suma de dos valores en campos de una misma tabla

[josuecasu]

me sigue saliendo ese error.... que sera....

Error

consulta SQL:

CREATE Trigger tg_suma_stock AFTER INSERT ON suministros

FOR each
ROW
BEGIN declare stock_actual int;

MySQL ha dicho: Documentación
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 4