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https://issues.apache.org/jira/browse/CALCITE-2039?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Enrico Olivelli updated CALCITE-2039:
-------------------------------------
Attachment: PlannerExampleTest.java
run using latest master
> AssertionError at Mappings.create(Mappings.java:64) with "select 0 as c1,..."
> and TableProjectableFilterable
> ------------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-2039
> URL: https://issues.apache.org/jira/browse/CALCITE-2039
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.14.0
> Reporter: Alexey Roytman
> Assignee: Michael Mior
> Attachments: CALCITE-2039.zip, PlannerExampleTest.java,
> calcite_2039_eclipse_project.zip
>
>
> When I use a ProjectableFilterableTable interface, the following query
> (notice the "select 0 as c1, ...")
> {code}
> select 0 as c1, D101.c1 as c3, D101.c2 as c4, D101.c3 as c5 from (
> select T1000001.Category as c1, T1000001.Revenue as c2,
> T1000001."YEAR" as c3 from (
> select "YEAR", Category, "MONTH", Territory, Quarter, Sub_Category,
> Age_Group, Gender, Country, Revenue, Num_Of_Orders, "DATE" from
> XSchema.HDP) T1000001) D101
> {code}
> causes an exception:
> {noformat}
> java.lang.AssertionError
> at org.apache.calcite.util.mapping.Mappings.create(Mappings.java:64)
> at org.apache.calcite.rel.core.Project.getMapping(Project.java:277)
> at org.apache.calcite.rel.core.Project.getMapping(Project.java:257)
> at
> org.apache.calcite.rel.rules.ProjectTableScanRule.apply(ProjectTableScanRule.java:100)
> at
> org.apache.calcite.rel.rules.ProjectTableScanRule$3.onMatch(ProjectTableScanRule.java:83)
> at
> org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:212)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:650)
> at org.apache.calcite.tools.Programs$5.run(Programs.java:326)
> at
> org.apache.calcite.tools.Programs$SequenceProgram.run(Programs.java:387)
> at org.apache.calcite.prepare.Prepare.optimize(Prepare.java:188)
> at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:321)
> at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:230)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:786)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:640)
> at
> org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:610)
> at
> org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:221)
> at
> org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:603)
> at
> org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:638)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:149)
> at
> org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:218)
> ...
> {noformat}
> In the Mappings.create(), mappingType is INVERSE_SURJECTION, and "assert
> sourceCount >= targetCount" throws the exception, because sourceCount is 3,
> and targetCount is 4.
> At the frame above, in Project.getMapping(), "projects" are: {{\[0, $1, $2,
> $0\]}} (1st is RexLiteral, others are RexInputRef). At the frame above, in
> EnumerableProject.getMapping(), getInput().getRowType() has only 3 fields in
> the table.
> I have a reproduction case (in Java) but it's not within a Calcite standard.
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