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Posted to issues@impala.apache.org by "Fucun Chu (Jira)" <ji...@apache.org> on 2021/02/01 13:42:00 UTC

[jira] [Created] (IMPALA-10467) Implement ds_theta_union() function

Fucun Chu created IMPALA-10467:
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             Summary: Implement ds_theta_union() function
                 Key: IMPALA-10467
                 URL: https://issues.apache.org/jira/browse/IMPALA-10467
             Project: IMPALA
          Issue Type: New Feature
            Reporter: Fucun Chu
            Assignee: Fucun Chu


Similarly to https://issues.apache.org/jira/browse/IMPALA-9633 DataSketches Theta also has union functionality.

ds_theta_union() expects a dataset of STRINGs (e.g. column of a table) that represents serialized Theta sketches and returns a single STRING that is the received sketches unioned and serialized.



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