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https://issues.apache.org/jira/browse/FLINK-12562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17337207#comment-17337207
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Leonard Xu commented on FLINK-12562:
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[~godfreyhe] Could you take over this one? it's a code cleanup
> Improve code in ExpandColumnFunctionsRule
> -----------------------------------------
>
> Key: FLINK-12562
> URL: https://issues.apache.org/jira/browse/FLINK-12562
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Reporter: Hequn Cheng
> Priority: Major
> Labels: auto-unassigned, pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Enable most IntelliJ warnings and resolve these warnings.
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