clintropolis commented on a change in pull request #11208:
URL: https://github.com/apache/druid/pull/11208#discussion_r627869215
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File path:
sql/src/main/java/org/apache/druid/sql/calcite/aggregation/builtin/CountSqlAggregator.java
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@@ -134,15 +134,17 @@ public Aggregation toDruidAggregation(
} else {
// Not COUNT(*), not distinct
// COUNT(x) should count all non-null values of x.
- return Aggregation.create(createCountAggregatorFactory(
+ AggregatorFactory theCount = createCountAggregatorFactory(
Review comment:
Instead I have just removed the `VirtualColumn` tracking from
`Aggregation` entirely in favor of replacing it with a new `getRequiredColumns
` that can list all columns between agg factories and the post agg, and using
the new find method on the `VirtualColumnRegistry` to look them up.
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