Paul Lin created FLINK-24628:
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Summary: 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
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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