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just wondering if this is possible? I see some older links stating this is not possible from 2015 or so but wondering if it is now and if there is any available documentation that states yay/nay. Thanks!
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It is not possible to queries across or JOIN logical databases created via the CREATE DATABASE command.
This is the same for PostgreSQL, on which Amazon Redshift was based. See: Joining Results from Two Separate Databases
While PostgreSQL has the
dlinkmodule that can join separate databases (on the same cluster or otherwise), this capability is not available for Amazon Redshift.