[jira] [Created] (KYLIN-4860) 使用多union all查询时抛出数组越界异常

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

Yang created KYLIN-4860:
---------------------------

             Summary: 使用多union all查询时抛出数组越界异常
                 Key: KYLIN-4860
                 URL: https://issues.apache.org/jira/browse/KYLIN-4860
             Project: Kylin
          Issue Type: Bug
            Reporter: Yang


使用如下多union all语句查询（goupy by的字段个数大于union all的子表个数）：
{code:java}
select date,f1,f2,sum(c1) c1,sum(c2) c2
from
(select date,f1,f2,count(*) c1,0 c2
from t1
where date='2021-01-01'
group by date,f1,f2
union all
select date,f1,f2,0 c1,count(*) c2
from t2
where date='2021-01-01'
group by date,f1,f2) a
group by date,f1,f2;
{code}
报错如下：
{code:java}
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 2
        at java.util.ArrayList.rangeCheck(ArrayList.java:657)
        at java.util.ArrayList.get(ArrayList.java:433)
        at org.apache.kylin.query.relnode.ColumnRowType.getTupleExpressionByIndex(ColumnRowType.java:88)
        at org.apache.kylin.query.relnode.OLAPAggregateRel.buildGroups(OLAPAggregateRel.java:272)
        at org.apache.kylin.query.relnode.OLAPAggregateRel.buildColumnRowType(OLAPAggregateRel.java:216)
        at org.apache.kylin.query.relnode.OLAPAggregateRel.implementOLAP(OLAPAggregateRel.java:190)
        at org.apache.kylin.query.relnode.OLAPRel$OLAPImplementor.visitChild(OLAPRel.java:84)
        at org.apache.kylin.query.relnode.OLAPLimitRel.implementOLAP(OLAPLimitRel.java:77)
        at org.apache.kylin.query.relnode.OLAPRel$OLAPImplementor.visitChild(OLAPRel.java:84)
        at org.apache.kylin.query.relnode.OLAPToEnumerableConverter.implement(OLAPToEnumerableConverter.java:77)
        at org.apache.calcite.adapter.enumerable.EnumerableRelImplementor.implementRoot(EnumerableRelImplementor.java:103)
        at org.apache.calcite.adapter.enumerable.EnumerableInterpretable.toBindable(EnumerableInterpretable.java:92)
        at org.apache.calcite.prepare.CalcitePrepareImpl$CalcitePreparingStmt.implement(CalcitePrepareImpl.java:1278)
        at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:331)
        at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:230)
        at org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:796)
        at org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:655)
        at org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:618)
        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:675)
        at org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
        ... 85 more

{code}



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