beliefer opened a new pull request #27440: [SPARK-27951][SQL] Support ANSI SQL NTH_VALUE window function URL: https://github.com/apache/spark/pull/27440 ### What changes were proposed in this pull request? The `NTH_VALUE` function is an ANSI SQL. There are some mainstream database support the syntax. **PostgreSQL:** https://www.postgresql.org/docs/8.4/functions-window.html **Vertica:** https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/SQLReferenceManual/Functions/Analytic/NTH_VALUEAnalytic.htm?tocpath=SQL%20Reference%20Manual%7CSQL%20Functions%7CAnalytic%20Functions%7C_____23 **Oracle:** https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/NTH_VALUE.html#GUID-F8A0E88C-67E5-4AA6-9515-95D03A7F9EA0 ### Why are the changes needed? The `NTH_VALUE` function is an ANSI SQL. The `NTH_VALUE` function is very useful. ### Does this PR introduce any user-facing change? No ### How was this patch tested? Exists and new UT.
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
