lsyldliu commented on code in PR #19329:
URL: https://github.com/apache/flink/pull/19329#discussion_r845763835
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flink-table/flink-sql-parser/src/main/codegen/includes/parserImpls.ftl:
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@@ -548,6 +551,18 @@ SqlAlterTable SqlAlterTable() :
tableIdentifier,
newTableIdentifier);
}
+ |
+ <RENAME>
Review Comment:
About the syntax, we have a conclusion in issue [ALTER TABLE statement
enhancement](https://issues.apache.org/jira/browse/FLINK-21634), we don't use
COLUMN keyword. Moreover, COLUMN is optional in Spark.
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