Help with a sql search query using a comma delimitted parameter

Question

I am looking for something like this but can\'t figure out the best way to write the query:

SELECT DISTINCT CategoryID FROM tbl_Categories c INNER JOIN 
  ma         


        

Answer 1

Not sure if it's really that what you want as your question is a bit unclear.

DECLARE @SQL NVARCHAR(MAX) 
DECLARE @IDs NVARCHAR(MAX)

SET @IDs = '234,245,645'

SET @SQL = 'SELECT DISTINCT CategoryID FROM tbl_Categories c INNER JOIN 
  mappingTable mp ON c.CategoryID = mp.CategoryID INNER JOIN
  SubCategories sc ON mp.SubCategoryID = sc.SubCategoryID
WHERE sc.SubcategoryID IN  (' + @IDs + ')'


exec (@sql)