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=;
WHILE i<
DO
    insert into student(name,age,nianji,phone) values(CONCAT('hh',i),CONCAT(i,''),'','');
SET i=i+;
END WHILE ;
commit; 

END;; 

call test_insert () ;