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https://issues.apache.org/jira/browse/IGNITE-25110?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Evgeny Stanilovsky reassigned IGNITE-25110:
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Assignee: Evgeny Stanilovsky
> Sql. Investigate possibility to use query decorrelation
> -------------------------------------------------------
>
> Key: IGNITE-25110
> URL: https://issues.apache.org/jira/browse/IGNITE-25110
> Project: Ignite
> Issue Type: Task
> Components: sql
> Affects Versions: 3.0.0-beta1
> Reporter: Evgeny Stanilovsky
> Assignee: Evgeny Stanilovsky
> Priority: Major
> Labels: ignite-3
>
> This issue is the same as [1] but targeted for ai-3.
> Seems also numerous tests are failed from SqlLogicTests during decorrelation
> enabled.
> Set of failed tests:
> {noformat}
> test_not_distinct_from.test
> test_correlated_any_all.test
> test_correlated_exists.test
> test_correlated_aggregate_subquery.test
> test_correlated_subquery.test
> test_correlated_subquery_cte.test
> test_count_star_subquery.test
> {noformat}
> *test_correlated_exists.test* can be fixed in
> org.apache.calcite.sql2rel.RelDecorrelator#decorrelateRel(org.apache.calcite.rel.core.Correlate,
> boolean)
> Original:
> {noformat}
> conditions.add(
> relBuilder.equals(RexInputRef.of(newLeftPos, newLeftOutput),
> new RexInputRef(newLeftFieldCount + newRightPos,
> newRightOutput.get(newRightPos).getType())));
> {noformat}
> seems need to be changed to:
> {noformat}
> conditions.add(
> relBuilder.isNotDistinctFrom(RexInputRef.of(newLeftPos,
> newLeftOutput),
> new RexInputRef(newLeftFieldCount + newRightPos,
> newRightOutput.get(newRightPos).getType())));
> {noformat}
> [1] https://issues.apache.org/jira/browse/IGNITE-16493
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