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Posted to issues@beam.apache.org by "Kenneth Knowles (JIRA)" <ji...@apache.org> on 2018/10/23 03:45:00 UTC

[jira] [Created] (BEAM-5829) SQL should probably not support GROUP BY or set operations on floating point numbers

Kenneth Knowles created BEAM-5829:
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             Summary: 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
            Reporter: Kenneth Knowles
            Assignee: Kenneth Knowles


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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