Crystal Report: Multiple Join in Table

Question

Hi experts,
I have a problem adding a table in a report.
The layout I'm modifing is the Purchase Order (CR). The report contains the necessary tables linked via the Database Expert to OPOR master table.
I need to add the Vendor Item Code in the OSCN table. To reach he correct code I have TWO values: ItemCode and CardCode.
ItemCode is in the POR1 row, and CardCode is in OPOR table.
I tried to add the table and link CardCode between OPOR and OSCN, and the field ItemCode between POR1 and OSCN but crystal say me that, he cannot join a just joined table!
So, how can I add the table OSCN linked correctly in the existing report ti dislay the correct Vendor Item Code near the ItemCode from OITM?
Thanks for your answers.

Answer 1

hi Jonny,
paste this to your SQL query window to create this Stored Procedure
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:          <Author,,Name>
-- Create date: <Create Date,,>
-- Description:     <Description,,>
-- =============================================
CREATE PROCEDURE [dbo].[YourSP_Name]
AS
BEGIN
     SET NOCOUNT ON;
     SELECT     OPOR.DocNum, POR1.DocEntry, POR1.LineNum, POR1.ItemCode, OPOR.CardCode, OSCN.Substitute
     FROM         OPOR INNER JOIN
                      POR1 ON OPOR.DocEntry = POR1.DocEntry INNER JOIN
                      OSCN ON OPOR.CardCode = OSCN.CardCode AND POR1.ItemCode = OSCN.ItemCode INNER JOIN
                      OITM ON OSCN.ItemCode = OITM.ItemCode
     ORDER BY POR1.DocEntry
END
GO
then call this stored procedure in Crystal report
regards,
Fidel