LakshSingla commented on a change in pull request #12065:
URL: https://github.com/apache/druid/pull/12065#discussion_r780051096
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File path: sql/src/test/java/org/apache/druid/sql/calcite/CalciteQueryTest.java
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@@ -13342,4 +13340,34 @@ public void
testCommonVirtualExpressionWithDifferentValueType() throws Exception
ImmutableList.of()
);
}
+
+ // When optimization in Grouping#applyProject is applied, and it reduces a
Group By query to a timeseries, we
+ // want it to return empty bucket if no row matches
+ @Test
+ public void testReturnEmptyRowWhenGroupByIsConvertedToTimeseries() throws
Exception
Review comment:
Added a few more test cases, which show the consequences of optimization
in different cases.
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