Re: One sequence for different tables

On Mon, 11 Mar 2002 Robert(dot)Farrugia(at)go(dot)com(dot)mt wrote:

> Is it possible to create one sequence to be used for more than one table ?
> Let's say I create a pkey_seq sequence.
> Can I use it in table A (pkey default nextval('pkey_seq') PRIMARY KEY) and
> in table B as (pkey default nextval('pkey_seq') PRIMARY KEY) ?

Yes.

> Is it safe in that each table will have unique values i.e. if I have a
> third table C which is used to link data both from A and B using the pkey
> field, will there be records having the same pkey but from different
> tables?

As long as you never insert an explicit value into the column and don't
have to roll over the sequence, you should be safe.