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https://issues.apache.org/jira/browse/BEAM-5829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16734573#comment-16734573
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Kenneth Knowles commented on BEAM-5829:
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Actually, I think the SQL layer does not reject it, but allows Beam to reject.
It should be caught in SQL.
> SQL should probably not support GROUP BY or set operations on floating point
> numbers
> ------------------------------------------------------------------------------------
>
> Key: BEAM-5829
> URL: https://issues.apache.org/jira/browse/BEAM-5829
> Project: Beam
> Issue Type: Bug
> Components: dsl-sql, test-failures
> Reporter: Kenneth Knowles
> Assignee: Kenneth Knowles
> Priority: Major
> Time Spent: 40m
> Remaining Estimate: 0h
>
> These are known to be super unreliable on most SQL engines, and generally
> indicate a programming error. Floating points numbers are intended as
> stand-ins for real numbers, for which equality (hence grouping and set
> operations) are undecidable. And our build is broken because of it.
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