SQL创建字段信息(表值函数)

 ALTER FUNCTION [dbo].[fnt_SplitString]
 (
     @p1 varchar(Max),
     @p3 varchar(255)
 )
 RETURNS
 @Table_Var TABLE
 (
     c1 varchar(max)
 )
 AS
 BEGIN
     declare @p2 varchar(max)
     set @p2=rtrim(ltrim(@p1))
     declare @pos1 int
     declare @pos2 int
     set @pos1=1
     set @pos2=1
     while (@pos1<len(@p2))
     begin
         set @pos1=charindex(@p3,@p2)
         if (@pos1=0)
         begin
             insert into @table_var values(@p2)
             set @pos1=len(@p2)
         end
         else
         begin
             insert into @table_var values(left(@p2,@pos1-1))
             set @p2=right(@p2,len(@p2)-@pos1)
             set @pos1=0
         end
     end
     RETURN
 END

 '调用方式
 Select C1,(Row_Number() Over(Order By @@Cursor_Rows)) As C2 From dbo.Fnt_SplitString('ID,WBS,Quantity,MPSNO,Attribute,FileContent,MaterielName,MaterielCode,ExportAccount',',')

 方法二：
1 ALTER function [dbo].[SplitString]
 (
     @Input nvarchar(max),
     @Separator nvarchar(max)=',',
     @RemoveEmptyEntries bit=
 )
 returns @TABLE table
 (
     [Id] int identity(,),
     [Value] nvarchar(max)
 )
 as
 begin
     declare @Index int, @Entry nvarchar(max)
     set @Index = charindex(@Separator,@Input)

     while (@Index>)
     begin
         set @Entry=ltrim(rtrim(substring(@Input, , @Index-)))

         if (@RemoveEmptyEntries=) or (@RemoveEmptyEntries= and @Entry<>'')
             begin
                 insert into @TABLE([Value]) Values(@Entry)
             end

         set @Input = substring(@Input, @Index+datalength(@Separator)/, len(@Input))
         set @Index = charindex(@Separator, @Input)
     end

     set @Entry=ltrim(rtrim(@Input))
     if (@RemoveEmptyEntries=) or (@RemoveEmptyEntries= and @Entry<>'')
         begin
             insert into @TABLE([Value]) Values(@Entry)
         end

     return
 end

 Select * From [dbo].[SplitString]('ID,WBS,Quantity,MPSNO,Attribute,FileContent,MaterielName,MaterielCode,ExportAccount',',',)