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The old repositories flink-sql-gateway[1] and flink-jdbc-driver[2] support submitting query to the older version of flink cluster version. But for the latest flink version cluster there are many compatibility problems. Flink Sql Gateway has been a submodule in Flink, and the API has been greatly optimized. The old Flink JDBC Driver cannot connect to the new Gateway directly which will cause users cannot upgrade their Flink Clusters. In this FLIP, we'd like to introduce Flink Jdbc Driver module in Flink to connect the new Gateway, users can use Jdbc Driver to submit their queries and get results like a database in their applications.

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