-------------------建表--------------------------
use tttt
create table CursorTest
(
id int identity(1,1),
name varchar(20)
)
insert into CursorTest(name) values('xxxx')
insert into CursorTest(name) values('yyyyy')
insert into CursorTest(name) values('zzzzz')
insert into CursorTest(name) values('gggggg')
insert into CursorTest(name) values('hhhh')
insert into CursorTest(name) values('lllll')
create table StringSplit
(
idd varchar(20)，
countt int
)
insert into StringSplit values('1,2',0)
insert into StringSplit values('1,3',1)
insert into StringSplit values('1,2,3',2)
---------------------sql字符串分割---------------------------
USE [tttt]
GO
/****** 对象: UserDefinedFunction [dbo].[f_split] 脚本日期: 02/24/2009 10:14:42 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER function [dbo].[f_split](@c varchar(2000),@split varchar(2))--@c表示字符串,@split表示分隔符
returns @t table(col varchar(20)) ----返回一个表，用这个表来存储分割出来的所有数据
as
begin
while(charindex(@split,@c)<>0)----当分隔符的索引不等于0时
begin
insert @t(col) values (substring(@c,1,charindex(@split,@c)-1))----分割出来的单个字符
set @c = stuff(@c,1,charindex(@split,@c),'')----设置分割后的字符串
end
insert @t(col) values (@c) ----把分割出来的单个字符插入到表@t表
return
end
----执行f_split函数
select * from f_split('1,2',',')
--------------------用游标来查出函数f_split返回table里每行字符为条件的详细信息-----------
alter PROCEDURE [dbo].[Test]
(@numm int)
AS
BEGIN
select idd from StringSplit where countt=@numm
DECLARE LineCodeSelect CURSOR FOR ---声明LineCodeSelect游标
select idd from StringSplit where countt=@numm---返回一个集合，或者是一条记录
OPEN LineCodeSelect ---打开游标
DECLARE @LineCode VARCHAR(max)
FETCH NEXT FROM LineCodeSelect---从游标LineCodeSelect提取数据
INTO @LineCode
IF(@LineCode <> '')
BEGIN
SELECT id,name
FROM dbo.f_split(@LineCode,',')
LEFT JOIN CursorTest ON col = id
SET @LineCode = ''
END
WHILE @@FETCH_STATUS = 0 ---fetch语句成功
BEGIN
FETCH NEXT FROM LineCodeSelect
INTO @LineCode
IF(@LineCode <> '')
BEGIN
SELECT id,name
FROM dbo.f_split(@LineCode,',')
LEFT JOIN CursorTest ON col = id
SET @LineCode = ''
END
end
CLOSE LineCodeSelect---关闭游标
DEALLOCATE LineCodeSelect----释放游标
End
-----执行存储过程Test
exec Test 0
