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Tupacmoche
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Quote Tupacmoche Replybullet Topic: Full Outer Joins
    Posted: 09 Apr 2007 at 11:53am
Is it true that you cannot use a full outer join when using Oracle 10g in Crystal Reports VI?
 
 
Rob
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hilfy
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Quote hilfy Replybullet Posted: 10 Apr 2007 at 10:34am
Do you mean Crystal XI?  If so, then no, it is not true.  I just tested it with Oracle 10g and Crystal XI and had no problems.
 
-Dell


Edited by hilfy - 10 Apr 2007 at 10:35am
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Tupacmoche
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Quote Tupacmoche Replybullet Posted: 10 Apr 2007 at 11:05am
I got the following msg:
Failed to retrieve data from database
ORA-03113 end of file on communications channel
DB Vendor Code 3113
OCI Call: OCI StmtExecute
Rob
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hilfy
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Quote hilfy Replybullet Posted: 10 Apr 2007 at 11:14am
Do you have a very large data set being returned? Do you have more than one full outer joins? (NOT a good idea!)
 
Have you tested the SQL that Crystal generated to see if it's correct?  Go to the Database menu and select Show SQL Query - you can copy the SQL and paste it into whatever tool you use for querying the database (we use Toad or PL/SQL Developer).  You can then see where Oracle might give you the error.  If you need to 'tweak' the SQL by adding hints, you can always set the SQL in Crystal yourself by using the CommandText instead of linking the individual tables in Crystal.
 
-Dell
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Tupacmoche
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Quote Tupacmoche Replybullet Posted: 10 Apr 2007 at 11:39am

This is the SQL that Crystal generates:

 
SELECT "BUDGET_COMMITMENTS"."ACCOUNT_DESC", "CODE_B"."CODE_B", "BUDGET_COMMITMENTS"."ACCOUNT", "BUDGET_COMMITMENTS"."CODE_B"
 FROM   "TEMP1APP"."CODE_B" "CODE_B" RIGHT OUTER JOIN "TEMP1APP"."BUDGET_COMMITMENTS" "BUDGET_COMMITMENTS" ON "CODE_B"."CODE_B"="BUDGET_COMMITMENTS"."CODE_B"
 
The only change is to make it a "Full Outer Join" not just a "Right Outer Join". When I change "Right" to "Full" I get the same error message. I used Universal ISQL to run it.
Rob
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Quote hilfy Replybullet Posted: 10 Apr 2007 at 12:02pm
So something is happening in Oracle that's causing this.  The SQL looks ok to me....
 
From your SQL, I think what you're trying to do is get all records from both tables, regardless of whether the CODE_B value exists in one or the other.  Correct?  Or is there some other reason you need a full outer join?
 
Not that it should make any difference, but you could try changing the direction of the link in Crystal - from BUDGET_COMMITMENTS to CODE_B instead of the other way around.  If that doesn't help, you may want to look at an explain plan for the SQL and see what you need to do to tune it.  That's not something I can help you with, so if you're not sure how to do that you'll need to find someone in your organization who has experience tuning Oracle queries.
 
-Dell
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Tupacmoche
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Quote Tupacmoche Replybullet Posted: 10 Apr 2007 at 12:17pm
I took your advice and used the command text box to code it manually. But I used a UNION and it worked. See
 
Select TEMP1APP.code_b.CODE_B, TEMP1APP.BUDGET_COMMITMENTS.CODE_B,
  TEMP1APP.BUDGET_COMMITMENTS.ACCOUNT_DESC, TEMP1APP.BUDGET_COMMITMENTS.ACCOUNT
From TEMP1APP.BUDGET_COMMITMENTS Left Outer Join
  TEMP1APP.code_b On Code_b.code_b = budget_commitments.code_b
Union
Select TEMP1APP.code_b.CODE_B, TEMP1APP.BUDGET_COMMITMENTS.CODE_B,
  TEMP1APP.BUDGET_COMMITMENTS.ACCOUNT_DESC, TEMP1APP.BUDGET_COMMITMENTS.ACCOUNT
From TEMP1APP.BUDGET_COMMITMENTS Right Outer Join
  TEMP1APP.code_b On Code_b.code_b = budget_commitments.code_b
Order By 1 Desc, 4
 
I will try tracing it as well.
Rob
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