Maciej Szymkiewicz created SPARK-30569:
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Summary: Add DSL functions invoking percentile_approx
Key: SPARK-30569
URL: https://issues.apache.org/jira/browse/SPARK-30569
Project: Spark
Issue Type: Improvement
Components: PySpark, SQL
Affects Versions: 3.0.0
Reporter: Maciej Szymkiewicz
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}}.
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