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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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Apache Spark reassigned SPARK-26826:
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Assignee: (was: Apache Spark)
> 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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