Github user vkorukanti commented on a diff in the pull request:
https://github.com/apache/drill/pull/462#discussion_r58742546
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/common/DrillRelOptUtil.java
---
@@ -169,4 +176,223 @@ private static boolean containIdentity(List<? extends
RexNode> exps,
}
return true;
}
+
+ /**
+ * Copied from {@link RelOptUtil#splitJoinCondition(RelNode, RelNode,
RexNode, List, List)}. Modified to rewrite
--- End diff --
I will followup with a JIRA on Calcite project to see if we can push this
change to Calcite.
The function ```RelOptUtil#splitJoinCondition``` in the current form itself
seems to have a problem/limitation. Currently it just returns the left and
right join key indices, but doesn't return whether the condition is ```EQUAL```
or ```IS NOT DISTINCT FROM``` (it adds the key pair if they have either of
these function in comparison).
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
