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https://issues.apache.org/jira/browse/FLINK-17388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17336214#comment-17336214
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Flink Jira Bot commented on FLINK-17388:
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This issue was labeled "stale-major" 7 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.
> flink sql The custom function in ROW type is executed multiple times
> ---------------------------------------------------------------------
>
> Key: FLINK-17388
> URL: https://issues.apache.org/jira/browse/FLINK-17388
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.9.1
> Reporter: cloudzhao
> Priority: Major
> Labels: stale-major
>
> val tableA = tableEnv.sqlQuery("select custom_func(a) as a, custom_func(b) as
> b from tableS")
> tableEnv.registerTable("tableA", tableA)
> val tableB = tableEnv.sqlQuery("select ROW(a, b) as body from tableA")
> tableEnv.registerTable("tableB", tableB)
> val tableC = tableEnv.sqlQuery("select body.a, body.b from tableB")
> In this logic, the custom_func is executed four times
> tableC === select Row(custom_func(a) as a, custom_func(b) as b).a,
> Row(custom_func(a) as a, custom_func(b) as b).b from tableS
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