twalthr commented on issue #7289: [FLINK-11001][table] Fix window rowtime attribute can't be renamed bug in Java URL: https://github.com/apache/flink/pull/7289#issuecomment-451459198 @hequn8128 thanks for mentioning the `StreamTableEnvironmentValidationTest.testInvalidAliasWithProctimeAttribute()` test. The test is still correct. It should not be possible to alias a field that does not exist. However, after `.proctime` the field does somehow exist so aliasing is fine in this case. The only thing I will fix in a hotfix is the exception message, because it has not been updated.
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