Github user haohui commented on the issue:
https://github.com/apache/flink/pull/3712
It is important to have some flexibility on the query as different SQL
engines have slightly different syntax on DML.
For example, SQLite supports INSERT OVERWRITE where MySQL supports REPLACE
INTO to upsert records with unique keys.
I like the APIs you proposed, do you think it addresses your concerns if it
forwards the parameters to JDbCOutputFormat and construct it internally?
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