日期:2014-05-18 浏览次数:20560 次
alter function fn_getStr(@v int) returns varchar(32) begin declare @retValue varchar(32) set @retValue ='' if (@v is not null) begin declare @s varchar(16), @l tinyint, @i tinyint set @i = 1 set @s =convert(varchar(16),@v) set @l = len(@s) while(@i<=@l) begin set @retValue = @retValue + substring(@s,@i,1)+',' --print @retValue set @i = @i + 1 end end return left(@retValue,len(@retValue)-1) end select dbo.fn_getStr(123) -------------------------------- 1,2,3,4 (1 行受影响)
------解决方案--------------------
--> 测试数据: #tb if object_id('tempdb.dbo.#tb') is not null drop table #tb create table #tb ([val] varchar(10)) set nocount on insert into #tb select '1234' declare @Num table(id int) insert into @Num select number from master..spt_values where number between 1 and 100 and type='p' set nocount off declare @str varchar(100) select @str=isnull(@str+','+element,element) from ( select SUBSTRING(val,id,1) element from #tb a join @Num b on SUBSTRING(val,id,1)<>'') as T print(@str) --结果 /* 1,2,3,4 */