mssql row_number() partition ʹÓ÷½·¨Àí½â
Sql2005ÖÐʹÓÃow_number() partition½øÐзÖ×éʵÑ飬
SQL£º
select * from stu
select id,row_number() over (partition by snm order by id) from stu
½á¹û£º
id snm
----------------
111 111V
111 111W
222 222N
333 3123
444 3123
555 3123
666 3232
777 3232
--·Ö×éºóµÄ½á¹û
id
------------
111 1
111 1
222 1
333 1
444 2
555 3
666 1
777 2
¿ÉÒÔ×¢Òâµ½·Ö×éºÍÌØÊâ±ê¼ÇµÄ½á¹ûÈçÉÏÃæËùʾ
Ïà¹ØÎĵµ£º
½ñÌìÔÚÁÄÌìϵͳÖÐÐèҪϵͳִÐÐÒ»¸ö¶à²ãǶÌײéѯ¡£
Ò»¿ªÊ¼Óï¾äÈçÏÂ×ܳöÏÖ´íÎó£ºÔÀ´ÊÇÔÚ]='123') ºóÎÒ¶à¼ÓÁËÒ»¸ö as tb1
¸ÄΪÈçϺó£¬ÕýÈ·ÔËÐС£
select * from ( select top(10) * from ( select top(100) * from (select [chatcontent].[senderid],[chatcontent].[id] ,[chatcontent].[toid] ,[chatc ......
SQL Server ÌṩϵͳÊý¾ÝÀàÐͼ¯£¬¶¨ÒåÁË¿ÉÓë SQL Server Ò»ÆðʹÓõÄËùÓÐÊý¾ÝÀàÐÍ¡£ÏÂÃæÁгöϵͳÌṩµÄÊý¾ÝÀàÐͼ¯¡£
¿ÉÒÔ¶¨ÒåÓû§¶¨ÒåµÄÊý¾ÝÀàÐÍ£¬ÆäÊÇϵͳÌṩµÄÊý¾ÝÀàÐ͵ıðÃû¡£ÓйØÓû§¶¨ÒåµÄÊý¾ÝÀàÐ͵ĸü¶àÐÅÏ¢£¬Çë²Î¼û sp_addtype ºÍ´´½¨Óû§¶¨ÒåµÄÊý¾ÝÀàÐÍ¡£
µ±Á½¸ö¾ßÓв»Í¬Êý¾ÝÀàÐÍ¡¢ÅÅÐò¹æÔò¡¢¾«¶È¡¢Ð¡ÊýλÊý»ò³ ......
selectÓï¾äǰ¼Ó£º
declare @d datetime
set @d=getdate()
²¢ÔÚselectÓï¾äºó¼Ó£º
select [Óï¾äÖ´Ðл¨·Ñʱ¼ä(ºÁÃë)]=datediff(ms,@d,getdate())
ת×Ô£º¶¯Ì¬ÍøÖÆ×÷Ö¸ÄÏ www.knowsky.com
ÕâÊǼòÒ׵IJ鿴ִÐÐʱ¼äµÄ·½·¨¡£
===========================================£¨Ò»ÏÂÄÚÈÝת×Ô£º£Ã£Ó£Ä£Î£©
MSSQL ServerÖÐͨ¹ý²é ......
1.
--½«ºº×Öת»»ÎªÆ´ÒôÊ××Öĸ
CREATE function GetAllPY(@str nvarchar(4000))
returns nvarchar(4000)
--WITH ENCRYPTION
as
begin
declare @intLen int
declare @strRet nvarchar(4000)
declare @temp nvarchar(100)
set @intLen &nb ......