1193 error when creating a mysql stored procedure - mysql

Question

I am trying to create this procedure but there is an error that I cannot solved. It gives me
error 1193 Unknown system variable p_salida.
I have looked at other topics here, but I find nothing that is useful to me.
Thanks!
bloque: BEGIN
-- PK / UK
DECLARE EXIT HANDLER FOR 1062
BEGIN
ROLLBACK;
SET p_salida=-5;
END;
-- FK
DECLARE EXIT HANDLER FOR 1452
BEGIN
ROLLBACK;
SET p_salida=-6;
END;
DECLARE v_Direccion int;
DECLARE v_CodUsuario int;
If not EXISTS (SELECT * From usuarios where Nombre = p_nombre and Apellido
= p_Apellido and Correo = p_correo and Contrasena=p_contrasena) THEN
-- SET p_salida = -1;
LEAVE bloque;
END IF;
SELECT codDireccion into v_Direccion
From direcciones
Order by codDireccion
DESC LIMIT 1;
SET v_Direccion = v_Direccion + 1;
SELECT codUsuario into v_CodUsuario
From usuarios
Order by codusuario
DESC LIMIT 1;
SET v_CodUsuario = v_CodUsuario + 1;
START TRANSACTION;
INSERT Into direcciones (CodDireccion, CodigoPostal, Domicilio, Localidad,
Provincia)
VALUES (v_Direccion, p_CodPostal,
p_Domicilio,p_Localidad,p_Provincia);
INSERT into Usuarios (Apellido, CodUsuario, Contrasena, Correo,
Direccion,FechaNacimiento, nombre)
VALUES (p_Apellido, v_CodUsuario, p_Contrasena, p_Correo, v_Direccion,
p_FechaNacimiento,p_nombre);
COMMIT;
SET p_salida = 1;
END bloque

Answer 1

You have to declare your variable before you can use it. Something like this, placed just after your begin statement (or at least some time before you try to use the variable):
DECLARE p_salida INT DEFAULT 1;
Documentation: https://dev.mysql.com/doc/refman/8.0/en/declare-local-variable.html