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Zhuoluo (Clark) Yang commented on HIVE-896: ------------------------------------------- I think it is necessary to have a kind of functions called UDWF (User-Defined Windowing Function). > Add LEAD/LAG/FIRST/LAST analytical windowing functions to Hive. > --------------------------------------------------------------- > > Key: HIVE-896 > URL: https://issues.apache.org/jira/browse/HIVE-896 > Project: Hive > Issue Type: New Feature > Reporter: Amr Awadallah > Priority: Minor > > Windowing functions are very useful for click stream processing and similar > time-series/sliding-window analytics. > More details at: > http://download-west.oracle.com/docs/cd/B13789_01/server.101/b10736/analysis.htm#i1006709 > http://download-west.oracle.com/docs/cd/B13789_01/server.101/b10736/analysis.htm#i1007059 > http://download-west.oracle.com/docs/cd/B13789_01/server.101/b10736/analysis.htm#i1007032 > -- amr -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira