Petar Zecevic created SPARK-26826:
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Summary: 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
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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