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https://issues.apache.org/jira/browse/SPARK-16046?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li updated SPARK-16046:
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Description:
- A separate subsection for Aggregations under “Getting Started” in the Spark
SQL programming guide. It mentions which aggregate functions are predefined and
how users can create their own.
- Examples of using the UserDefinedAggregateFunction abstract class for untyped
aggregations in Java and Scala.
- Examples of using the Aggregator abstract class for type-safe aggregations in
Java and Scala.
was:
Issue to update the Spark SQL guide to provide more content around using
Datasets. This would expand the Creating Datasets section of the Spark SQL
documentation.
Goals
1. Add more examples of column access via $ and `
2. Add examples of aggregates
3. Add examples of using Spark SQL functions
What else would be useful to have?
> Add examples of aggregates
> --------------------------
>
> Key: SPARK-16046
> URL: https://issues.apache.org/jira/browse/SPARK-16046
> Project: Spark
> Issue Type: Documentation
> Components: Documentation, SQL
> Affects Versions: 2.0.0
> Reporter: Pedro Rodriguez
> Fix For: 2.1.1, 2.2.0
>
>
> - A separate subsection for Aggregations under “Getting Started” in the Spark
> SQL programming guide. It mentions which aggregate functions are predefined
> and how users can create their own.
> - Examples of using the UserDefinedAggregateFunction abstract class for
> untyped aggregations in Java and Scala.
> - Examples of using the Aggregator abstract class for type-safe aggregations
> in Java and Scala.
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