I am trying to write a foreign key table constraint which references
another column from a table in another database from within
PostgreSQL.
Within the database 'rsg_auth', there is a table called 'user_table'
which has a column (amongst others) called 'username'.
In another database called 'browser perm' I am trying to create the
following:
CREATE TABLE user_agreement ( ua_name VARCHAR(16) NOT NULL, ua_desc TEXT NOT NULL, sat_name
VARCHAR(20) DEFAULT '', contract VARCHAR(30) DEFAULT '', filetype VARCHAR(30) NOT NULL,
areacode VARCHAR(30) NOT NULL, nrt CHAR NOT NULL DEFAULT 'N' CONSTRAINT chkcons_nrt_y_n CHECK
(nrt IN ('Y', 'N')), PRIMARY KEY (ua_name), CONSTRAINT fk_uaname_username FOREIGN KEY (ua_name)
REFERENCES rsg_auth.user_table(username) ON UPDATE CASCADE ON DELETE CASCADE
)
When I submitt it, I get the following error: ERROR: parser: parse error at or near "."
Obviously this has something to do with my reference to the other
table.
Can anyone put my syntax straight please?
Thanks in advance.
--
Mr. Daniel J. Smale
Remote Sensing Group
Plymouth Marine Laboratory