---------------------------------------------------------------------
-- Author : htl258(Tony)
-- Date : 2010-04-28 23:22:15
-- Version:Microsoft SQL Server 2008 (RTM) - 10.0.1600.22 (Intel X86)
-- Jul 9 2008 14:43:34
-- Copyright (c) 1988-2008 Microsoft Corporation
-- Developer Edition on Windows NT 5.1 <X86> (Build 2600: Service Pack 3)
-- Blog : http://blog.csdn/htl258
-- Subject: 应用实例：去掉字段中多个带区号电话号码前面的区号
--------------------------------------------------------------------
--需求贴：http://topic.csdn.net/u/20100428/20/f2572998-099c-463a-a530-707a40606c9c.html?53227
--> 生成数据表:tb
IF NOT OBJECT_ID('[tb]') IS NULL
DROP TABLE [tb]
CREATE TABLE [tb]([name] NVARCHAR(10),[phone] NVARCHAR(40))
INSERT [tb]
SELECT 'a',N'010-12345678/0571-86919111' UNION ALL
SELECT 'b',N'020-23950423/0756-34972654/023-89732456'
GO
--SELECT * FROM [tb]
-->SQL查询如下:
--1.创建自定义函数
IF NOT OBJECT_ID('[f_getphone]') IS NULL
DROP FUNCTION [f_getphone]
GO
CREATE FUNCTION f_getphone(@s varchar(200))
RETURNS varchar(200)
AS
BEGIN
SET @s=@s+'/'
DECLARE @r VARCHAR(200)
WHILE CHARINDEX('/',@s)>0
SELECT @r=ISNULL(@r+'/','')
+LEFT(STUFF(@s,1,CHARINDEX('-',@s),'')
,CHARINDEX('/',@s)-CHARINDEX('-',@s)-1)
,@s=STUFF(@s,1,CHARINDEX('/',@s),'')
RETURN @r
END
GO
--2.查询
SELECT [name],dbo.f_getphone(phone) 'phone' FROM TB
/*
name phone
---------- ------------------------------------
a 12345678/86919111
b 23950423/34972654/89732456
(2 行受影响)
*/