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Posted to issues-all@impala.apache.org by "Fucun Chu (Jira)" <ji...@apache.org> on 2021/07/31 10:00:02 UTC

[jira] [Created] (IMPALA-10835) Extend the ds_hll_sketch() function to accept a precision

Fucun Chu created IMPALA-10835:
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             Summary: Extend the ds_hll_sketch() function to accept a precision
                 Key: IMPALA-10835
                 URL: https://issues.apache.org/jira/browse/IMPALA-10835
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
            Reporter: Fucun Chu
            Assignee: Fucun Chu


Like [IMPALA-2658|https://issues.apache.org/jira/browse/IMPALA-2658], an optional parameter is added to solve the limitation of the precision of the ds_hll_sketch function.

{code:java}
   DS_HLL_SKETCH(expression [, precision])
{code}

The precision value must be between 4 and 21. The default is 12.



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