Nested correlated reference issue with rewritten queries
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Key: TEIID-1374
URL:
https://jira.jboss.org/browse/TEIID-1374
Project: Teiid
Issue Type: Bug
Components: Query Engine
Affects Versions: 7.0
Reporter: Steven Hawkins
Assignee: Steven Hawkins
In a query such as "select * from bqt1.smalla where exists (select intnum from
bqt1.smalla x where smalla.intnum = x.intnum and exists (select intnum from bqt1.smalla
where exists (select intnum from bqt1.smalla x where smalla.intnum = x.intnum)))" we
will inappropriately report that the top exists subquery has 2 correlated references since
we see the more deeply nested smalla.intnum also.
This is generally not a issue, it can introduce errors in places where subqueries are
rewritten, such as with subquery optimization or inherently updatable view queries.
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