[teiid-issues] [JBoss JIRA] (TEIID-5333) Complex foreign keys set the referenced key regardless of order

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-5333?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on TEIID-5333 started by Steven Hawkins.
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> Complex foreign keys set the referenced key regardless of order
> ---------------------------------------------------------------
>
>                 Key: TEIID-5333
>                 URL: https://issues.jboss.org/browse/TEIID-5333
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>
> The metadatavalidator will resolve foreign keys as long as the columns match - but does not reorder the fk columns nor track the referenced order which means that the referenced key can be wrong.  For example:
> {code}
> CREATE FOREIGN TABLE G1(g1e1 integer, g1e2 integer, PRIMARY KEY(g1e1, g1e2));
> CREATE FOREIGN TABLE G2(g2e1 integer, g2e2 integer, FOREIGN KEY (g2e1, g2e2) REFERENCES G1(g1e2, g1e1));
> {code}
> Note that the elements are reversed in the references list, but this is not captured in the resolved foreign key meaning that it effectively represents a relationship on g2e1,g2e2 with g1e1,g1e2.



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