Github user kaspersorensen commented on the issue:
https://github.com/apache/metamodel/pull/139
Yes but having two ways of doing it means that we can now also have "NOT
NOT_IN" (same as IN) and "NOT DIFFERENT_FROM" (same as EQUALS_TO) which to me
seems like we've done our design wrong. I agree that ideally we would then just
have the negation option, but that train has already left the station since we
have negations built in to DIFFERENT_FROM. I also wonder why you would want to
introduce NOT_IN if you really think we should be using the negation option
instead?
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