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Posted to issues@spark.apache.org by "Marco Gaido (JIRA)" <ji...@apache.org> on 2019/01/04 16:44:00 UTC

[jira] [Created] (SPARK-26535) Parsing literals as DOUBLE instead of DECIMAL

Marco Gaido created SPARK-26535:
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             Summary: Parsing literals as DOUBLE instead of DECIMAL
                 Key: SPARK-26535
                 URL: https://issues.apache.org/jira/browse/SPARK-26535
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Marco Gaido


As pointed out by [~dkbiswal]'s comment https://github.com/apache/spark/pull/22450#issuecomment-423082389, most of other RDBMS (DB2, Presto, Hive, MSSQL) consider literals as DOUBLE by default.

Spark as of now consider them as DECIMAL. This is quite problematic especially in relation with the operations on decimal, for which we base our implementation on Hive/MSSQL.

So this ticket is for moving by default the resolution of literals as DOUBLE, but with a config which allows to get back to the previous behavior.



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