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Re: Problem with trigger
Posted by: Peter Brawley
Date: February 01, 2018 11:25AM

> CREATE TRIGGER Tpago BEFORE UPDATE on alumnos.deuda

Trigger must be defined on the table whose Update event fires it: ON alumnos

You need to re-read the manual page on Triggers.

> > UPDATE `alumnos` set `deuda` = OLD.deuda - NEW.deuda where `alumnos`.`a` = OLD.a;

Makes no sense. What, in plain English, do you want the Trigger to do?

Edited 1 time(s). Last edit at 02/01/2018 11:26AM by Peter Brawley.

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Written By
February 01, 2018 11:09AM
Re: Problem with trigger
February 01, 2018 11:25AM

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