[teiid-issues] [JBoss JIRA] Closed: (TEIID-755) Oracle Connector is not honouring metadata when rewriting ORDER BY clause

[Steve Hawkins (JIRA)]

     [ https://jira.jboss.org/browse/TEIID-755?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Hawkins closed TEIID-755.
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> Oracle Connector is not honouring metadata when rewriting ORDER BY clause
> -------------------------------------------------------------------------
>
>                 Key: TEIID-755
>                 URL: https://jira.jboss.org/browse/TEIID-755
>             Project: Teiid
>          Issue Type: Bug
>          Components: JDBC Connector
>    Affects Versions: 6.0.0, 6.1.0, 6.2.0
>            Reporter: Larry O'Leary
>            Assignee: Steven Hawkins
>            Priority: Minor
>             Fix For: 6.2.0
>
>   Original Estimate: 1 hour
>  Remaining Estimate: 1 hour
>
> When executing a query that contains an ORDER BY clause, the Oracle Connector is rewriting the query using the column name given by the MM query rather than the source name as specified in the source model.  What this means is that column name case is not being enforced.  
> For example:
> MM User Command:
> SELECT INTKEY FROM BQT1.SMALLA UNION SELECT INTKEY FROM BQT1.SMALLB ORDER BY INTKEY
> Model represents INTKEY as IntKey for source name.  Currently we rewrite as:
> SELECT SmallA.IntKey FROM SmallA UNION SELECT SmallB.IntKey FROM SmallB ORDER BY INTKEY
> This should actually be:
> SELECT SmallA.IntKey FROM SmallA UNION SELECT SmallB.IntKey FROM SmallB ORDER BY IntKey
> Although this does not trigger a failure with the current implementation, if the column names were qualified is SQL identifiers, the query would fail as Oracle is expecting a column name of "IntKey" and would not know what "INTKEY" was.

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