inviscid commented on issue #5250: Add support for hosting superset DB in greenplum URL: https://github.com/apache/incubator-superset/issues/5250#issuecomment-398833350 One consideration might be to make the primary key a combination of database + schema + table/view with the ID column only serving as a reference. Since the ID column is auto incremented, it will always be unique without having to specify it directly. This way the ID column can be indexed for performance reasons but not have a unique constraint applied.
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