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https://issues.apache.org/jira/browse/CALCITE-2437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16726940#comment-16726940
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Laurent Goujon commented on CALCITE-2437:
-----------------------------------------
I guessed I just jinxed myself? I actually triggered it somehow. Will submit a
patch shortly
> FilterMultiJoinMergeRule doesn't combine postFilterCondition
> ------------------------------------------------------------
>
> Key: CALCITE-2437
> URL: https://issues.apache.org/jira/browse/CALCITE-2437
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Laurent Goujon
> Assignee: Julian Hyde
> Priority: Major
>
> {{FilterMultiJoinMergeRule}} merges a {{Filter}} on top of a {{MultiJoin}}
> into the multi join itself as part of its post-join filter condition. But the
> rule doesn't seem to combine the top filter with the existing condition.
> I actually believe it's a bug in the code, although I never triggered it
> myself.
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