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From "Kevin Wilfong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-2427) Warn user that precision is lost when bigint is implicitly cast to double in joins and unions.
Date Fri, 02 Sep 2011 16:49:10 GMT
Warn user that precision is lost when bigint is implicitly cast to double in joins and unions.
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                 Key: HIVE-2427
                 URL: https://issues.apache.org/jira/browse/HIVE-2427
             Project: Hive
          Issue Type: Improvement
            Reporter: Kevin Wilfong
            Assignee: Kevin Wilfong


When a bigint is implicitly cast to a double (when a bigint is involved in an equality expression
with a string or double as part of a join condition, or when a bigint column is to be combined
with a string or double column as part of a union) precision may be lost, resulting in unexpected
behavior. Until we fix the underlying issue we should throw an error in strict mode, and a
warning in nonstrict mode alerting the user about this.

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