Sql Server 数据库日期格式化函数

Select CONVERT(varchar(100),GETDATE(),0) : 05 16 2006 10:57AM

Select CONVERT(varchar(100),1) : 05/16/06

Select CONVERT(varchar(100),2) : 06.05.16

Select CONVERT(varchar(100),3) : 16/05/06

Select CONVERT(varchar(100),4) : 16.05.06

Select CONVERT(varchar(100),5) : 16-05-06

Select CONVERT(varchar(100),6) : 16 05 06

Select CONVERT(varchar(100),7) : 05 16,06

Select CONVERT(varchar(100),GETDATE() : 10:57:46

Select CONVERT(varchar(100),9): 05 16 2006 10:57:46:827AM

Select CONVERT(varchar(100),10): 05-16-06

Select CONVERT(varchar(100),11): 06/05/16

Select CONVERT(varchar(100),12): 060516

Select CONVERT(varchar(100),13): 16 05 2006 10:57:46:937

Select CONVERT(varchar(100),14): 10:57:46:967

Select CONVERT(varchar(100),20): 2006-05-16 10:57:47

Select CONVERT(varchar(100),21): 2006-05-16 10:57:47.157

Select CONVERT(varchar(100),22): 05/16/06 10:57:47 AM

Select CONVERT(varchar(100),23): 2006-05-16

Select CONVERT(varchar(100),24): 10:57:47

Select CONVERT(varchar(100),25): 2006-05-16 10:57:47.250

Select CONVERT(varchar(100),100): 05 16 2006 10:57AM

Select CONVERT(varchar(100),101): 05/16/2006

Select CONVERT(varchar(100),102): 2006.05.16

Select CONVERT(varchar(100),103): 16/05/2006

Select CONVERT(varchar(100),104): 16.05.2006

Select CONVERT(varchar(100),105): 16-05-2006

Select CONVERT(varchar(100),106): 16 05 2006

Select CONVERT(varchar(100),107): 05 16,2006

Select CONVERT(varchar(100),108): 10:57:49

Select CONVERT(varchar(100),109): 05 16 2006 10:57:49:437AM

Select CONVERT(varchar(100),110): 05-16-2006

Select CONVERT(varchar(100),111): 2006/05/16

Select CONVERT(varchar(100),112): 20060516

Select CONVERT(varchar(100),113): 16 05 2006 10:57:49:513

Select CONVERT(varchar(100),114): 10:57:49:547

Select CONVERT(varchar(100),120): 2006-05-16 10:57:49

Select CONVERT(varchar(100),121): 2006-05-16 10:57:49.700

Select CONVERT(varchar(100),126): 2006-05-16T10:57:49.827

Select CONVERT(varchar(100),130): 18 ???? ?????? 1427 10:57:49:907AM

Select CONVERT(varchar(100),131): 18/04/1427 10:57:49:920AM

常用：

Select CONVERT(varchar(100),GETDATE(): 10:57:46

Select CONVERT(varchar(100),23): 2006-05-16

存储过程中常用知识点:

循环

declare @i int

set @i=1

while @i<30

begin

insert into test (userid) values(@i)

set @i=@i+1

end

用变量代替表名的方法

declare @fld nvarchar(255)

declare @sql nvarchar(255)

select @fld = 'userName'

select @sql = 'select ' + @fld + ' from tbl'

exec sp_executesql @sql

备份收缩数据库

backup log register with NO_LOG

backup log register with TRUNCATE_ONLY

DBCC SHRINKDATABASE(register)

SELECT [id],[gnname],rtrim([url]) as url,[gnsm],[gnqx] FROM [bg_gnmx]

rtrim() //去掉右边的空格

ltrim() //去掉左边的空格

注意:使用函数后,必须对其他使用别名

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