You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues-all@impala.apache.org by "Fucun Chu (Jira)" <ji...@apache.org> on 2021/03/10 13:55:00 UTC

[jira] [Created] (IMPALA-10580) Implement ds_theta_union_f() function.

Fucun Chu created IMPALA-10580:
----------------------------------

             Summary: Implement ds_theta_union_f() function.
                 Key: IMPALA-10580
                 URL: https://issues.apache.org/jira/browse/IMPALA-10580
             Project: IMPALA
          Issue Type: New Feature
          Components: Backend, Frontend
            Reporter: Fucun Chu
            Assignee: Fucun Chu
             Fix For: Impala 4.0


This function receives two strings that are serialized Apache DataSketches Theta sketches. Union two sketches and returns the resulting sketch of union.

Example:
{code:java}
select ds_theta_estimate(ds_theta_union_f(sketch1, sketch2))
from sketch_tbl;
+-------------------------------------------------------+
| ds_theta_estimate(ds_theta_exclude(sketch1, sketch2)) |
+-------------------------------------------------------+
| 5                                                     |
+-------------------------------------------------------+{code}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-all-unsubscribe@impala.apache.org
For additional commands, e-mail: issues-all-help@impala.apache.org