SQL - using a variable for an IN clause

Question

I wish to do something like the following:

declare @FrameNumber nvarchar(20)
set @FrameNumber = \'(p1, p2)\'

select from myTable where c1 in @FrameNumber
         


        

Answer 1

I have another solution to do with split function,

DECLARE @FrameNumber NVARCHAR(20)
SET @FrameNumber = 'p1,p2'

SELECT * FROM MyTable WHERE ProductCode IN 
(SELECT Value FROM fn_Split(@FrameNumber, ','))

OutPut:

Split Functions:

CREATE FUNCTION fn_Split (
    @String VARCHAR(8000)
    ,@Delimiter CHAR(1)
    )
RETURNS @temptable TABLE (Value VARCHAR(8000))
AS
BEGIN
    DECLARE @idx INT
    DECLARE @slice VARCHAR(8000)

    SELECT @idx = 1

    IF len(@String) < 1
        OR @String IS NULL
        RETURN

    WHILE @idx != 0
    BEGIN
        SET @idx = charindex(@Delimiter, @String)

        IF @idx != 0
            SET @slice = left(@String, @idx - 1)
        ELSE
            SET @slice = @String

        IF (len(@slice) > 0)
            INSERT INTO @temptable (Value)
            VALUES (@slice)

        SET @String = right(@String, len(@String) - @idx)

        IF len(@String) = 0
            BREAK
    END

    RETURN
END