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https://issues.apache.org/jira/browse/CALCITE-4673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17373452#comment-17373452
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Stanilovsky Evgeny commented on CALCITE-4673:
---------------------------------------------

[~zabetak] i try to append such test into sub-query.iq and obtain : 
Error while executing SQL "select e.deptno, (select * from lateral 
table(DEDUP(e.deptno, e.deptno))) from dept e": From line 1, column 47 to line 
1, column 71: No match found for function signature DEDUP(<NUMERIC>, <NUMERIC>) 
can you point me how can i rewrite such a test if i want 2 corr param into udf, 
like mentioned :  system_range(t.id, t.id) ? thanks !

> Correlate variables deduplication is not triggered when custom table function 
> presented.
> ----------------------------------------------------------------------------------------
>
>                 Key: CALCITE-4673
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4673
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.27.0
>            Reporter: Stanilovsky Evgeny
>            Assignee: Stanilovsky Evgeny
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> request like:
> {noformat}
> select e.deptno, (select * from lateral table(DEDUP(e.deptno, e.deptno))) 
> from emp e;
> {noformat}
> shows 2 different correlates, while it only one.
> {noformat}
> LogicalProject(DEPTNO=[$7], EXPR$1=[$SCALAR_QUERY({
> LogicalProject(NAME=[$0])
>   LogicalTableFunctionScan(invocation=[DEDUP($cor0.DEPTNO, $cor1.DEPTNO)], 
> rowType=[RecordType(VARCHAR(1024) NAME)])
> })])
>   LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> {noformat}
> [dev-list 
> discussion|https://lists.apache.org/thread.html/re20d580a979585ae946d61df80a345c70ae2b5a92577a8b5db1e2c50%40<dev.calcite.apache.org>]



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