Serge Rielau created SPARK-41668: ------------------------------------ Summary: DECODE function returns wrong results when passed NULL Key: SPARK-41668 URL: https://issues.apache.org/jira/browse/SPARK-41668 Project: Spark Issue Type: Bug Components: Spark Core Affects Versions: 3.1.2 Reporter: Serge Rielau
The DECODE function was implemented for Oracle compatibility. It works similar to CASE expression, but it is supposed to have one major difference: NULL == NULL [https://docs.oracle.com/database/121/SQLRF/functions057.htm#SQLRF00631] The Spark implementation does not observe this however: select decode(null, 6, 'Spark', NULL, 'SQL', 4, 'rocks'); NULL The result is supposed to be 'SQL' -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org