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Posted to dev@hive.apache.org by "Jesus Camacho Rodriguez (Jira)" <ji...@apache.org> on 2020/09/13 01:24:00 UTC

[jira] [Created] (HIVE-24154) Missing simplification opportunity with IN and EQUALS clauses

Jesus Camacho Rodriguez created HIVE-24154:
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             Summary: Missing simplification opportunity with IN and EQUALS clauses
                 Key: HIVE-24154
                 URL: https://issues.apache.org/jira/browse/HIVE-24154
             Project: Hive
          Issue Type: Improvement
          Components: CBO
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez


For instance, in perf driver CBO query 74, there are several filters that could be simplified further:
{code}
HiveFilter(condition=[AND(=($1, 1999), IN($1, 1998, 1999))])
{code}
This may lead to incorrect estimates and leads to unnecessary execution time.



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