The following bug has been logged online:

Bug reference: 1533
Logged by: Henk van den Toorn
Email address: vdtoorn (AT) hotmail (DOT) com
PostgreSQL version: 7.4.3-7
Operating system: Freebsd 5.3
Description: "*OLD*" relation not recognized in CREATE RULE
Details:

When creating a rule:

CREATE RULE rulename AS ON UPDATE
table WHERE OLD.index = NEW.index
DO INSTEAD NOTHING;

Postgresql responds with

ERROR: relation "*OLD*" does not exist

All kind of variations on "*OLD*"
like:

old.index; OLD.index; "*OLD*".index

do not work, nor does changing the order of the elements in the WHERE
clause.

---------------------------(end of broadcast)---------------------------
TIP 1: subscribe and unsubscribe commands go to majordomo (AT) postgresql (DOT) org

"Henk van den Toorn" <vdtoorn (AT) hotmail (DOT) com> writes:
Hm, works for me:

regression=# create table tab1 (index serial primary key, data text);
NOTICE: CREATE TABLE will create implicit sequence "tab1_index_seq" for "serial" column "tab1.index"
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "tab1_pkey" for table "tab1"
CREATE TABLE
regression=# create rule r as on update to tab1 where old.index = new.index do instead nothing;
CREATE RULE
regression=# select version();
version
---------------------------------------------------------------
PostgreSQL 7.4.7 on hppa-hp-hpux10.20, compiled by GCC 2.95.3
(1 row)

regards, tom lane

---------------------------(end of broadcast)---------------------------
TIP 1: subscribe and unsubscribe commands go to majordomo (AT) postgresql (DOT) org