rubenada commented on a change in pull request #2211:
URL: https://github.com/apache/calcite/pull/2211#discussion_r519817443
##########
File path: core/src/test/java/org/apache/calcite/test/RelOptRulesTest.java
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@@ -6827,6 +6828,62 @@ protected MyProjectRule(Config config) {
.check();
}
+ /**
+ * Test case for
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-4317";>[CALCITE-4317]
+ * RelFieldTrimmer after trimming all the fields in an aggregate
+ * should not return a zero field Aggregate</a>. */
+ @Test void testProjectJoinTransposeRuleOnAggWithNoFieldsWithTrimmer() {
Review comment:
Ok, thanks for the explanation. IMO there is no need to duplicate the
test, we can leave it just here.
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