From: | "Bert" <clemens(dot)bertschler(at)gmail(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | SQL Rule |
Date: | 2006-04-25 21:27:23 |
Message-ID: | 1146000443.806482.225410@y43g2000cwc.googlegroups.com |
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Thread: | |
Lists: | pgsql-general |
Hi list
I have a table construction like the one seen below, when i am updating
or inserting i get a recurion, logical. But how to manage it that the
rule is just doing it one time. Or is it possible to do the sum of a
and b in an other way?
CREATE TABLE test
(
a int2,
b int2,
c int2,
id int2 NOT NULL,
CONSTRAINT id_test PRIMARY KEY (id)
)
WITHOUT OIDS;
ALTER TABLE test OWNER TO postgres;
CREATE OR REPLACE RULE sum_op AS
ON INSERT TO test DO UPDATE test SET c = new.a + new.b
WHERE test.id = new.id;
CREATE OR REPLACE RULE sum_op_up AS
ON UPDATE TO test DO UPDATE test SET c = test.a + test.b
WHERE test.id = new.id;
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