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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2019/04/25 16:57:03 UTC

[jira] [Assigned] (SPARK-27425) Add count_if functions

     [ https://issues.apache.org/jira/browse/SPARK-27425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-27425:
------------------------------------

    Assignee: Apache Spark

> Add count_if functions
> ----------------------
>
>                 Key: SPARK-27425
>                 URL: https://issues.apache.org/jira/browse/SPARK-27425
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.1
>            Reporter: Chaerim Yeo
>            Assignee: Apache Spark
>            Priority: Minor
>
> Add aggregation function which returns the number of records satisfying a given condition.
> For Presto, [{{count_if}}|https://prestodb.github.io/docs/current/functions/aggregate.html] function is supported, we can write concisely.
> However, Spark does not support yet, we need to write like {{COUNT(CASE WHEN some_condition THEN 1 END)}} or {{SUM(CASE WHEN some_condition THEN 1 END)}}, which looks painful.



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