Bug for view with rules - Mailing list pgadmin-support

From Donald Fraser
Subject Bug for view with rules
Date
Msg-id 002e01c2aa8e$ae7227b0$2464a8c0@demolish1
Whole thread Raw
List pgadmin-support
Hi Dave,
thanks for the latest fix.
 
Have spent all morning creating the situation for a view that causes a crash - here it is...
 
First create a simple table such as:
 
CREATE
TABLE public.tbl_catchbug (
id int4,
s_sometext text
) WITHOUT OIDS;
GRANT
ALL ON TABLE public.tbl_catchbug TO PUBLIC;
GRANT
ALL ON TABLE public.tbl_catchbug TO postgres;
 
Next create a view for the table such as:
 
CREATE
VIEW public.vu_tbl_catchbug AS SELECT t.id, t.s_sometext FROM tbl_catchbug AS t;
GRANT
INSERT, SELECT, UPDATE ON TABLE public.vu_tbl_catchbug TO PUBLIC;
GRANT
ALL ON TABLE public.vu_tbl_catchbug TO postgres;
 
Next create a function in PL/SQL such as:
 
CREATE
FUNCTION raise_exception1(text) RETURNS int4 AS '
DECLARE s_message ALIAS FOR $1;
BEGIN
    RAISE EXCEPTION s_message;
    RETURN -1;
END; '
LANGUAGE 'plpgsql';
 
Next create the following rules for the view:
 
CREATE
RULE rul_vu_tbl_catchbug_i1 AS ON INSERT TO vu_tbl_catchbug WHERE (id IS NULL AND s_sometext IS NULL) DO (SELECT raise_exception1('You must supply some data'));
CREATE
RULE rul_vu_tbl_catchbug_i2 AS ON INSERT TO vu_tbl_catchbug WHERE (id IS NULL) DO (INSERT INTO tbl_catchbug (id, s_sometext) VALUES('1', NEW.s_sometext));
CREATE
RULE rul_vu_tbl_catchbug_i3 AS ON INSERT TO vu_tbl_catchbug WHERE (id IS NOT NULL) DO (SELECT raise_exception1('This is an exception'));
CREATE
RULE rul_vu_tbl_catchbug_i4 AS ON INSERT TO vu_tbl_catchbug DO INSTEAD NOTHING;
 
Finally do an insert into the view with the following SQL statement:
 
INSERT INTO vu_tbl_catchbug (s_sometext) VALUES('This should crash pgAdminII');
 
That should do the trick...
 
I'm off for the rest of the festive season (back to work on the 2nd),
hope you have a good one too,
regards,
Donald.
 

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