am looking for the best, or most efficient way to implement a store procedure where I have several calculated fields and would like to use those fields in the where clause to filter on.
Any help will be greatly appreciated. Thank You..
example part of the SP:
@ID AS INT,
@Year AS SMALLINT ,
@FYTD_Min DECIMAL(18,2) = NULL,
@CYTD_Min DECIMAL(18,2) = NULL,
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
CASE when (Pt.Year = @Year AND Pt.month IN (1,2,3,4,5,6,7,8,9,10,11,12)) THEN
END AS FYTD,
WHEN (Pt.Year = @Year - 1 AND Pt.month IN (7,8,9,10,11,12) OR Pt.Year = @Year AND Pt.month IN (1,2,3,4,5,6) ) THEN
END AS CYTD
FROM Payment_Table AS Pt
LEFT OUTER JOIN Addres_Table AS At
WHERE Pt.ID = @ID
AND Pt.Year = @year
AND ((FYTD = @FYTD_Min) OR @FYTD_Min IS NULL)) ********
AND ((CYTD = @CYTD_Min) OR @CYTD_Min IS NULL)) ********
GROUP By Pt.ID
***** IF the user leave the FYTD and CYTD field blank then all records are returned. If the user enter an amount then its filter base on the amount entered.
I am not sure if you have to use CTE, Temp table or another clever method. Also how is the best way to initialize the parameters (@FYTD_Min, @CYTD_Min) for
this situation.. Thank you