[ https://issues.apache.org/jira/browse/IMPALA-10836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sheng Wang resolved IMPALA-10836. --------------------------------- Resolution: Fixed > Add simplify cast rule > ---------------------- > > Key: IMPALA-10836 > URL: https://issues.apache.org/jira/browse/IMPALA-10836 > Project: IMPALA > Issue Type: Improvement > Components: Frontend > Reporter: Xianqing He > Assignee: Sheng Wang > Priority: Major > Fix For: Impala 4.1.0 > > > For the function cast we can add the following optimizations: > # Removes the inner case conversion expressions that are unnecessary, e.g. > cast(cast(col as int) as string) => cast(col as string) > # Removes unnecessary cast when the input is already the correct type, e.g. > col is bigint, cast(col as bigint) => col -- This message was sent by Atlassian Jira (v8.3.4#803005)