Timo Walther created FLINK-24116:
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             Summary: PRIMARY KEY declaration on insert-only table is not 
validated globally
                 Key: FLINK-24116
                 URL: https://issues.apache.org/jira/browse/FLINK-24116
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / API
            Reporter: Timo Walther


In the regular Kafka connector, we validate that a primary key is not defined 
on an insert-only table source:

https://github.com/apache/flink/pull/13850/commits/c1d4dc89fa629e0f04102e7ab2fa94984cd98218

However, this should be validated for every connector because it is confusing 
if it works for others. We should validate this in the planner instead.



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