mysql for循环存储过程

DROP PROCEDURE IF EXISTS test_insert;

DELIMITER ;; 
CREATE PROCEDURE test_insert () 
BEGIN 

DECLARE i int;
set i=14;
WHILE i<30 
DO 
    insert into student(name,age,nianji,phone) values(CONCAT(\'hh\',i),CONCAT(i,\'\'),\'1\',\'123\');
SET i=i+1; 
END WHILE ; 
commit; 

END;; 

call test_insert () ;