[SPARK-30569] Add DSL functions invoking percentile_approx

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: PySpark, SQL
• Assignee: Maciej Szymkiewicz
• Reporter: Maciej Szymkiewicz
• Created: 19/Jan/20 12:48
• Updated: 12/Dec/22 18:10
• Resolved: 17/Mar/20 01:45

Description

Since 2.1 (SPARK-16283) Spark provides percentile_approx SQL function, however it is not exposed through DSL, with exception to `DataFrameStatFunctions.approxQuantile` (which is eager and doesn't support grouping).

It would be useful to have it exposed through o.a.s.sql.functions / pyspark.sql.functions.

Issue Links

• links to: GitHub Pull Request #27278