amansinha100 commented on a change in pull request #1347: DRILL-6545:
Projection Push down into Lateral Join operator.
URL: https://github.com/apache/drill/pull/1347#discussion_r199019017
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/physical/LateralJoinPrel.java
##########
@@ -104,6 +118,12 @@ private RelNode rename(RelNode input,
List<RelDataTypeField> inputFields, List<S
return proj;
}
+ @Override
+ public RelWriter explainTerms(RelWriter pw) {
+ return super.explainTerms(pw).item("correlate Column: ",
this.excludeCorrelateColumn ? this.getColumn() : "None");
Review comment:
Will this confuse users in the sense that 'correlate column' is actually
always needed for the semantics of lateral join but what excludeCorrelateColumn
does is it prevents materialization of that column from the left side of the
lateral.
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