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https://issues.apache.org/jira/browse/SPARK-26826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Petar Zecevic updated SPARK-26826:
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Description:
This ticket proposes two extra array functions: {{array_allpositions}} (named
after {{array_position}}) and {{array_select}}. These functions should make it
easier to:
* get an array of indices of all occurences of a value in an array
({{array_allpositions}})
* select all elements of an array based on an array of indices
({{array_select}})
Although higher-order functions, such as {{aggregate}} and {{transform}}, have
been recently added, performing tasks above is still not simple, hence this
addition.
was:
This ticket proposes two extra array functions: `array_allpositions` (named
after `array_position`) and `array_select`. These functions should make it
easier to:
* get an array of indices of all occurences of a value in an array
(`array_allpositions`)
* select all elements of an array based on an array of indices (`array_select`)
Although higher-order functions, such as `aggregate` and `transform`, have been
recently added, performing tasks above is still not simple, hence this addition.
> Array indexing functions array_allpositions and array_select
> ------------------------------------------------------------
>
> Key: SPARK-26826
> URL: https://issues.apache.org/jira/browse/SPARK-26826
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Petar Zecevic
> Priority: Major
>
> This ticket proposes two extra array functions: {{array_allpositions}} (named
> after {{array_position}}) and {{array_select}}. These functions should make
> it easier to:
> * get an array of indices of all occurences of a value in an array
> ({{array_allpositions}})
> * select all elements of an array based on an array of indices
> ({{array_select}})
> Although higher-order functions, such as {{aggregate}} and {{transform}},
> have been recently added, performing tasks above is still not simple, hence
> this addition.
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