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create function [dbo].[DeptTree](@initDeptCode  varchar(10))/*¶¨Ò庯Êýc_tree£¬ÊäÈë²ÎÊýΪ³õʼ½ÚµãDeptCode*/
returns @t table(DeptCode varchar(10),UpDeptCode  varchar(10),lev int)/*¶¨Òå±ítÓÃÀ´´æ·ÅÈ¡³öµÄÊý¾Ý*/
begin
  declare @i int/*±êÖ¾µÝ¹é¼¶±ð*/
  set @i=1
  insert @t select DeptCode,UpDeptCode,@i from vi_dept where DeptCode=@initDeptCode
  while @@rowcount<>0
  begin
  set @i=@i+1
  insert @t select a.DeptCode,a.UpDeptCode,@i from vi_dept as a,@t as b
 where b.DeptCode=a.UpDeptCode and b.lev=@i-1
  end
return
end
 select * from dbo.DeptTree('0000')


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SQL ServerÈÕÆÚ

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SELECT DATEADD(mm, DATEDIFF(mm,0,getdate()), 0) 
--- ±¾ÖܵÄÐÇÆÚÒ»
SELECT DATEADD(wk, DATEDIFF(wk,0,getdate()), 0)
---Ò»ÄêµÄµÚÒ»Ìì
SELECT DATEADD(yy, DATEDIFF(yy,0,getdate()), 0)
----¼¾¶ÈµÄµÚÒ»Ìì
SELECT DATEADD(qq, DATEDIFF(qq,0,getdate()), 0)
----ÉϸöÔµÄ×îºóÒ»Ìì
......

SQL Serverº¯Êý´óÈ«

--¾ÛºÏº¯Êý
use pubs
go
select avg(distinct price)  --ËãÆ½¾ùÊý
from titles
where type='business'
go 
use pubs
go
select max(ytd_sales)  --×î´óÊý
from titles
go 
use pubs
go
select min(ytd_sales) --×îÐ¡Ê ......

SQL round()Ïê½â


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SQL round()Ïê½â
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select round(748.585929,-1) 750.000000
select round(748.58592 ......

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cmd>net start mssqlserver
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cmd>net start mssql$[instance name]
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cmd>net stop mssqlserver
cmd>net stop mssql$[instance name] ......
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