Can a MySQL trigger be associated to more than one table or by all tables?

Question

I have created this trigger to insert a value calculated value to a field in the table in case the user forget to put the data himself:

DELIMITER //
CREATE T         


        

Answer 1

No. The syntax doesn't provide for it.

It makes no sense to allow it, because the NEW keyword must refer to a particular row definition. If you have two tables with the same row definition, they should be made into the one table, with another column denoting the difference.