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Home -> Community -> Usenet -> comp.databases.theory -> Re: Conflicts in Relationships
I mean changing a left outer join into a right outer join... or I mean, in the course of creating a query, the user adds a join of a type that conflicts with the joins that are already configured.
E.g. Assuming a query exists like this....
SELECT TableA.*
FROM TableB INNER JOIN
TableA ON TableB.id1 = TableA.id1 INNER JOIN
TableC ON TableB.id3 = TableC.id3 AND TableA.id3 =
TableC.id3
..which is just 3 tables inner joined in a triangle. If the user then tries to change the relationship between A and B to make sure all records of A appear in the result, then the query builder software needs to somehow report a conflict in the relationships because the relationship between A and C must change as well.
I hope I explained that properly...
-- Posted via http://dbforums.comReceived on Wed Sep 17 2003 - 21:49:42 CDT
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