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https://issues.apache.org/jira/browse/SPARK-27425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chaerim Yeo updated SPARK-27425:
--------------------------------
Description:
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.
was:
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)}} or {{sum(case when some_condition then 1 end)}}, which
looks painful.
> 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
> 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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