YiwenWu commented on code in PR #3661:
URL: https://github.com/apache/calcite/pull/3661#discussion_r1474392304
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core/src/main/java/org/apache/calcite/rel/metadata/RelMdRowCount.java:
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@@ -181,6 +182,11 @@ public Double getRowCount(Calc rel, RelMetadataQuery mq) {
return mq.getRowCount(rel.getInput());
}
+ // Ensures that EnumerableBatchNestedLoopJoin has the same rowCount as the
join that originated it
+ public @Nullable Double getRowCount(EnumerableBatchNestedLoopJoin join,
RelMetadataQuery mq) {
Review Comment:
How to ensure that the original join has the same statistics as the
EnumerableBatchNestedLoopJoin？
since the EnumerableBatchNestedLoopJoin has new Filter conditions
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