Hey to all,
I got two tables, linked to each other. How can I tell the first CREATE TABLE
(institute_t) to wait to check the foreign key for the second table??? just
like "hold on a little bit... you'll receive your admin_t" :-) ? I thoght
DEFERRABLE, DEFERRED and transaction with BEGIN/COMMIT take care of this.
..or generally: how do you create two crosslinked foreign keyed tables?
hopefully an easy problem for the real professionals!
-----------------> here we go
BEGIN; -- begin table transaction -- Only Postgresql
CREATE TABLE institute_t (
name VARCHAR(48) PRIMARY KEY,
street VARCHAR(48) NOT NULL,
zip VARCHAR(16),
town VARCHAR(32) NOT NULL,
country CHAR(2) NOT NULL, /* country codes ISO-3166*/
phone VARCHAR(32) NOT NULL,
fax VARCHAR(32),
admin VARCHAR(16) REFERENCES admin_t
ON UPDATE CASCADE
ON DELETE SET NULL
DEFERRABLE
INITIALLY DEFERRED
);
CREATE TABLE admin_t (
login VARCHAR(16) PRIMARY KEY,
password VARCHAR(16) NOT NULL,
email VARCHAR(32) NOT NULL,
real_name VARCHAR(32) NOT NULL,
street VARCHAR(48) NOT NULL,
zip VARCHAR(16),
town VARCHAR(32) NOT NULL,
country CHAR(2) NOT NULL, /* country codes -- refer to
ISO-3166*/
phone VARCHAR(32) NOT NULL,
fax VARCHAR(32),
access INTEGER NOT NULL,
institute VARCHAR(48) REFERENCES institute_t
ON UPDATE CASCADE
ON DELETE SET NULL
DEFERRABLE
INITIALLY DEFERRED
);
COMMIT;
of course I get the ERROR, that admin_t doesn't exist. So? help the stupid!
pls!
best greets,
Chris
