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https://issues.apache.org/jira/browse/CALCITE-3618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Danny Chen updated CALCITE-3618:
--------------------------------
Fix Version/s: 1.22.0
> WindowedAggRelSplitter.isDependent is incorrect
> -----------------------------------------------
>
> Key: CALCITE-3618
> URL: https://issues.apache.org/jira/browse/CALCITE-3618
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.21.0
> Reporter: Li Xian
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.22.0
>
> Attachments: Screen Shot 2019-12-20 at 3.49.09 PM.png
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> WindowedAggRelSplitter isDependent is incorrect
> {code:java}
> while (!dfs.isEmpty()) {
> int source = dfs.pop();
> if (visited.contains(source)) {
> continue;
> }
> if (source == ordinal1) {
> return true;
> }
> visited.add(source);
> for (DefaultEdge e : graph.getOutwardEdges(source)) {
> int target = (int) e.target;
> if (rank.get(target) < rank.get(ordinal1)) {
> dfs.push(target);
> }
> }
> }
> {code}
> It only pushes target into dfs queue if target rank is smaller than
> ordinal1's rank, which makes it impossible to find the dependency.
> For SQL like
> {code:sql}
> select
> lag(a2, 1, 0) over (partition by "deptno" order by a1) as lagx
> from
> (
> select
> "deptno",
> "salary" / "commission" as a1,
> sum("commission") over ( partition by "deptno" order by "salary" /
> "commission") / sum("commission") over (partition by "deptno") as a2
> from
> "hr"."emps"
> )
> {code}
> It generates levels of exprs like the attached picture below which is
> incorrect.
> To reproduce the error, you can execute the below SQL in the CsvTest
> {code:sql}
> "SELECT
> LAG(A2, 1, 0) OVER (PARTITION BY "GENDER" ORDER BY A1) AS LAGX
> FROM
> (
> SELECT
> "GENDER",
> "EMPNO" / "DEPTNO" AS A1,
> SUM("DEPTNO") OVER ( PARTITION BY "GENDER" ORDER BY "EMPNO" /
> "DEPTNO") / SUM("DEPTNO") OVER (PARTITION BY "GENDER") AS A2
> FROM
> "EMPS"
> ) {code}
> And Calcite will throw the below error
> {code:sql}
> Error while applying rule ProjectToWindowRule:project, args
> [rel#12:LogicalProject.NONE.[](input=RelSubset#11,LAGX=LAG(/(CASE(>(COUNT($2)
> OVER (PARTITION BY $3 ORDER BY /($0, $2) RANGE BETWEEN UNBOUNDED PRECEDING
> AND CURRENT ROW), 0), $SUM0($2) OVER (PARTITION BY $3 ORDER BY /($0, $2)
> RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW), null:INTEGER),
> CASE(>(COUNT($2) OVER (PARTITION BY $3 RANGE BETWEEN UNBOUNDED PRECEDING AND
> UNBOUNDED FOLLOWING), 0), $SUM0($2) OVER (PARTITION BY $3 RANGE BETWEEN
> UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING), null:INTEGER)), 1, 0) OVER
> (PARTITION BY $3 ORDER BY /($0, $2) RANGE BETWEEN UNBOUNDED PRECEDING AND
> CURRENT ROW))]
> at org.apache.calcite.avatica.Helper.createException(Helper.java:56)
> at org.apache.calcite.avatica.Helper.createException(Helper.java:41)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:163)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:227)
> at org.apache.calcite.test.CsvTest.checkSql(CsvTest.java:408)
> at org.apache.calcite.test.CsvTest.access$300(CsvTest.java:71)
> at org.apache.calcite.test.CsvTest$Fluent.ok(CsvTest.java:1066)
> at org.apache.calcite.test.CsvTest.testSelect(CsvTest.java:192)
> Caused by:
> java.lang.RuntimeException: Error while applying rule
> ProjectToWindowRule:project, args
> [rel#12:LogicalProject.NONE.[](input=RelSubset#11,LAGX=LAG(/(CASE(>(COUNT($2)
> OVER (PARTITION BY $3 ORDER BY /($0, $2) RANGE BETWEEN UNBOUNDED PRECEDING
> AND CURRENT ROW), 0), $SUM0($2) OVER (PARTITION BY $3 ORDER BY /($0, $2)
> RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW), null:INTEGER),
> CASE(>(COUNT($2) OVER (PARTITION BY $3 RANGE BETWEEN UNBOUNDED PRECEDING AND
> UNBOUNDED FOLLOWING), 0), $SUM0($2) OVER (PARTITION BY $3 RANGE BETWEEN
> UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING), null:INTEGER)), 1, 0) OVER
> (PARTITION BY $3 ORDER BY /($0, $2) RANGE BETWEEN UNBOUNDED PRECEDING AND
> CURRENT ROW))]
> at
> org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:238)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:632)
> at
> org.apache.calcite.tools.Programs.lambda$standard$3(Programs.java:287)
> at
> org.apache.calcite.tools.Programs$SequenceProgram.run(Programs.java:347)
> at org.apache.calcite.prepare.Prepare.optimize(Prepare.java:189)
> at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:320)
> at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:231)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:638)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:502)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:472)
> at
> org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:231)
> at
> org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:550)
> at
> org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:675)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
> ... 5 more
> Caused by:
> java.lang.IllegalArgumentException
> at
> org.apache.calcite.rex.RexSlot$SelfPopulatingList.get(RexSlot.java:90)
> at
> org.apache.calcite.rex.RexSlot$SelfPopulatingList.get(RexSlot.java:60)
> at
> org.apache.calcite.rex.RexLocalRef.createName(RexLocalRef.java:83)
> at
> org.apache.calcite.rex.RexLocalRef.<init>(RexLocalRef.java:52)
> at
> org.apache.calcite.rel.rules.CalcRelSplitter$InputToCommonExprConverter.visitLocalRef(CalcRelSplitter.java:921)
> at
> org.apache.calcite.rel.rules.CalcRelSplitter$InputToCommonExprConverter.visitLocalRef(CalcRelSplitter.java:872)
> at
> org.apache.calcite.rex.RexLocalRef.accept(RexLocalRef.java:75)
> at
> org.apache.calcite.rex.RexShuttle.visitList(RexShuttle.java:149)
> at
> org.apache.calcite.rex.RexShuttle.visitCall(RexShuttle.java:101)
> at
> org.apache.calcite.rex.RexShuttle.visitCall(RexShuttle.java:34)
> at org.apache.calcite.rex.RexCall.accept(RexCall.java:191)
> at
> org.apache.calcite.rel.rules.CalcRelSplitter.createProgramForLevel(CalcRelSplitter.java:561)
> at
> org.apache.calcite.rel.rules.CalcRelSplitter.execute(CalcRelSplitter.java:218)
> at
> org.apache.calcite.rel.rules.ProjectToWindowRule$ProjectToLogicalProjectAndWindowRule.onMatch(ProjectToWindowRule.java:187)
> at
> org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:211)
> ... 18 more
> {code}
>
> I have submitted a PR to fix this
> [https://github.com/apache/calcite/pull/1678]
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