Thread: insert into view !!

it is possible to insert into a view ?

thanks

On Wed, 23 Jun 1999, abdelkrim wrote:

> it is possible to insert into a view ?

if its a single-table view, yes -- you'd want to create a DO INSTEAD rule.
consult the manual/html pages to get the proper syntax for CREATE RULE.

if its a multitable view, maybe... i dont think this can be done with a
single rule, however.  you'll most likely need to implement a pl/pgsql or
pl/tcl function.

---
Howie <caffeine@toodarkpark.org>   URL: http://www.toodarkpark.org
"The distance between insanity and genius is measured only by success."

Try this script:

create table emp (
     empno    int,
     ename    char(10),
     jobchar(12),
     hiredate date,
     saldecimal(10,2),
     commint,
     deptno   int,
     nivel    int,
     mgrint
);

create view vista
     as select empno, ename, job
     from emp
     where job='SALESMAN';

create function view_upd() returns opaque as '
begin
        if tg_op = ''INSERT'' then
            if new.job = ''SALESMAN'' then
               INSERT INTO emp VALUES (new.empno,new.ename,new.job);
                return new;
            else
                raise notice ''impossible to add records where JOB is
not "SALES
                return null;
            end if;
        end if;
end;
' language 'plpgsql';

create trigger t_add before insert
    on vista for each row execute procedure view_upd();


abdelkrim ha scritto:

> it is possible to insert into a view ?
>
> thanks

--
______________________________________________________________
PostgreSQL 6.5.0 on i586-pc-linux-gnu, compiled by gcc 2.7.2.3
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Jose'