Question

My problem is that I want to merge two SPs in one. the skeleton of the resulting sp is:

 with Paging(RowNo, ID, Name, Description, LengthSeconds, Rating, Url, ThumbnailFileName, AddedAt) AS
    (
     (if(@SortType is null)
      begin
         ... select ... 
      end
      else 
      begin
        ... select...
      end
    )

   select * from Paging ... 

Can I do that If in the with statement?

Answer 1

No,,, it would be something like

with Paging(RowNo, ID, Name, Description, LengthSeconds, Rating, Url, ThumbnailFileName, AddedAt) AS
(
     select ... 

     WHERE @SortType is not null
     UNION ALL
     select ... 

     WHERE @SortType is null
)...

If the query is that simple though, then you wouldn’t need a CTE: it doesn’t add any readibility