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Posted to dev@calcite.apache.org by "LeoWangLZ (JIRA)" <ji...@apache.org> on 2017/12/31 00:36:00 UTC

[jira] [Created] (CALCITE-2116) The digests are not same for the common sub-expressions in HepPlanner

LeoWangLZ created CALCITE-2116:
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             Summary: The digests are not same for the common sub-expressions in HepPlanner
                 Key: CALCITE-2116
                 URL: https://issues.apache.org/jira/browse/CALCITE-2116
             Project: Calcite
          Issue Type: Bug
    Affects Versions: 1.15.0
            Reporter: LeoWangLZ
            Assignee: Julian Hyde


The digests are not same for the same sub-query.
like query
{code:java}
select * from (select * from dept union all select * from dept)a;
{code}
When run the query, The union relNode has two inputs, and it's same expectly and it's the same object instead of the print of plan, but Now they are not same.
And for Test testReplaceCommonSubexpression, the rule is only firing once, but now it's two.



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