rubenada commented on code in PR #5202:
URL: https://github.com/apache/calcite/pull/5202#discussion_r3845326693
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core/src/test/java/org/apache/calcite/test/enumerable/EnumerableSortedAggregateTest.java:
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@@ -50,6 +50,27 @@ public class EnumerableSortedAggregateTest {
"deptno=20; max_salary=8000.0; num_employee=1");
}
+ @Test void aggOnEmptyInput() {
+ tester(false, new HrSchema())
+ .query("select max(deptno) as m, count(*) as c "
+ + "from emps where deptno > 100")
+ .explainContains(
+ "EnumerableAggregate(group=[{}], m=[MAX($1)], c=[COUNT()])\n"
+ + " EnumerableCalc")
+ .returnsOrdered("m=null; c=0");
+ }
+
+ @Test void sortedAggRuleRejectsEmptyGroupSet() {
Review Comment:
@1fanwang I meant to add the javadoc on `sortedAggRuleRejectsEmptyGroupSet`,
not `aggOnEmptyInput`, sorry if I was not clear. Could you please update it?
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