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List:       postgresql-general
Subject:    Re: [GENERAL] Sequences and inheritance
From:       Tom Lane <tgl () sss ! pgh ! pa ! us>
Date:       2001-07-31 14:53:28
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Bruce Richardson <brichardson@lineone.net> writes:
> If I have a set of tables and I set their primary keys all to the same 
> sequence, as in 
> ...
> Would this guarantee that each value of ID in any row of any of the 
> tables would be unique amongst all of them?

As long as the sequence doesn't wrap around, yes.

IIRC, you can set up a sequence to error out rather than wrap when
it hits the max...

			regards, tom lane

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