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https://issues.apache.org/jira/browse/CALCITE-35?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16836736#comment-16836736
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Julian Hyde commented on CALCITE-35:
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What happens if you make this change to the core parser? If it passes the
tests, we would like it in the base parser. If it doesn't pass the tests, we
probably don't want it in either core or Babel.
> Support parenthesized sub-clause in JOIN
> ----------------------------------------
>
> Key: CALCITE-35
> URL: https://issues.apache.org/jira/browse/CALCITE-35
> Project: Calcite
> Issue Type: Bug
> Reporter: GitHub Import
> Priority: Major
> Labels: github-import, pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> SQL-92 allows joins to be grouped into trees using parentheses. For example,
> select * from a join (b join c on b.x = c.x) on a.y = c.y
> Optiq should support this. Currently this gives
> "org.eigenbase.util.EigenbaseException: Non-query expression encountered in
> illegal context".
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/julianhyde/optiq/issues/35
> Created by: [julianhyde|https://github.com/julianhyde]
> Labels:
> Created at: Fri Apr 19 02:46:01 CEST 2013
> State: open
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