MySQL cursor游标declare语句

• Cursor declare语句用来声明一个游标和指定游标对应的数据集合，通常数据集合是一个select语句
• Select_statement代表一个select语句 

mysql> SELECT id,name FROM teacher where id>=2;
+----+---------+
| id | name    |
+----+---------+
|  2 | Li si   |
|  3 | Wang wu |
|  4 | Liu liu |
|  5 | Ding qi |
+----+---------+
4 rows in set (0.00 sec)

delimiter //
CREATE PROCEDURE curdemo()
BEGIN
DECLARE done INT DEFAULT true;
DECLARE v_name varchar(64);
DECLARE v_id int; 
DECLARE v_dept_id int;
DECLARE cur1 CURSOR FOR SELECT id,name FROM teacher where id>=2;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = false;
open cur1;
while done do
fetch cur1 into v_id,v_name;
select v_id,v_name;
select 'row-----------' abc;
end while;
end;
//
delimiter ;