Shengkai Fang created FLINK-27263:
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Summary: Rename the metadata column to the user specified name in
DDL
Key: FLINK-27263
URL: https://issues.apache.org/jira/browse/FLINK-27263
Project: Flink
Issue Type: Improvement
Reporter: Shengkai Fang
Currently the source output the metadata column with the "$metadata"+ metadata
key as the column name. It's better that keep the name align with the user name
specified in the DDL,e.g. use event_time as the name if the user
specifies`event_time` TIMESTAMP(3) FROM 'timestamp'.
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