[jira] [Created] (CALCITE-1200) Handle null equality join condition as IS NOT DISTINCT FROM in RelOptUtil.splitJoinCondition

["Venki Korukanti (JIRA)" <ji...@apache.org>]

Venki Korukanti created CALCITE-1200:
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             Summary: Handle null equality join condition as IS NOT DISTINCT FROM in RelOptUtil.splitJoinCondition
                 Key: CALCITE-1200
                 URL: https://issues.apache.org/jira/browse/CALCITE-1200
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: Venki Korukanti
            Assignee: Julian Hyde
             Fix For: 1.8.0


Currently {{RelOptUtil.splitJoinCondition}} can't recognize a join condition as equi-join condition if it is given as {{(t1.key = t2.key OR (t1.key IS NULL AND t2.key IS NULL))}} which is basically an expanded version of {{IS NOT DISTINCT FROM}} function.

This JIRA is to track changes to {{RelOptUtil.splitJoinCondition}} to handle null equality join condition by converting them to {{IS NOT DISTINCT FROM}} function.



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