-----------创建实现split功能 的函数------------
create function f_split(@SourceSql varchar(8000),@StrSeprate varchar(10))
returns @temp table(a varchar(100))
as
begin
declare @i int
set @SourceSql=rtrim(ltrim(@SourceSql))
set @i=charindex(@StrSeprate,@SourceSql)
while @i>=1
begin
insert @temp values(left(@SourceSql,@i-1))
set @SourceSql=substring(@SourceSql,@i+1,len(@SourceSql)-@i)
set @i=charindex(@StrSeprate,@SourceSql)
end
if @SourceSql<>''
insert @temp values(@SourceSql)
return
end
GO
-----------创建实现split并去重功能 的函数------------
create function SplitAndDistinct(@SourceStr varchar(500),@StrSeprate varchar(10))
returns varchar(500)
AS
begin
declare @pos int
declare @ret varchar(20)
declare @table table(ret varchar(20))
declare @SplitAndDistinctStr varchar(500)
select @SourceStr = @SourceStr + @StrSeprate
select @pos = charindex(@StrSeprate,@SourceStr)
while @pos > 0
begin
select @ret = substring(@SourceStr,1,@pos-1)
insert into @table select @ret
select @SourceStr = stuff(@SourceStr,1,@pos,'')
select @pos = charindex(@StrSeprate,@SourceStr)
end
select @SplitAndDistinctStr = ''
select @SplitAndDistinctStr = @SplitAndDistinctStr + @StrSeprate + ret from (select distinct ret from @table) t
return @SplitAndDistinctStr
end
GO
-----------测试------------
select distinct * from dbo.f_split('123|abc|000|777|000 |111', '|')
Go
select dbo.SplitAndDistinct('123|abc|000|777|000|111 ', '|')
GO