[
https://issues.apache.org/jira/browse/IGNITE-15605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17716219#comment-17716219
]
Evgeny Stanilovsky commented on IGNITE-15605:
---------------------------------------------
Check the plan :
{noformat}
LogicalSort(sort0=[$0], dir0=[ASC])
LogicalCorrelate(correlation=[$cor0], joinType=[left], requiredColumns=[{0}])
LogicalAggregate(group=[{0}], EXPR$1=[SUM($0)])
LogicalTableScan(table=[[BLANK, INTEGERS]])
LogicalAggregate(group=[{}], agg#0=[SINGLE_VALUE($0)])
LogicalProject(EXPR$0=[+($0, $1)])
LogicalAggregate(group=[{}], agg#0=[SUM($0)], agg#1=[SUM($1)])
LogicalProject(I=[$0], $f1=[$cor0.I])
LogicalTableScan(table=[[BLANK, INTEGERS]]){noformat}
Correlate here is INTEGER and further scalar for aggregates representation
looks like:
{noformat}
public void execute(org.apache.ignite.internal.sql.engine.exec.ExecutionContext
ctx, Object in1, Object out) {
final org.apache.ignite.internal.sql.engine.exec.RowHandler hnd =
ctx.rowHandler();
final Object corr = ctx.correlatedVariable(0);
final Integer input_value = (Integer) hnd.get(0, in1);
final Integer corInp_value = (Integer) hnd.get(1, corr);
hnd.set(0, out, input_value);
hnd.set(1, out, corInp_value);
}{noformat}
but derived type for SUM is: IgniteTypeSystem#deriveSumType -> BIGINT (long),
thus we obtain observed cast exception, changing return type to
SqlTypeName.INTEGER will bring correct results and passed test. In native
calcite code, this : RelDataTypeSystemImpl#deriveSumType for INTEGER derives
INTEGER and no additional cast is necessary, thus no cast exception will
raised. Note, for obtaining plan with correlates in calcite it`s necessary to
disable tools.Programs#standard -> DecorrelateProgram usage.
> Calcite. Unexpected result with aggregate inside subquery.
> ----------------------------------------------------------
>
> Key: IGNITE-15605
> URL: https://issues.apache.org/jira/browse/IGNITE-15605
> Project: Ignite
> Issue Type: Bug
> Components: sql
> Reporter: Evgeny Stanilovsky
> Assignee: Evgeny Stanilovsky
> Priority: Major
> Labels: calcite, calcite2-required, calcite3-required, ignite-3
>
> {noformat}
> statement ok
> CREATE TABLE integers(i INTEGER)
> statement ok
> INSERT INTO integers VALUES (1), (2), (3), (NULL)
> query R SELECT i, SUM(i), (SELECT SUM(i)+SUM(i1.i) FROM integers) FROM
> integers i1 GROUP BY i ORDER BY i;
> ----
> 1 1.000000 10
> 2 2.000000 14
> 3 3.000000 18
> NULL NULL NULL {noformat}
> {noformat}
> /subquery/scalar/test_correlated_aggregate_subquery.test_ignore
> /subquery/scalar/test_varchar_correlated_subquery.test_ignore
> {noformat}
>
> {code:java}
> Caused by: java.lang.ClassCastException: class java.lang.Long cannot be cast
> to class java.lang.Integer (java.lang.Long and java.lang.Integer are in
> module java.base of loader 'bootstrap')
> at SC.execute(Unknown Source)
> at
> org.apache.ignite.internal.sql.engine.exec.exp.ExpressionFactoryImpl$ProjectImpl.apply(ExpressionFactoryImpl.java:654)
> at
> org.apache.ignite.internal.sql.engine.exec.rel.StorageScanNode.push(StorageScanNode.java:197)
> at
> org.apache.ignite.internal.sql.engine.exec.rel.StorageScanNode$SubscriberImpl.lambda$onComplete$2(StorageScanNode.java:303)
> at
> org.apache.ignite.internal.sql.engine.exec.ExecutionContext.lambda$execute$0(ExecutionContext.java:315){code}
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
