gortiz commented on code in PR #14211:
URL: https://github.com/apache/pinot/pull/14211#discussion_r1796977724
##########
pinot-query-runtime/src/main/java/org/apache/pinot/query/runtime/operator/MultistageGroupByExecutor.java:
##########
@@ -241,6 +241,11 @@ private void processAggregate(TransferableBlock block) {
aggFunction.aggregateGroupBySV(numMatchedRows, filteredIntKeys,
groupByResultHolder, blockValSetMap);
}
}
+ if (intKeys == null) {
+ // _groupIdGenerator should still have all the groups even if there
are only filtered aggregates for SQL
+ // compliant results.
+ generateGroupByKeys(block);
+ }
Review Comment:
Wouldn't be semantically the same to always initialize `intKeys` to
`generateGroupByKeys(block);` in line 209?
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