Thread: UPDATE Trigger on multiple tables

UPDATE Trigger on multiple tables

From

Ferindo Middleton Jr

Date:

13 October 2005, 01:28:21

Is it possible to have a single trigger on multiple tables 
simultaneously? Example:

CREATE TRIGGER emp_cust_stamp BEFORE INSERT OR UPDATE ON employees, customers   FOR EACH ROW EXECUTE PROCEDURE
last_updated_stamp();

I tried something like the above but get an error message at the comma. I tried using the keyword AND as well. 
I couldn't find anything on this in the docs. I have many different tables in my databases which all have a 
"last_updated" field and it seems less tedious to be able to enforce updating this trigger database-wide using 
just one trigger. Is it possible?

Ferindo

Re: UPDATE Trigger on multiple tables

From

Tom Lane

Date:

13 October 2005, 01:39:13

Ferindo Middleton Jr <fmiddleton@verizon.net> writes:
> Is it possible to have a single trigger on multiple tables 
> simultaneously? Example:

> CREATE TRIGGER emp_cust_stamp BEFORE INSERT OR UPDATE ON employees, customers
>     FOR EACH ROW EXECUTE PROCEDURE last_updated_stamp();

No.  You can use the same function for multiple triggers, but you have
to CREATE TRIGGER for each table separately.
        regards, tom lane

Re: UPDATE Trigger on multiple tables

From

Muralidharan Ramakrishnan

Date:

13 October 2005, 10:22:21

CREATE TRIGGER associates trigger function on a table and it is not possible to give more than one table seperated by comas.

CREATE TRIGGER emp_cust_stamp BEFORE INSERT OR UPDATE ON customers
FOR EACH ROW EXECUTE PROCEDURE last_updated_stamp();

CREATE TRIGGER emp_cust_stamp BEFORE INSERT OR UPDATE ON employees
FOR EACH ROW EXECUTE PROCEDURE last_updated_stamp();

Regards,

R.Muralidharan

Ferindo Middleton Jr <fmiddleton@verizon.net> wrote:

Is it possible to have a single trigger on multiple tables
simultaneously? Example:

CREATE TRIGGER emp_cust_stamp BEFORE INSERT OR UPDATE ON employees, customers
FOR EACH ROW EXECUTE PROCEDURE last_updated_stamp();

I tried something like the above but get an error message at the comma. I tried using the keyword AND as well.
I couldn't find anything on this in the docs. I have many different tables in my databases which all have a
"last_updated" field and it seems less tedious to be able to enforce updating this trigger database-wide using
just one trigger. Is it possible?

Ferindo

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