[ https://issues.apache.org/jira/browse/SPARK-28648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dylan Guedes updated SPARK-28648: --------------------------------- Summary: Adds support to `groups` unit type in window clauses (was: Adds support to `groups` in window clauses) > Adds support to `groups` unit type in window clauses > ---------------------------------------------------- > > Key: SPARK-28648 > URL: https://issues.apache.org/jira/browse/SPARK-28648 > Project: Spark > Issue Type: Sub-task > Components: SQL > Affects Versions: 3.0.0 > Reporter: Dylan Guedes > Priority: Major > > Spark currently support the two most common window functions unit types: rows > and ranges. However, in PgSQL a new type was added: `groups`. > According to [this > source|https://blog.jooq.org/2018/07/05/postgresql-11s-support-for-sql-standard-groups-and-exclude-window-function-clauses/], > the difference is: > """ROWS counts the exact number of rows in the frame. > RANGE performs logical windowing where we don’t count the number of rows, but > look for a value offset. > GROUPS counts all groups of tied rows within the window.""" -- This message was sent by Atlassian JIRA (v7.6.14#76016) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org