Oracle Connector is not honouring metadata when rewriting ORDER BY clause
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Key: TEIID-755
URL:
https://jira.jboss.org/jira/browse/TEIID-755
Project: Teiid
Issue Type: Bug
Components: JDBC Connector
Affects Versions: 6.1.0, 6.0.0, 6.2.0
Reporter: Larry O'Leary
Assignee: Steven Hawkins
Priority: Minor
Fix For: 6.2.0
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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