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https://issues.apache.org/jira/browse/SPARK-27297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nikolas Vanderhoof updated SPARK-27297:
---------------------------------------
Description:
There is currently no existing Scala API equivalent for the higher order
functions introduced in Spark 2.4.0.
* transform
* aggregate
* filter
* exists
* zip_with
* map_zip_with
* map_filter
* transform_values
* transform_keys
Equivalent column based functions should be added to the Scala API for
org.apache.spark.sql.functions with the following signatures:
{code:java}
def transform(column: Column, f: Column => Column): Column = ???
def transform(column: Column, f: (Column, Column) => Column): Column = ???
def exists(column: Column, f: Column => Column): Column = ???
def filter(column: Column, f: Column => Column): Column = ???
def aggregate(
expr: Column,
zero: Column,
merge: (Column, Column) => Column,
finish: Column => Column): Column = ???
def aggregate(
expr: Column,
zero: Column,
merge: (Column, Column) => Column): Column = ???
def zip_with(
left: Column,
right: Column,
f: (Column, Column) => Column): Column = ???
def transform_keys(expr: Column, f: (Column, Column) => Column): Column = ???
def transform_values(expr: Column, f: (Column, Column) => Column): Column = ???
def map_filter(expr: Column, f: (Column, Column) => Column): Column = ???
def map_zip_with(left: Column, right: Column, f: (Column, Column, Column) =>
Column): Column = ???
{code}
was:
There is currently no existing Scala API equivalent for the higher order
functions introduced in Spark 2.4.0.
* transform
* aggregate
* filter
* exists
* zip_with
* map_zip_with
* map_filter
* transform_values
* transform_keys
Equivalent column based functions should be added to the Scala API for
org.apache.spark.sql.functions.
> Add higher order functions to org.apache.spark.sql.functions
> ------------------------------------------------------------
>
> Key: SPARK-27297
> URL: https://issues.apache.org/jira/browse/SPARK-27297
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Nikolas Vanderhoof
> Priority: Major
>
> There is currently no existing Scala API equivalent for the higher order
> functions introduced in Spark 2.4.0.
> * transform
> * aggregate
> * filter
> * exists
> * zip_with
> * map_zip_with
> * map_filter
> * transform_values
> * transform_keys
> Equivalent column based functions should be added to the Scala API for
> org.apache.spark.sql.functions with the following signatures:
>
> {code:java}
> def transform(column: Column, f: Column => Column): Column = ???
> def transform(column: Column, f: (Column, Column) => Column): Column = ???
> def exists(column: Column, f: Column => Column): Column = ???
> def filter(column: Column, f: Column => Column): Column = ???
> def aggregate(
> expr: Column,
> zero: Column,
> merge: (Column, Column) => Column,
> finish: Column => Column): Column = ???
> def aggregate(
> expr: Column,
> zero: Column,
> merge: (Column, Column) => Column): Column = ???
> def zip_with(
> left: Column,
> right: Column,
> f: (Column, Column) => Column): Column = ???
> def transform_keys(expr: Column, f: (Column, Column) => Column): Column = ???
> def transform_values(expr: Column, f: (Column, Column) => Column): Column =
> ???
> def map_filter(expr: Column, f: (Column, Column) => Column): Column = ???
> def map_zip_with(left: Column, right: Column, f: (Column, Column, Column) =>
> Column): Column = ???
> {code}
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