die() ferme la connexion http
exit() ne ferme pas la connexion.

Triggers can't modify a table already used by statement that invoked the trigger


A.5.9.


Can triggers access tables?


A trigger can access both old and new data in its own table. A trigger can also affect other tables, but it is not permitted to modify a table that is already being used (for reading or writing) by the statement that invoked the function or trigger.