[ https://issues.apache.org/jira/browse/SPARK-17997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan reopened SPARK-17997: --------------------------------- Assignee: Zhenhua Wang > Aggregation function for counting distinct values for multiple intervals > ------------------------------------------------------------------------ > > Key: SPARK-17997 > URL: https://issues.apache.org/jira/browse/SPARK-17997 > Project: Spark > Issue Type: Sub-task > Components: SQL > Affects Versions: 2.3.0 > Reporter: Zhenhua Wang > Assignee: Zhenhua Wang > > This is for computing ndv's for bins in equi-height histograms. A bin > consists of two endpoints which form an interval of values and the ndv in > that interval. For computing histogram statistics, after getting the > endpoints, we need an agg function to count distinct values in each interval. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org