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Re: New DBs from existing schemas

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Nishad Prakash wrote:
I want to create a new database with the exact schema of an existing one,
but a different name.  After some reading, it seems

pg_dump -s old_db > old_schema

That will dump all schemas from that db. If you only want a particular schema, use '-n'.

createdb -t old_schema new_db

There is no '-t' at least in 8.1.1..

'-T' on the other hand lets you specify an existing db and it will use that as a base instead of template1.

should work.  Will it?  Note that old_db has lots of stored functions and
user-defined operators in addition to tables and indices.

You could just use the first database as a template (using '-T') for the second one and that will copy everything across but that includes your data.

Also, is there any way to selectively restore some of the data from old_db
into new_db as well?  I'll settle for all data if selectivity isn't
possible.  Here, I don't have any good guesses, as the docs for pg_restore
don't say anything specific about restoring into a db other than the one
dumped from.

You can dump particular tables only but you don't get anything more selective.

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