MySQL存储过程使用REPEAT来打开游标读取数据

无详细内容 游标 MySQL mysqlmysqlmysql delimiter $$mysql CREATE PROCEDURE myProc (in_customer_id INT) - BEGIN - - DECLARE l_first_name VARCHAR(30); - DECLARE l_id INT; - DECLARE l_city VARCHAR(30); - DECLARE l_department_count INT; - DECLARE

mysql>
mysql>
mysql> delimiter $$
mysql> CREATE PROCEDURE myProc (in_customer_id INT)
 -> BEGIN
 ->
 -> DECLARE l_first_name VARCHAR(30);
 -> DECLARE l_id INT;
 -> DECLARE l_city VARCHAR(30);
 -> DECLARE l_department_count INT;
 -> DECLARE no_more_departments INT;
 ->
 -> DECLARE dept_csr CURSOR FOR
 -> SELECT id,first_name, city
 -> FROM employee;
 ->
 -> DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_more_departments=1;
 ->
 -> SET no_more_departments=0;
 -> OPEN dept_csr;
 -> dept_loop:REPEAT
 -> FETCH dept_csr INTO l_id,l_first_name,l_city;
 -> IF no_more_departments=0 THEN
 -> SET l_department_count=l_department_count+1;
 -> END IF;
 -> select l_id,l_first_name,l_city;
 -> UNTIL no_more_departments
 -> END REPEAT dept_loop;
 -> CLOSE dept_csr;
 -> SET no_more_departments=0;
 ->
 ->
 -> END$$
Query OK, 0 rows affected (0.00 sec)