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While I very much don't like Oracle as a company, I'm not aware there being other DB with something like flashback.

EDIT: Also, I'm not sure there's production ready free software column-store DB.



> I'm not aware there being other DB with something like flashback.

Postgresql had it long before Oracle, but it was dropped as being too much of a hassle to maintain somewhere in the 7->8 transition IIRC.


I haven't really found an open source vertica style columnar store either, and I find this mystifying.




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