[jira] [Resolved] (CALCITE-3918) SubQueryFilterRemoveRule failed to decorrelate subquery for TPCH q17

["Haisheng Yuan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-3918?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Haisheng Yuan resolved CALCITE-3918.
------------------------------------
    Resolution: Not A Problem

> SubQueryFilterRemoveRule failed to decorrelate subquery for TPCH q17
> --------------------------------------------------------------------
>
>                 Key: CALCITE-3918
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3918
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>            Reporter: Haisheng Yuan
>            Priority: Major
>
> Disable RelDecorrelator and run TpchTest.testQuery17(),  SubQueryFilterRemoveRule generates plan with Correlate, which is not expected.
> {code:java}
> EnumerableProject(AVG_YEARLY=[/($0, 7.0:DECIMAL(2, 1))])
>   EnumerableAggregate(group=[{}], agg#0=[SUM($2)])
>     EnumerableFilter(condition=[AND(=($3, $0), =(CAST($4):VARCHAR, 'Brand#13'), =(CAST($5):VARCHAR, 'JUMBO CAN'), <($1, $6))])
>       EnumerableCorrelate(correlation=[$cor0], joinType=[left], requiredColumns=[{3}])
>         EnumerableNestedLoopJoin(condition=[true], joinType=[inner])
>           EnumerableProject(L_PARTKEY=[$1], L_QUANTITY=[$4], L_EXTENDEDPRICE=[$5])
>             EnumerableTableScan(table=[[TPCH_01, LINEITEM]])
>           EnumerableProject(P_PARTKEY=[$0], P_BRAND=[$3], P_CONTAINER=[$6])
>             EnumerableTableScan(table=[[TPCH_01, PART]])
>         EnumerableProject($f0=[*(0.2:DECIMAL(2, 1), CAST(/(CASE(=($1, 0), null:JavaType(class java.lang.Long), $0), $1)):JavaType(class java.lang.Long))])
>           EnumerableAggregate(group=[{}], agg#0=[$SUM0($4)], agg#1=[COUNT($4)])
>             EnumerableFilter(condition=[=($1, $cor0.P_PARTKEY)])
>               EnumerableTableScan(table=[[TPCH_01, LINEITEM]])
> {code}



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