You can do something like this:
Code:
CREATE procedure dbo.SpLaLaMonitor
@TestDate smalldatetime= '11/24/00 11:00'
AS
Declare @Result1 int
Declare @Result2 int
SELECT
@Result1 = COUNT(*)
FROM
dev1.dbo.vw_look_txn
WHERE
vendor_err='x' and created_dt > @TestDate
SELECT
@Result2 = COUNT(*)
FROM
Merchant_Order mo join Order_Line ol on ol.Order_ID = mo.Order_ID
WHERE
La_To_La = 1 and mo.Modified_Date > @TestDate
If @Result1 <> @Result2
Begin
Return 1000 --Return any error number you want
End
Else
Begin
Return 0 --Return success number here
End