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Posted to issues@trafodion.apache.org by "liu ming (JIRA)" <ji...@apache.org> on 2018/07/11 15:48:00 UTC

[jira] [Created] (TRAFODION-3137) speed up count(*) by read row count from stats in special use cases

liu ming created TRAFODION-3137:
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             Summary: speed up count(*) by read row count from stats in special use cases
                 Key: TRAFODION-3137
                 URL: https://issues.apache.org/jira/browse/TRAFODION-3137
             Project: Apache Trafodion
          Issue Type: Improvement
            Reporter: liu ming
            Assignee: liu ming


If the table is bulkload once and no change, and finish update statistics.

When doing count(*), there is no need to scan the whole table, but to read row count from stats



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