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https://issues.apache.org/jira/browse/FLINK-24628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17437800#comment-17437800
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Martijn Visser commented on FLINK-24628:
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[~Paul Lin] I've assigned it to you
> Invalid JDBC query template when no fields are selected
> -------------------------------------------------------
>
> Key: FLINK-24628
> URL: https://issues.apache.org/jira/browse/FLINK-24628
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC
> Affects Versions: 1.12.3
> Reporter: Paul Lin
> Assignee: Paul Lin
> Priority: Minor
>
> A query like `select uuid() from mysql_table` will result in an invalid query
> template like `select from mysql_table` in JdbcDynamicTableSource.
> We should avoid making a TableScan when there're no relevant fields are
> actually used.
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