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https://issues.apache.org/jira/browse/BEAM-6112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17137623#comment-17137623
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Beam JIRA Bot commented on BEAM-6112:
-------------------------------------
This issue is P2 but has been unassigned without any comment for 60 days so it
has been labeled "stale-P2". If this issue is still affecting you, we care!
Please comment and remove the label. Otherwise, in 14 days the issue will be
moved to P3.
Please see https://beam.apache.org/contribute/jira-priorities/ for a detailed
explanation of what these priorities mean.
> SQL could support equijoins on complex expressions, not just column refs
> ------------------------------------------------------------------------
>
> Key: BEAM-6112
> URL: https://issues.apache.org/jira/browse/BEAM-6112
> Project: Beam
> Issue Type: New Feature
> Components: dsl-sql
> Reporter: Kenneth Knowles
> Priority: P2
> Labels: stale-P2
>
> Currently a join such as {{CAST(A.x AS BIGINT) = B.y}} will fail, along with
> other similar simple expressions. We only support joining directly on
> immediate column references. It can be worked around by inserting a WITH
> clause for the intermediate value.
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