liu ming created TRAFODION-3137:

             Summary: speed up count(*) by read row count from stats in special 
use cases
                 Key: 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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