MySQL cursor游標close語句

• Cursor close語句用來關閉之前打開的游標
• 如果關閉一個未打開的游標，則MySQL會報錯
• 如果在存儲過程和函數中未使用此語句關閉已經打開的游標，則游標會在聲明的begin…end語句塊執行完之后自動關閉

delimiter //
CREATE PROCEDURE curdemo2()
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,dept_id FROM teacher;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = false;
open cur1;
fetch cur1 into v_id,v_name,v_dept_id;
while done do
select v_id,v_name,v_dept_id;
select 'row-----------' abc;
fetch cur1 into v_id,v_name,v_dept_id;
end while;
close cur1;
end;
//
delimiter ;