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todd commented on FLINK-22318: ------------------------------ I think it should be done in two steps, the first step is to extend the SQL syntax, and the second step is to modify Schema#TableColumn#columnName. I'm not sure, PrimaryKey, RowtimeAttribute of Watermark, whether it is allowed to modify the column name. > Support RENAME column name for ALTER TABLE statement > ---------------------------------------------------- > > Key: FLINK-22318 > URL: https://issues.apache.org/jira/browse/FLINK-22318 > Project: Flink > Issue Type: Sub-task > Components: Table SQL / API > Reporter: Jark Wu > Priority: Major > -- This message was sent by Atlassian Jira (v8.3.4#803005)