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Feng Zhu commented on CALCITE-3087: ----------------------------------- Hi, [~hyuan]. The issue is about the mapping in MultableRels.createProject. We can fix it in CALCITE-3060. > AggregateOnProjectToAggregateUnifyRule ignores Project incorrectly when its > Mapping breaks ordering > --------------------------------------------------------------------------------------------------- > > Key: CALCITE-3087 > URL: https://issues.apache.org/jira/browse/CALCITE-3087 > Project: Calcite > Issue Type: Bug > Components: core > Reporter: Haisheng Yuan > Assignee: Feng Zhu > Priority: Major > Labels: pull-request-available > Fix For: 1.20.0 > > Time Spent: 1.5h > Remaining Estimate: 0h > > Add the following test to MaterializationTest: > {code:java} > @Test public void testAggregateGroupSetsRollUp0() { > checkMaterialize( > "select \"empid\", \"deptno\", count(*) as c, sum(\"salary\") as s > from \"emps\" " > + "group by \"empid\", \"deptno\"", > "select count(*) + 1 as c, \"deptno\" from \"emps\" group by > cube(\"deptno\", \"empid\")", > HR_FKUK_MODEL, > CalciteAssert.checkResultContains( > "EnumerableCalc(expr#0..2=[{inputs}], expr#3=[1], " > + "expr#4=[+($t2, $t3)], C=[$t4], deptno=[$t1])\n" > + " EnumerableAggregate(group=[{0, 1}], groups=[[{0, 1}, > {0}, {1}, {}]], agg#0=[$SUM0($2)])\n" > + " EnumerableTableScan(table=[[hr, m0]])")); > } > {code} > We got error: > {code:java} > Caused by: java.lang.IllegalArgumentException: must be sorted: [{0, 1}, {1}, > {0}, {}] > at > org.apache.calcite.rel.core.Aggregate$Group.induce(Aggregate.java:472) > at > org.apache.calcite.rel.mutable.MutableAggregate.getGroupType(MutableAggregate.java:83) > at > org.apache.calcite.plan.SubstitutionVisitor.unifyAggregates(SubstitutionVisitor.java:1281) > at > org.apache.calcite.plan.SubstitutionVisitor$AggregateOnProjectToAggregateUnifyRule.apply(SubstitutionVisitor.java:1345) > at > org.apache.calcite.plan.SubstitutionVisitor.go(SubstitutionVisitor.java:531) > at > org.apache.calcite.plan.SubstitutionVisitor.go(SubstitutionVisitor.java:466) > at > org.apache.calcite.plan.MaterializedViewSubstitutionVisitor.go(MaterializedViewSubstitutionVisitor.java:56) > at > org.apache.calcite.plan.RelOptMaterializations.substitute(RelOptMaterializations.java:200) > at > org.apache.calcite.plan.RelOptMaterializations.useMaterializedViews(RelOptMaterializations.java:72) > at > org.apache.calcite.plan.volcano.VolcanoPlanner.registerMaterializations(VolcanoPlanner.java:348) > at > org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:584) > {code} > The reason is that Mappings.apply2 doesn't sort. -- This message was sent by Atlassian JIRA (v7.6.3#76005)