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* multiple primary keys and reference
@ 2002-06-07 20:00 Matt <matthew.berardi@weilpublishing.com>
2002-06-10 14:40 ` Re: multiple primary keys and reference Achilleus Mantzios <achill@matrix.gatewaynet.com>
2002-06-10 15:58 ` Re: multiple primary keys and reference Stephan Szabo <sszabo@megazone23.bigpanda.com>
0 siblings, 2 replies; 3+ messages in thread
From: Matt @ 2002-06-07 20:00 UTC (permalink / raw)
To: pgsql-sql
I have a table, OrderDetail, with two primary keys OrderID and ProductID
I want another table, Claims, to reference the primary keys of
OrderDetail so that the pair has to match between table not just one
attrib. I can't figure out how to do this from the docs I have. can
anyone help? thankyou in advance
matthew berardi
weil publishing
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: multiple primary keys and reference
2002-06-07 20:00 multiple primary keys and reference Matt <matthew.berardi@weilpublishing.com>
@ 2002-06-10 14:40 ` Achilleus Mantzios <achill@matrix.gatewaynet.com>
1 sibling, 0 replies; 3+ messages in thread
From: Achilleus Mantzios @ 2002-06-10 14:40 UTC (permalink / raw)
To: Matt <matthew.berardi@weilpublishing.com>; +Cc: pgsql-sql
CREATE TABLE Parts(
PartNo varchar(20) NOT NULL,
machtypesid int4 NOT NULL,
BestPrice decimal(100,2),
Comment text,
PRIMARY KEY (PartNo,machtypesid));
CREATE TABLE MachDefs(
defid serial NOT NULL UNIQUE PRIMARY KEY,
Description text,
PartNo varchar(20),
MachTypeID int4 NOT NULL,
FOREIGN KEY (PartNo,MachTypeID) REFERENCES Parts (PartNo,machtypesid));
--
Achilleus Mantzios
S/W Engineer
IT dept
Dynacom Tankers Mngmt
tel: +30-10-8981112
fax: +30-10-8981877
email: achill@matrix.gatewaynet.com
mantzios@softlab.ece.ntua.gr
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: multiple primary keys and reference
2002-06-07 20:00 multiple primary keys and reference Matt <matthew.berardi@weilpublishing.com>
@ 2002-06-10 15:58 ` Stephan Szabo <sszabo@megazone23.bigpanda.com>
1 sibling, 0 replies; 3+ messages in thread
From: Stephan Szabo @ 2002-06-10 15:58 UTC (permalink / raw)
To: Matt <matthew.berardi@weilpublishing.com>; +Cc: pgsql-sql
On Fri, 7 Jun 2002, Matt wrote:
> I have a table, OrderDetail, with two primary keys OrderID and ProductID
I assume you mean it has a primary key with two columns.
>
> I want another table, Claims, to reference the primary keys of
> OrderDetail so that the pair has to match between table not just one
> attrib. I can't figure out how to do this from the docs I have. can
> anyone help? thankyou in advance
If I understand what you want, use the table constraint form of foreign
keys:
create table a (a int, b int, primary key(a,b));
create table b (a int, b int, foreign key(a,b) references a);
^ permalink raw reply [nested|flat] 3+ messages in thread
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2002-06-07 20:00 multiple primary keys and reference Matt <matthew.berardi@weilpublishing.com>
2002-06-10 14:40 ` Achilleus Mantzios <achill@matrix.gatewaynet.com>
2002-06-10 15:58 ` Stephan Szabo <sszabo@megazone23.bigpanda.com>
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