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Posted to dev@calcite.apache.org by "James Starr (Jira)" <ji...@apache.org> on 2020/10/15 20:50:00 UTC

[jira] [Created] (CALCITE-4340) Correlated Queries in ON clause do not work when referring to left side

James Starr created CALCITE-4340:
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             Summary: Correlated Queries in ON clause do not work when referring to left side
                 Key: CALCITE-4340
                 URL: https://issues.apache.org/jira/browse/CALCITE-4340
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: James Starr


Changes from CALCITE-4210 does not robustly support correlated queries in ON clauses.  

For the short term I am going revert the logic for supporting ON clause and throw an exception when correlated queries occur in ON clause.

Then I will follow up with a fix that will support single subqueries in on clauses.  This will require fixing the offset in Blackboard.register, correctly detect if correlated variable is on the being used and adding a rule RelDecorrelator joined decorrelations.



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