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Crystal Reports - Link one field to two different tables

Posted on 2008-10-24
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We are using Crystal Reports 7 and I have three tables that I need to link together.  One table has production scrap information.  The other two have the production order information.  They are linked by the production order number.  One of the production order tables has all the past orders, the other one has the current orders.  The scrap table contains the info for all orders.  I would like to be able to link both of the order tables to the scrap table, so that if the production order number from the scrap table is not found in the current order table, it will pull it from the past order table.  Is this possible?  Thanks.

~bruno71
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Question by:bruno71
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10 Comments
 
LVL 18

Expert Comment

by:UnifiedIS
ID: 22795959
You'll want to left join both production order tables to the scrap table, then use a formula to determine which production order number to show on the report.

If ISNULL(Current production order #) = TRUE then
Old Production Order #
ELSE Current production order #
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Author Comment

by:bruno71
ID: 22796254
I tried that, but it is still only showing data from one or the other table.

~bruno71
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LVL 77

Expert Comment

by:peter57r
ID: 22796383
That is what you said you wanted...

"if the production order number from the scrap table is not found in the current order table, it will pull it from the past order table"
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LVL 101

Expert Comment

by:mlmcc
ID: 22796395
As stated you need to LEFT OUTER JOIN the tables

The SQL should look like

FROM ScrapTable LEFT OUTER JOIN CurrentProd ON ScrapTable.OrderID = CurrentProd.OrderID LEFT OUTER JOIN PastOrders ON ScrapTable.OrderId = PastOrders.OrderId

In the report just put fields from oth CurrentProd and PastOrders.  If one is NULL you wil not see the data.

mlmcc
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Author Comment

by:bruno71
ID: 22796872
When I run the report, it either shows only data from the past orders table or only data from the current orders table.  It depends on which order number field I put in the details section (past or current).  If I put both (or use the formula as stated above) it just pulls from the last table it used.

Here is the SQL from the report...


SELECT
    GW_SCRAP."CutterOp", GW_SCRAP."Shift", GW_SCRAP."CutDate", GW_SCRAP."TotalPcsCut", GW_SCRAP."CutterScrap", GW_SCRAP."TotalScrap", GW_SCRAP."MachineNum", GW_SCRAP."Burn", GW_SCRAP."Lag", GW_SCRAP."Obstruction", GW_SCRAP."CutOff", GW_SCRAP."OpError", GW_SCRAP."Damage", GW_SCRAP."WireBreak", GW_SCRAP."DoveTail", GW_SCRAP."Thin", GW_SCRAP."Other", GW_SCRAP."Comment", GW_SCRAP."WaterSpots", GW_SCRAP."PoorFusion", GW_SCRAP."ColorContamination", GW_SCRAP."Camber",
    sfordfil_sql."ord_no",
    PPORDFIL_SQL."ord_no",
    IMITMIDX_SQL."drawing_release_no"
FROM
    { oj (("DATA"."dbo"."GW_SCRAP" GW_SCRAP LEFT OUTER JOIN "DATA"."dbo"."PPORDFIL_SQL" PPORDFIL_SQL ON
        GW_SCRAP."ProdOrdNum" = PPORDFIL_SQL."ord_no")
     LEFT OUTER JOIN "DATA"."dbo"."sfordfil_sql" sfordfil_sql ON
        GW_SCRAP."ProdOrdNum" = sfordfil_sql."ord_no")
     INNER JOIN "DATA"."dbo"."IMITMIDX_SQL" IMITMIDX_SQL ON
        sfordfil_sql."item_no" = IMITMIDX_SQL."item_no"}
WHERE
    GW_SCRAP."CutDate" >= 20080901 AND
    GW_SCRAP."CutDate" <= 20081031
ORDER BY
    GW_SCRAP."CutDate" ASC,
    GW_SCRAP."Shift" ASC,
    GW_SCRAP."CutterOp" ASC

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LVL 101

Expert Comment

by:mlmcc
ID: 22797291
That makes sense unless I am missing something.  I would suspect when an order is complete it gets moved from the Current table to the Past table.  Therefore an order only exists in one table.

mlmcc
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Author Comment

by:bruno71
ID: 22797399
Sort of...actually we moved to a new type of production system.  So the old system orders are in the "old" table and the new and ongoing orders are in the "new" table.  The production order number is in the same format, but the old numbers are numbered around 125000 and the new ones start at 2000.
Is this just a limitation of version 7.0?

~bruno71
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LVL 18

Accepted Solution

by:
UnifiedIS earned 2000 total points
ID: 22797486
I think you're going to have to change this to an outer join:
INNER JOIN "DATA"."dbo"."IMITMIDX_SQL" IMITMIDX_SQL ON
        sfordfil_sql."item_no" = IMITMIDX_SQL."item_no"}

LEFT OUTER JOIN "DATA"."dbo"."IMITMIDX_SQL" IMITMIDX_SQL ON
        sfordfil_sql."item_no" = IMITMIDX_SQL."item_no"}
0
 

Author Comment

by:bruno71
ID: 22797659
Awesome!  That worked!  I didn't realize that that table join would make a difference.  Thanks for your help.

~bruno71
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LVL 18

Expert Comment

by:UnifiedIS
ID: 22797906
Your welcome, glad it is working for you.

When you inner join a table that has been outer joined, you basically override the outer join and they both act as inners.
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