julianhyde commented on a change in pull request #1335: [CALCITE-3159] Distinct
can be removed for MIN/MAX/BIT_OR/BIT_AND agg…
URL: https://github.com/apache/calcite/pull/1335#discussion_r308358616
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File path: core/src/main/java/org/apache/calcite/rel/core/AggregateCall.java
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@@ -98,7 +99,7 @@ private AggregateCall(SqlAggFunction aggFunction, boolean
distinct,
this.argList = ImmutableList.copyOf(argList);
this.filterArg = filterArg;
this.collation = Objects.requireNonNull(collation);
- this.distinct = distinct;
+ this.distinct = aggFunction.getDistinctOptionality() !=
Optionality.IGNORED && distinct;
Review comment:
Worth adding a comment to explain what is going on here.
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