[jira] [Comment Edited] (CALCITE-4630) Wrong logical plan for INNER JOIN with subquery

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

    [ https://issues.apache.org/jira/browse/CALCITE-4630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17359352#comment-17359352 ] 

Julian Hyde edited comment on CALCITE-4630 at 6/8/21, 6:02 PM:
---------------------------------------------------------------

Candidate fix: https://github.com/apache/calcite/pull/2429


was (Author: dmsysolyatin):
Fixed at https://github.com/apache/calcite/pull/2429

> Wrong logical plan for INNER JOIN with subquery
> -----------------------------------------------
>
>                 Key: CALCITE-4630
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4630
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.27.0
>            Reporter: Dmitry Sysolyatin
>            Assignee: Dmitry Sysolyatin
>            Priority: Critical
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> I tried to execute the following query:
> {code:sql}
> SELECT
>     d.name,
>     d.timestamp_ns
> FROM trucks t
> INNER JOIN LATERAL (
>   SELECT
>       name, timestamp_ns, fuel_state
>    FROM
>       trucks_diagnostics
>    WHERE
>        trucks_diagnostics.name = t.name
>     ORDER BY timestamp_ns DESC
>     LIMIT 1) d ON true WHERE t.fleet = 'South' AND d.fuel_state < 0.1
> {code}
> calcite generates me the following logical plan:
> {code:java}
> LogicalProject(name=[$8], timestamp_ns=[$9])
>   LogicalCorrelate(correlation=[$cor0], joinType=[inner], requiredColumns=[{4}])
>     LogicalFilter(condition=[=(CAST($6):VARCHAR, 'South')])
>       DataTableScan
>     LogicalFilter(condition=[<($2, 0.1:DECIMAL(2, 1))])
>       LogicalSort(sort0=[$1], dir0=[DESC], fetch=[1])
>         LogicalProject(name=[$4], timestamp_ns=[$0], fuel_state=[$1])
>           LogicalFilter(condition=[=(CAST($4):VARCHAR, CAST($cor0.name):VARCHAR)])
>             DataTableScan
> {code}
> But `LogicalFilter(condition=[<($2, 0.1:DECIMAL(2, 1))])` should not be inside LogicalCorrelate . It should be upper than LogicalCorrelate



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