Re: Need help on triggers - postgres 9.1.2

On 05/21/2014 02:54 AM, Khangelani Gama wrote:
> Hi
>
> I have a postgres 9 database, inside this database I need to create a
> new table called *center_changed* that gets inserted by any change that
> take place in a table called *center*. So I need to create trigger to do
> this.
>
> *Example: *
>
> Table name*: center*(c_cde, c_dsc, ops_cde, grp_cde);
>
> Now on the table called *center , *I need to create an INSERT and UPDATE
> trigger will insert the *c_cde * of the inserted or updated *center*
> into the *center_changed* table
>
> Please help me
>
> I have this syntax below, but please help me with the overall query.
>
> CREATE TRIGGER check_center
>
>                 BEFORE INSERT OR UPDATE
>
>                 ON *cente*r FOR EACH ROW
>
>                 EXECUTE PROCEDURE check_center_changes();

See here:

http://www.postgresql.org/docs/9.3/interactive/plpgsql-trigger.html

Example 40-4. A PL/pgSQL Trigger Procedure For Auditing

>
> Thanks
>

--
Adrian Klaver
adrian.klaver@aklaver.com