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https://issues.apache.org/jira/browse/FLINK-36085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Nuyanzin resolved FLINK-36085.
-------------------------------------
    Fix Version/s: 2.0.0
       Resolution: Fixed

> Refactor SHOW operations with LIKE/ILIKE
> ----------------------------------------
>
>                 Key: FLINK-36085
>                 URL: https://issues.apache.org/jira/browse/FLINK-36085
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / API, Table SQL / Planner
>            Reporter: Sergey Nuyanzin
>            Assignee: Sergey Nuyanzin
>            Priority: Major
>             Fix For: 2.0.0
>
>
> Current implementation has several issues
> 1. every operation implements its own support of {{LIKE}}, {{ILIKE}} while 
> common logic could be extracted and reused
> 2. Some operation generate invalid SQL for asSummaryString and the format is 
> different between show operations
> 3. Some operations throw NPE if database or catalog is not set instead of 
> ValidationException
> so the logic could be generalized for this {{SQL SHOW}} operations 



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