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Flink Jira Bot updated FLINK-21573: ----------------------------------- Labels: auto-deprioritized-major (was: stale-major) Priority: Minor (was: Major) This issue was labeled "stale-major" 7 days ago and has not received any updates so it is being deprioritized. If this ticket is actually Major, please raise the priority and ask a committer to assign you the issue or revive the public discussion. > Support expression reuse in codegen > ----------------------------------- > > Key: FLINK-21573 > URL: https://issues.apache.org/jira/browse/FLINK-21573 > Project: Flink > Issue Type: Improvement > Components: Table SQL / Runtime > Reporter: Benchao Li > Priority: Minor > Labels: auto-deprioritized-major > > Currently there is no expression reuse in codegen, and this may result in > more CPU overhead in some cases. E.g. > {code:java} > SELECT my_map['key1'] as key1, my_map['key2'] as key2, my_map['key3'] as key3 > FROM ( > SELECT dump_json_to_map(col1) as my_map > FROM T > ) > {code} > `dump_json_to_map` will be called 3 times. -- This message was sent by Atlassian Jira (v8.3.4#803005)