1997-01-02")`,month(_latin1'1997-01-02') AS `month("1997-01-02")`,monthname(_latin1'1972-03-04') AS `monthname("1972-03-04")`,dayofyear(_latin1'0000-00-00') AS `dayofyear("0000-00-00")`,hour(_latin1'1997-03-03 23:03:22') AS `HOUR("1997-03-03 23:03:22")`,minute(_latin1'23:03:22') AS `MINUTE("23:03:22")`,second(230322) AS `SECOND(230322)`,quarter(980303) AS `QUARTER(980303)`,week(_latin1'1998-03-03',0) AS `WEEK("1998-03-03")`,yearweek(_latin1'2000-01-01',1) AS `yearweek("2000-01-01",1)`,week(19950101,1) AS `week(19950101,1)`,year(_latin1'98-02-03') AS `year("98-02-03")`,(weekday(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;
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