asolimando commented on code in PR #4322:
URL: https://github.com/apache/calcite/pull/4322#discussion_r2057678706
##########
core/src/test/java/org/apache/calcite/test/RelOptRulesTest.java:
##########
@@ -10407,4 +10407,30 @@ private void
checkLoptOptimizeJoinRule(LoptOptimizeJoinRule rule) {
.withRule(CoreRules.JOIN_CONDITION_PUSH)
.check();
}
+
+ /** Test case of
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-6973";>[CALCITE-6973]
+ * Add rule for convert Minus to Filter</a>. */
+ @Test void testMinusToFilterRule() {
+ final String sql = "SELECT mgr, comm FROM emp WHERE mgr = 12\n"
+ + "EXCEPT\n"
+ + "SELECT mgr, comm FROM emp WHERE comm = 5\n";
+ sql(sql)
+ .withPreRule(CoreRules.PROJECT_FILTER_TRANSPOSE)
+ .withRule(CoreRules.MINUS_TO_FILTER)
+ .check();
+ }
+
Review Comment:
Can we add a test case involving `FILTER_MERGE` rule too just to check that
we can cover equivalent transformations as the previous version?
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