Errors when using query variables.

Question

Recently in about half the queries I write with variables the variables will not work. For example:
SELECT O.DocNum
          ,O.CardCode
          ,O.CardName
          ,P.PrioDesc AS 'Priority'
          ,O.DocDueDate
          ,O.DocTotal
          ,O.U_Engineering_Appvd     
          ,O.Confirmed AS 'Approved'
          ,O.U_Purchase_Reviewed
FROM ORDR AS O
     JOIN OCRD AS BP ON O.CardCode = BP.CardCode
     LEFT JOIN OBPP AS P ON BP.Priority = P.PrioCode
WHERE O.SlpCode =  18 AND
O.DocStatus = 'O'
Works perfectly, but when I make the change from "O.SlpCode = 18" to "O.SlpCode = [%0]" it complete fails with a red bar of death. The error I receive is: Incorrect syntax near '0'  Statement 'Service Contracts' (OCTR) (s) could not be prepared.
Like I said, this isn't for every query, just about half of them. Any help would be appreciated as this is rather important.
Thanks!!
Monica

Answer 1

Hi.
Try this:
SELECT * 
FROM ORDR T0 
  INNER JOIN OCRD T1 ON T0.CardCode = T1.CardCode
  LEFT JOIN OBPP T2 ON T1.Priority = T2.PrioCode
WHERE T0.[DocStatus] = 'O' AND T0.[SlpCode] LIKE [%0]
Or this one:
SELECT O.DocNum,
  O.CardCode,
  O.CardName,
  P.PrioDesc AS 'Priority',
  O.DocDueDate,
  O.DocTotal,
  O.U_Engineering_Appvd,
  O.Confirmed AS 'Approved',
  O.U_Purchase_Reviewed
FROM ORDR AS O
  INNER JOIN OCRD AS BP ON O.CardCode = BP.CardCode
  LEFT JOIN OBPP AS P ON BP.Priority = P.PrioCode
WHERE O.DocStatus = 'O' AND O.SlpCode LIKE [%0]
Also, check the name of User Fields are right.
Regards.