vlsi commented on a change in pull request #1756: [CALCITE-1824] GROUP_ID
returns wrong result
URL: https://github.com/apache/calcite/pull/1756#discussion_r366263800
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File path:
core/src/main/java/org/apache/calcite/sql/validate/AggregatingSelectScope.java
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@@ -108,19 +108,20 @@ private Resolved resolve() {
groupExprProjection = groupAnalyzer.groupExprProjection;
}
- final Set<ImmutableBitSet> flatGroupSets =
- Sets.newTreeSet(ImmutableBitSet.COMPARATOR);
+ final TreeMap<ImmutableBitSet, Integer> flatGroupSetCount =
Review comment:
Isn't a regular `Map` sufficient here by the way?
It does look weird that a `SortedMap` is passed to `Map` constructor, so the
order of the entries is lost.
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