Re: views and rules

On Tue, 9 Jul 2002 12:01:56 -0600
"Chad Thompson" <chad@weblinkservices.com> wrote:

> --this is what he submits to me
> insert into call_results (phonenum, callnum, calldate, start_time)
> values ('5552552555', 4524, '6/24/2002', '17:00:32')
>
> To get around this i have tried to create the following.
>
> CREATE TABLE "call_results_fixed" (
> "id" int8 DEFAULT nextval('"call_results_fixed_id_seq"'::text) NOT NULL,
> "callnum" int4,
> "calldate" timestamp,
> "phonenum" varchar(15),
> "start_time" timestamp
> CONSTRAINT "call_results_fixed_pkey" PRIMARY KEY ("id")
> ) WITH OIDS;
>
> CREATE VIEW "call_results" AS SELECT * from call_results_fixed


It appears that the types of the columns defined as a view are different
from those of the values inserted into it.  I think it is probably a useful way
to explicitly cast like the following.

  CREATE VIEW call_results AS
       SELECT phonenum, callnum, calldate, start_time::text
          FROM call_results_fixed;


>
> CREATE RULE ins_call_results AS ON INSERT TO call_results
> DO INSTEAD INSERT INTO call_results_fixed (calldate, callnum, phonenum, start_time)
> VALUES ("timestamp"(new.calldate), new.callnum, new.phonenum, "timestamp"(((to_char(timestamptz(new.calldate),
'MM-DD-YYYY'::text)|| ' '::text) || text(new.start_time)))); 
>
> This would effectivly concatinate the date and time and insert them into the call_results_fixed table. (or so it
wouldseem) 
>
> I get an error when i set this up, however that says
>
> "Bad timestamp external representation '17:00:32'
>
> In other words, it seems that it is testing the column type without taking into account the rule.
>



Regards,
Masaru Sugawara