danny0405 commented on a change in pull request #1460: [CALCITE-3352]
ProjectToWindowRule sets wrong collation on generated Window
URL: https://github.com/apache/calcite/pull/1460#discussion_r326442320
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File path: core/src/test/java/org/apache/calcite/test/RelOptRulesTest.java
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@@ -6122,6 +6122,54 @@ private Sql checkSubQuery(String sql) {
checkPlanning(FilterJoinRule.FILTER_ON_JOIN, query);
}
+ @Test public void testWindowOnSortedInput() {
+ // Create a customized test with RelCollation trait in the test cluster.
+ Tester tester = new TesterImpl(getDiffRepos(), true, true, false, false,
+ true, null, null) {
+ @Override public RelOptPlanner createPlanner() {
+ return new MockRelOptPlanner(Contexts.empty()) {
+ @Override public List<RelTraitDef> getRelTraitDefs() {
+ return ImmutableList.of(RelCollationTraitDef.INSTANCE);
+ }
+ @Override public RelTraitSet emptyTraitSet() {
+ return RelTraitSet.createEmpty().plus(
+ RelCollationTraitDef.INSTANCE.getDefault());
+ }
+ };
+ }
+ };
+
+ final HepProgram preProgram = new HepProgramBuilder()
+ .addRuleInstance(SortProjectTransposeRule.INSTANCE)
+ .build();
+ final HepProgram program = HepProgram.builder()
+ .addRuleInstance(ProjectToWindowRule.PROJECT)
+ .build();
Review comment:
From the tests you gave, i couldn't figure out what you are fixing, because
both the input and output nodes collation are the same.
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