sqlserver自定义函数

USE [BooksBrothersWebOrder]
GO
/****** Object:  UserDefinedFunction [dbo].[fx_GetCHSizeData]    Script Date: 07/24/2012 09:15:11 ******/
SET QUOTED_IDENTIFIER ON
GO

/*
Name:   dbo.fx_GetCHSizeData
Description: --处理Size 的CH数据
Parameters:    
 @CH VARCHAR(20)
Return Values:      
 @CONTENT
Ref. Tables:

-------------------------------------------------------------------------------------------------     
Author Name:

Creation Date:  

Modification Log: 
Example:
 select * from  dbo.fx_GetCHSizeData('BB000574,BB000543')
 select * from  dbo.fx_GetCHSizeData('170/96B/ 170')

*/

ALTER               FUNCTION [dbo].[fx_GetCHSizeData]
(
 @RefNoList  VARCHAR(100)
)
RETURNS @CHData TABLE
(
 CH VARCHAR(20),
 CN  VARCHAR(10),
 CN2 VARCHAR(10) 
)
AS
BEGIN 
 DECLARE @CH VARCHAR(20),@RIndex INT,@RefNo CHAR(8)
 SELECT @RefNoList=@RefNoList+','
 SELECT @RIndex=CHARINDEX(',',@RefNoList) 
 WHILE @RIndex>0
 BEGIN
  --循环读取
  SELECT @RefNo=SUBSTRING(@RefNoList,1,@RIndex-1) 
  SELECT @RefNoList=SUBSTRING(@RefNoList,@RIndex+1,LEN(@RefNoList)-@RIndex)
  SELECT @RIndex=CHARINDEX(',',@RefNoList)

  DECLARE myCursor CURSOR FOR
  SELECT DISTINCT D.CH
  FROM dbo.M_SizeDetail D
   LEFT JOIN dbo.O_OrderSize S ON D.SizeCode=S.SizeCode AND D.Inseam=S.Inseam AND D.USA=S.USA AND D.SizeType=S.SizeType
  WHERE S.RefNo =@RefNo
 
  OPEN myCursor
  FETCH NEXT FROM myCursor INTO @CH
  WHILE @@FETCH_STATUS=0
  BEGIN 

       DECLARE @tmpCH VARCHAR(20),@CH1 VARCHAR(10), @CH2 VARCHAR(10),@Index INT,@CharIndex INT
   SELECT @CH1='',@CH2='',@Index=0,@tmpCH=@CH
   
   WHILE CHARINDEX('/',@tmpCH)>0
   BEGIN
    SELECT @CharIndex=CHARINDEX('/',@tmpCH),@Index=@Index+1
    IF @Index<3 SELECT @CH1=@CH1+SUBSTRING(@tmpCH,1,@CharIndex)
    IF @Index>2 SELECT @CH2=@CH2+LTRIM(SUBSTRING(@tmpCH,1,@CharIndex))
    SELECT @tmpCH=SUBSTRING(@tmpCH,@CHarIndex+1,LEN(@tmpCH)-@CharIndex)
   END
  
   IF LEN(@tmpCH)>0
   BEGIN
    SELECT @Index=@Index+1
    IF @Index<3 SELECT @CH1=@CH1+@tmpCH
    IF @Index>2 SELECT @CH2=@CH2+LTRIM(@tmpCH)
   END 
   
   INSERT INTO @CHData SELECT @CH,@CH1,@CH2
   FETCH NEXT FROM myCursor INTO @CH
  END
  CLOSE myCursor                   --关闭游标
  DEALLOCATE myCursor
 END
 RETURN --@Content

END