You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "Xiao Li (Jira)" <ji...@apache.org> on 2019/09/12 23:40:00 UTC
[jira] [Closed] (SPARK-27980) Ordered-Set Aggregate Functions
[ https://issues.apache.org/jira/browse/SPARK-27980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiao Li closed SPARK-27980.
---------------------------
> Ordered-Set Aggregate Functions
> -------------------------------
>
> Key: SPARK-27980
> URL: https://issues.apache.org/jira/browse/SPARK-27980
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Yuming Wang
> Priority: Major
>
> ||Function||Direct Argument Type(s)||Aggregated Argument Type(s)||Return Type||Partial Mode||Description||
> |{{mode() WITHIN GROUP (ORDER BY sort_expression)}}| |any sortable type|same as sort expression|No|returns the most frequent input value (arbitrarily choosing the first one if there are multiple equally-frequent results)|
> |{{percentile_cont(_fraction_}}) WITHIN GROUP (ORDER BY {{sort_expression}})|{{double precision}}|{{double precision}} or {{interval}}|same as sort expression|No|continuous percentile: returns a value corresponding to the specified fraction in the ordering, interpolating between adjacent input items if needed|
> |{{percentile_cont(_fractions_}}) WITHIN GROUP (ORDER BY {{sort_expression}})|{{double precision[]}}|{{double precision}} or {{interval}}|array of sort expression's type|No|multiple continuous percentile: returns an array of results matching the shape of the _{{fractions}}_ parameter, with each non-null element replaced by the value corresponding to that percentile|
> |{{percentile_disc(_fraction_}}) WITHIN GROUP (ORDER BY {{sort_expression}})|{{double precision}}|any sortable type|same as sort expression|No|discrete percentile: returns the first input value whose position in the ordering equals or exceeds the specified fraction|
> |{{percentile_disc(_fractions_}}) WITHIN GROUP (ORDER BY {{sort_expression}})|{{double precision[]}}|any sortable type|array of sort expression's type|No|multiple discrete percentile: returns an array of results matching the shape of the _{{fractions}}_ parameter, with each non-null element replaced by the input value corresponding to that percentile|
> [https://www.postgresql.org/docs/11/functions-aggregate.html#FUNCTIONS-ORDEREDSET-TABLE]
--
This message was sent by Atlassian Jira
(v8.3.2#803003)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org