Обсуждение: Foreign keys

Hi All

I'm having a problem with Postgresql v. 7.2.
When I create a table and add a foreign key as a table constraint I get
a parse error, but when I add it as a column constraint it works.
This is what I've tried:

CREATE TABLE "alarm_schedule" (
   "alarm_schedule_id" SERIAL NOT NULL,
   "day_of_week" int2 NOT NULL,
   "user_id" int4 NOT NULL,
   "send_email" bool NOT NULL,
   "send_sms" bool NOT NULL,
   PRIMARY KEY ("alarm_schedule_id"),
   FOREIGN KEY "user_id" REFERENCES smartlight_user ("user_id")
);

I get this error:
2002-04-22 13:04:53 [21193]  ERROR:  parser: parse error at or near """
ERROR:  parser: parse error at or near """

But when I do this:

CREATE TABLE "alarm_schedule" (
   "alarm_schedule_id" SERIAL NOT NULL,
   "day_of_week" int2 NOT NULL,
   "user_id" int4 NOT NULL REFERENCES smartlight_user ("user_id"),
   "send_email" bool NOT NULL,
   "send_sms" bool NOT NULL,
   PRIMARY KEY ("alarm_schedule_id")
);

It works.

Any ideas?

Note:    If you receive this twice it's because I sent it to
pgsql-general@postgres.org first.
But it's been hours since I sent it so I figured I'd try
pgsql-general@postgresql.org instaed.


Best regards,
Jacob Vennervald Madsen
Systems Developer

GoPinocchio
Norrebrogade 45
DK-2200 Copenhagen
www.gopinocchio.com
+45 26750106

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Hi,

On Mon, 22 Apr 2002, Jacob Vennervald Madsen wrote:

> CREATE TABLE "alarm_schedule" (
>    "alarm_schedule_id" SERIAL NOT NULL,
>    "day_of_week" int2 NOT NULL,
>    "user_id" int4 NOT NULL,
>    "send_email" bool NOT NULL,
>    "send_sms" bool NOT NULL,
>    PRIMARY KEY ("alarm_schedule_id"),
>    FOREIGN KEY "user_id" REFERENCES smartlight_user ("user_id")
> );

This works:

CREATE TABLE "alarm_schedule" (
   "alarm_schedule_id" SERIAL NOT NULL,
   "day_of_week" int2 NOT NULL,
   "user_id" int4 NOT NULL,
   "send_email" bool NOT NULL,
   "send_sms" bool NOT NULL,
   PRIMARY KEY ("alarm_schedule_id"),
   FOREIGN KEY ("user_id") REFERENCES smartlight_user(user_id)
);


Just a parenthesis ;)

Best regards.

--

Devrim GUNDUZ

devrim@oper.metu.edu.tr
devrim.gunduz@linux.org.tr
devrimg@tr.net

Web : http://devrim.oper.metu.edu.tr
------------------------------------------------------------------

Devrim GUNDUZ <devrim@oper.metu.edu.tr> writes:
> Just a parenthesis ;)

Hmm, I wonder why the parse error message is so unhelpful?  If I write
the same example without double-quoting user_id, I get

    ERROR:  parser: parse error at or near "user_id"

which might at least offer a clue.

            regards, tom lane