xiedeyantu commented on code in PR #4244:
URL: https://github.com/apache/calcite/pull/4244#discussion_r2026325488
##########
core/src/test/java/org/apache/calcite/test/RelOptRulesTest.java:
##########
@@ -10059,4 +10059,52 @@ private void
checkLoptOptimizeJoinRule(LoptOptimizeJoinRule rule) {
sql(sql).withRule(CoreRules.INTERSECT_TO_EXISTS)
.checkUnchanged();
}
+
+ /** Test case of
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-6891";>[CALCITE-6891]
+ * Implement IntersectReorderRule</a>. */
+ @Test void testIntersectReorderRule() {
+ final String sql = "select deptno from emp\n"
+ + "intersect\n"
+ + "select deptno from emp where deptno > 5\n";
+ sql(sql).withVolcanoPlanner(true, p -> {
+ p.addRule(CoreRules.INTERSECT_REORDER);
+ p.addRule(EnumerableRules.ENUMERABLE_TABLE_SCAN_RULE);
+ p.addRule(EnumerableRules.ENUMERABLE_INTERSECT_RULE);
+ p.addRule(EnumerableRules.ENUMERABLE_FILTER_RULE);
+ p.addRule(EnumerableRules.ENUMERABLE_PROJECT_RULE);
+ }).check();
+ }
+
+ /** Test case of
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-6891";>[CALCITE-6891]
+ * Implement IntersectReorderRule</a>. */
+ @Test void testIntersectReorderRuleSameRowCount() {
+ final String sql = "select deptno from emp where deptno > 10\n"
+ + "intersect\n"
+ + "select deptno from emp where deptno > 5\n";
+ sql(sql).withVolcanoPlanner(true, p -> {
+ p.addRule(CoreRules.INTERSECT_REORDER);
+ p.addRule(EnumerableRules.ENUMERABLE_TABLE_SCAN_RULE);
+ p.addRule(EnumerableRules.ENUMERABLE_INTERSECT_RULE);
+ p.addRule(EnumerableRules.ENUMERABLE_FILTER_RULE);
+ p.addRule(EnumerableRules.ENUMERABLE_PROJECT_RULE);
+ }).check();
+ }
+
+ /** Test case of
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-6891";>[CALCITE-6891]
+ * Implement IntersectReorderRule</a>. */
+ @Test void testIntersectReorderRuleAll() {
+ final String sql = "select deptno from emp\n"
+ + "intersect all\n"
+ + "select deptno from emp where deptno > 5\n";
+ sql(sql).withVolcanoPlanner(true, p -> {
+ p.addRule(CoreRules.INTERSECT_REORDER);
+ p.addRule(EnumerableRules.ENUMERABLE_TABLE_SCAN_RULE);
Review Comment:
This is to demonstrate the effectiveness of cost optimization in execution,
as the converted plan was indeed chosen in CBO. Do I need to adjust it to a
logical plan?
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