beyond1920 edited a comment on issue #9285: [FLINK-13433][table-planner-blink] Do not fetch data from LookupableTableSource if the JoinKey in left side of LookupJoin contains null value. URL: https://github.com/apache/flink/pull/9285#issuecomment-516746938 @JingsongLi At first glance, I guess the query is not supported. However, after run it actually, The query could be executed, but results in error outputs. Because LookupJoin does not take filterNulls (which says k=v or k is not distinct from v) into consideration. Good catch, I will looks into the problem.
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