[jira] [Commented] (CALCITE-1515) Support TableFunctionScan in RelBuilder

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

    [ https://issues.apache.org/jira/browse/CALCITE-1515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15795649#comment-15795649 ] 

Julian Hyde commented on CALCITE-1515:
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[~anmu], You don't need a RelOptTable to create a TableFunctionScan. You need a RexCall. As long as it's a call to a table function you should be set.

> Support TableFunctionScan in RelBuilder
> ---------------------------------------
>
>                 Key: CALCITE-1515
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1515
>             Project: Calcite
>          Issue Type: Bug
>    Affects Versions: 1.10.0
>            Reporter: Anton Mushin
>            Assignee: Julian Hyde
>            Priority: Minor
>
> Calcite has a TableFunctionScan, which is a RelNode, takes a function, 0 or more RelNode inputs, and 0 or more other arguments.
> RelBuilder does not support TableFunctionScan yet. 
> add In RelBuilder TableFunctionScanFactory which will create LogicalTableFunctionScan like as for LogicalTableScan and factory for others RelNodes [ [example|https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/tools/RelBuilder.java#L125] ]
> also adding a functionScan method, analogous to the scan method but for table functions.



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