[jira] (SPARK-19393) Add `approx_percentile` Dataset/DataFrame API

[Liwei Lin (JIRA)]

Title: Message Title

Liwei Lin updated an issue   Spark / SPARK-19393 Add `approx_percentile` Dataset/DataFrame API Change By: Liwei Lin Summary: Add `approx_percentile`  Dataframe  Dataset/DataFrame  API Add Comment   This message was sent by Atlassian JIRA (v6.3.15#6346-sha1:dbc023d)