From: | "A(dot) Kretschmer" <andreas(dot)kretschmer(at)schollglas(dot)com> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: Rule Error |
Date: | 2007-10-05 04:56:37 |
Message-ID: | 20071005045637.GA14452@a-kretschmer.de |
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Thread: | |
Lists: | pgsql-sql |
am Fri, dem 05.10.2007, um 7:16:06 +0800 mailte Hengky Lie folgendes:
> Yes, it works now ! Wow, the problem is in the field name. Changed it to
> lowercase solved the problem. Thank you to all ho give me this advice.
>
> But now I have another question regarding to this field, what command I can
> use in UPDATE RULE to make these 2 fields (KODEGL and NAMAREK) keep syncron
> between these 2 tables (tblmasdbt and tblmasgl) ?
As Richard suggested, use TRIGGER instead RULE, but okay.
A little example, i hope, it helps:
(2 little tables t1 and t2 and a UPDATE-RULE on t1 with a 'do also')
test=# create table t1 (id int, val int);
CREATE TABLE
test=*# create table t2 (id int, val int);
CREATE TABLE
test=*# create rule r1 as on update to t1 do also update t2 set val =
new.val where id=new.id;
CREATE RULE
test=*# commit;
COMMIT
test=# insert into t1 values (1,1);
INSERT 0 1
test=*# insert into t1 values (2,2);
INSERT 0 1
test=*# insert into t2 values (1,1);
INSERT 0 1
test=*# insert into t2 values (2,2);
INSERT 0 1
test=*# update t1 set val =10 where id=1;
UPDATE 1
test=*# select * from t2;
id | val
----+-----
2 | 2
1 | 10
(2 rows)
Andreas
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Andreas Kretschmer
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