实现split功能的函数

/*
功能：实现split功能的函数
*/

create function dbo.fn_split
(
@inputstr varchar(8000),
@seprator varchar(10)
)
returns @temp table (a varchar(200))
as

begin
declare @i int

set @inputstr = rtrim(ltrim(@inputstr))
set @i = charindex(@seprator, @inputstr)

while @i >= 1
begin
insert @temp values(left(@inputstr, @i - 1))

set @inputstr = substring(@inputstr, @i + 1, len(@inputstr) - @i)
set @i = charindex(@seprator, @inputstr)
end

if @inputstr <> '/'
insert @temp values(@inputstr)

return
end
go

--调用

declare @s varchar(1000)

set @s='1,2,43,5,4,3'

select a pid,hid = 3 from dbo.fn_split(@s,',')

drop function dbo.fn_split

/*
pid hid
------- -----
1 3
2 3
43 3
5 3
4 3
3 3

（所影响的行数为 6 行）

*/