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https://issues.apache.org/jira/browse/CALCITE-4253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17194857#comment-17194857
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Julian Hyde commented on CALCITE-4253:
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RelMetadataQuery is a higher-level system. There are contexts where creating a
RelMetadataQuery is not possible or not efficient. So, if there is common code,
it should probably be in RelOptUtil.
> RelOptUtil#findAllTables should probably use
> RelMetadataQuery#getTableReferences
> --------------------------------------------------------------------------------
>
> Key: CALCITE-4253
> URL: https://issues.apache.org/jira/browse/CALCITE-4253
> Project: Calcite
> Issue Type: Sub-task
> Components: core
> Affects Versions: 1.25.0
> Reporter: Vladimir Sitnikov
> Priority: Minor
>
> It looks like both methods do exactly the same thing, so it would probably
> make sense to divert {{findAllTables}} to
> {{RelMetadataQuery#getTableReferences}}
> If methods are different, it would make sense to add the relevant
> documentation and cross-references.
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