down at the explanation of DEFERRABLE, that constraints are checked
after every command. Why does the following not work then:
CREATE TABLE foo (
pos INT UNIQUE
INSERT INTO foo (pos) VALUES (1);
INSERT INTO foo (pos) VALUES (2);
UPDATE foo SET pos = CASE WHEN pos = 2 THEN 1 ELSE 2 END;
ERROR: duplicate key violates unique constraint "foo_pos_key"
Also, are deferrable constraints other that FK constraints in the works?
I also noticed, that the docs don't state whether INITIALLY IMMEDIATE or
INITIALLY DEFERRED is the default.
Markus Bertheau <twanger(at)bluetwanger(dot)de>
pgsql-sql by date
|Next:||From: Markus Bertheau||Date: 2004-10-20 16:16:04|
|Subject: Re: time of constraint checking|
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|Subject: Re: the problem of createlang!|