[jira] [Created] (FLINK-18714) Support consuming multiple topics for KafkaTableSource

[Shang Yuanchun (Jira)]

hailong wang created FLINK-18714:
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             Summary: Support consuming multiple topics for KafkaTableSource
                 Key: FLINK-18714
                 URL: https://issues.apache.org/jira/browse/FLINK-18714
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / Planner
    Affects Versions: 1.11.0
            Reporter: hailong wang
             Fix For: 1.12.0


SQL  one kafka table only supports one topic by `{{'topic' = 'topic1'}}` or `{{'connector.topic' = 'topic1'}}`. 

We can support  consuming multiple topics in one kafka table.

My idea is that We can concatenate multi topic with comma just like,

`{{'topic' = 'topic1,topic2,topic3'}}`



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