[
https://issues.apache.org/jira/browse/IMPALA-10580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Fucun Chu updated IMPALA-10580:
-------------------------------
Description:
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_union_f(sketch1, sketch2)) |
+-------------------------------------------------------+
| 15 |
+-------------------------------------------------------+{code}
was:
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}
> 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
> Priority: Major
> 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_union_f(sketch1, sketch2)) |
> +-------------------------------------------------------+
> | 15 |
> +-------------------------------------------------------+{code}
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