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Posted to dev@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2016/12/02 02:05:59 UTC

[jira] [Created] (CALCITE-1524) Add a project to the planner root so that rules know which output fields are used

Julian Hyde created CALCITE-1524:
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             Summary: Add a project to the planner root so that rules know which output fields are used
                 Key: CALCITE-1524
                 URL: https://issues.apache.org/jira/browse/CALCITE-1524
             Project: Calcite
          Issue Type: Bug
            Reporter: Julian Hyde
            Assignee: Julian Hyde


Add a project to the planner root so that rules know which output fields are used.

One such rule is {{SemiJoinRule}}; it can only apply if it knows that no fields are used from the right-hand input, so it has to match a {{Project}} at the root of its pattern.



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