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

DECLARE @Delimitedtext varchar(max);
DECLARE @Delimiter char(1);
SET @Delimitedtext = '234,245,645,';
SET @Delimiter = ',';

;WITH Strings(s, r)
AS
(
SELECT
SUBSTRING(@Delimitedtext,1, CHARINDEX(@Delimiter, @Delimitedtext)-1) s,
SUBSTRING(@Delimitedtext,CHARINDEX(@Delimiter, @Delimitedtext)+1, len(@Delimitedtext)) r
UNION ALL
SELECT
SUBSTRING(r,1, CHARINDEX(@Delimiter, r)-1) s,
SUBSTRING(r,CHARINDEX(@Delimiter, r)+1, len(r)) r
FROM Strings
WHERE
CHARINDEX(@Delimiter, r) > 0
)

SELECT  CategoryId
FROM    (
            SELECT  c.CategoryID
            FROM    tbl_Categories c 
            JOIN    mappingTable mp 
                ON  c.CategoryID = mp.CategoryID 
            JOIN    SubCategories sc 
                ON  mp.SubCategoryID = sc.SubCategoryID
            WHERE   sc.SubcategoryID IN (SELECT s FROM Strings)
        ) x
GROUP BY CategoryId
HAVING COUNT(*) = (SELECT count(*) FROM Strings)

String-split copy from here. Note that you need a trailing ','.

Other implementations of string-split may be better for you, but this shows how to handle the 'ALL'-condition.