| From: | "Roderick A(dot) Anderson" <raanders(at)tincan(dot)org> |
|---|---|
| To: | Adam Fisher <black(at)cia(dot)com(dot)au> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: another foreign key question |
| Date: | 2001-12-19 06:09:31 |
| Message-ID: | Pine.LNX.4.10.10112182203010.13269-100000@tincan.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
On Wed, 19 Dec 2001, Adam Fisher wrote:
> alter table invhistory
> add constraint fk_invhist_invid_inventory
> foreign key ("invid") references "inventory" ("invid")
Wasn't there something about foreign keys having to be of the same data
type? (This pops to mind without doing a search of the archives) The
inventory table is using integer (INT4?) and the invhistory uses
NUMERIC(14,0). Seems a cast between types will be some extra overhead.
Isn't NUMERIC what was called BCD (binary coded decimal)
in-the-olden-days.
Rod
--
Let Accuracy Triumph Over Victory
Zetetic Institute
"David's Sling"
Marc Stiegler
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