Re: Updates thru view

"Rajshekar" <riyer@kc.rr.com> writes:
> create rule rule_update AS on update to shek_view
>         where old.age = 24
>         do  update shek_tab set age = new.age where old.age = 24 ;

Try

create rule rule_update AS on update to shek_view
        where old.age = 24
        do  update shek_tab set age = new.age where age = old.age;

Your form of the rule reduces to
    update shek_tab set age = new.age where true;
which unsurprisingly updates all rows of the table.

I do not exactly see the point of the conditional rule, either.
Why not just

create rule rule_update AS on update to shek_view
        do  update shek_tab set age = new.age where age = old.age;

The view already restricts visibility of rows, you do not need to
do it twice more in the rules.

            regards, tom lane