Small Procedure with Cursor for autocreate rows in tables (MYSQL) - mysql

Question

i created an event that execute one time per month. Three tables are important here, Cuota(fee), Alumno(studient) and CuotaxAlumno(fee per studient).
My objective is create a row in table Cuota(fee) one time per month and then with that fee create a payment row for every studient (in table CuotaxAlumno).
I having syntax error in te FETCH line, line 19, and i don't find the problem. i will appreciate the help.
IS WORKING NOW. CODE UPDATED 13-04-2017 Thanks!
DELIMITER $$
CREATE PROCEDURE crearCuotas()
BEGIN
DECLARE done INT DEFAULT FALSE;
DECLARE referenciaMonto INT;
DECLARE referenciaAlumno INT;
DECLARE referenciaCuota INT;
DECLARE fecha DATE;
DECLARE cursorAlumno CURSOR FOR SELECT idAlumno FROM alumno WHERE idEstado=1;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
SET referenciaMonto = (SELECT idMontoCuota FROM montocuota ORDER BY idMontoCuota DESC LIMIT 1);
SET fecha = CURDATE();
INSERT INTO cuota (idMontoCuota, fecha) VALUES(referenciaMonto, fecha);
SET referenciaCuota = (SELECT idCuota FROM cuota ORDER BY idCuota DESC LIMIT 1);
OPEN cursorAlumno;
fetch_loop: LOOP
FETCH cursorAlumno INTO referenciaAlumno;
IF done THEN
LEAVE fetch_loop;
END IF;
INSERT INTO cuotaxalumno(idAlumno, idCuota, idEstado) VALUES(referenciaAlumno, referenciaCuota, 5);
END LOOP;
CLOSE cursorAlumno;
END;
DELIMITER ;

Answer 1

You need to add a loop label:
CREATE PROCEDURE crearCuotas()
BEGIN
/* yada */
OPEN cursorAlumno;
fetch_loop: LOOP
FETCH cursorAlumno INTO referenciaAlumno;
IF done THEN
LEAVE fetch_loop;
END IF;
INSERT INTO cuotaxalumno (idAlumno, idCuota, idEstado)
VALUES (referenciaAlumno, referenciaCuota, 5);
END LOOP;
CLOSE cursorAlumno;
END;
This is because while the label is not required for creating a loop, it is required for the leave statement.