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Posted to dev@calcite.apache.org by "Laljo John Pullokkaran (JIRA)" <ji...@apache.org> on 2014/07/02 23:43:24 UTC

[jira] [Created] (OPTIQ-328) Introduce semiJoin like Flag in JoinRelBase

Laljo John Pullokkaran created OPTIQ-328:
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             Summary: Introduce semiJoin like Flag in JoinRelBase
                 Key: OPTIQ-328
                 URL: https://issues.apache.org/jira/browse/OPTIQ-328
             Project: Optiq
          Issue Type: Bug
            Reporter: Laljo John Pullokkaran
            Assignee: Julian Hyde


Introduce a flag to indicate that duplicates are eliminated from RHS of the join (semiJoin). This would help to improve cardinality, cost estimation.



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