遇到一个德国的客户,他们的时间格式是JJJJ-TT-DD HH:MM:SS,程序按照这个格式将时间插入数据库,但是在sql自带的转换函数convert、cast过程中报错,网上搜了下都说用convert、cast可以直接转换,但是这个客户的机器就是不行,没有办法自己写了个转换函数,供大家参考:

由于自定义函数里面不能直接使用getdate方法;所以先创建了个获取本地时间的小函数: 

 create view v_getdate as select getdate() as now_date  

然后是转换函数:

 1 CREATE  FUNCTION ToDateTime(@DateStr varchar(20))
 2 RETURNS datetime 
 3 AS  
 4 BEGIN 
 5 declare @OutTime datetime
 6 select @OutTime=now_date from v_getdate
 7 if(len(@DateStr)<20)
 8   set @DateStr=substring(@DateStr+' 00:00:00',1,20)
 9 set @OutTime=dateadd(year,0-year(@OutTime)+cast(substring(@DateStr,1,4) as int),@OutTime)
10 set @OutTime=dateadd(month,0-month(@OutTime)+cast(substring(@DateStr,6,2) as int),@OutTime)
11 set @OutTime=dateadd(day,0-day(@OutTime)+cast(substring(@DateStr,9,2) as int),@OutTime)
12 set @OutTime=dateadd(hour,0-DATEPART(HH,@OutTime)+cast(substring(@DateStr,12,2) as int),@OutTime)
13 set @OutTime=dateadd(minute,0-DATEPART(N,@OutTime)+cast(substring(@DateStr,15,2) as int),@OutTime)
14 set @OutTime=dateadd(second,0-DATEPART(S,@OutTime)+cast(substring(@DateStr,19,2) as int),@OutTime)
15 return @OutTime
16 END

 调用示例:select dbo.ToDateTime('2014-04-05 06:07:08')

posted on 2014-05-08 15:21  IT高级民工  阅读(1852)  评论(0编辑  收藏  举报