xy2953396112 commented on a change in pull request #2277:
URL: https://github.com/apache/calcite/pull/2277#discussion_r528458416
##########
File path: core/src/main/java/org/apache/calcite/plan/SubstitutionVisitor.java
##########
@@ -192,8 +193,18 @@ public SubstitutionVisitor(RelNode target_, RelNode query_,
this.simplify =
new RexSimplify(cluster.getRexBuilder(), predicates, executor);
this.rules = rules;
- this.query = Holder.of(MutableRels.toMutable(query_));
+ MutableRel mutableQuery = MutableRels.toMutable(query_);
this.target = MutableRels.toMutable(target_);
+ if (mutableQuery instanceof MutableCalc) {
+ this.query = Holder.of(mutableQuery);
+ } else {
Review comment:
Here, we always try to compensate Calc in the original RelNode. Why
can't we do it through custom normalization, or there will be more patterns in
the future materialized view recognition. There should be a unified way to
implement it.
How do you think?
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
