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Posted to issues@calcite.apache.org by "Stamatis Zampetakis (JIRA)" <ji...@apache.org> on 2019/07/03 09:26:00 UTC
[jira] [Commented] (CALCITE-3171) RelOptUtil#pushDownJoinConditions
should handle SEMI/ANTI join specially about project shift mapping
[ https://issues.apache.org/jira/browse/CALCITE-3171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16877673#comment-16877673 ]
Stamatis Zampetakis commented on CALCITE-3171:
----------------------------------------------
I guess this is related to CALCITE-3170. Is it different?
> RelOptUtil#pushDownJoinConditions should handle SEMI/ANTI join specially about project shift mapping
> ----------------------------------------------------------------------------------------------------
>
> Key: CALCITE-3171
> URL: https://issues.apache.org/jira/browse/CALCITE-3171
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.19.0
> Reporter: godfrey he
> Priority: Major
>
> the following code in RelOptUtil#pushDownJoinConditions only does not consider SEMI/ANTI join
> {code:java}
> if (!extraLeftExprs.isEmpty() || !extraRightExprs.isEmpty()) {
> Mappings.TargetMapping mapping =
> Mappings.createShiftMapping(
> leftCount + extraLeftExprs.size()
> + rightCount + extraRightExprs.size(),
> 0, 0, leftCount,
> leftCount, leftCount + extraLeftExprs.size(), rightCount);
> relBuilder.project(relBuilder.fields(mapping.inverse()));
> }
> {code}
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