mysql 存储过程临时表、多游标嵌套使用样例：

CREATE PROCEDURE method(IN start_Code varchar(10),IN end_Code varchar(10),in start_Airport varchar(255),in end_Airport varchar(255))

BEGIN

DECLARE out_done INT DEFAULT FALSE ; -- 外层游标控制变量

DECLARE e_done INT DEFAULT 0;

DECLARE s_province varchar(50);

DECLARE s_city varchar(100);

DECLARE s_county varchar(100);

DECLARE e_province varchar(50);

DECLARE e_city varchar(100);

DECLARE e_county varchar(100);

DECLARE delivery_type INT;

DECLARE delivery_type_cn varchar(10);

DECLARE delivery_type_num INT;

DECLARE delivery_num_one INT;

DECLARE result_tmp varchar(10);

DECLARE startlist CURSOR FOR

SELECT p,c,cou FROM conver WHERE code = start_Code;

DECLARE CONTINUE HANDLER FOR NOT FOUND SET out_done = TRUE ; -- 外层游标执行结束，置为TRUE

-- 创建临时表

create temporary table if not exists tmpTable(

id int primary key,

startport varchar(100),

startProvince varchar(100),

endport varchar(100),

endProvince varchar(100),

deliveryType varchar(10),

result varchar(10)

);

-- 清除临时表数据

truncate TABLE tmpTable;

OPEN startlist;

WHILE NOT out_done DO -- out WHILE

FETCH startlist INTO s_province,s_city,s_county;

IF NOT out_done THEN

BEGIN

DECLARE inner_done int DEFAULT FALSE ;

DECLARE endlist CURSOR FOR

select p,c,cou FROM conver where code = end_Code;

DECLARE CONTINUE HANDLER FOR NOT FOUND SET inner_done = TRUE ;

OPEN endlist;

WHILE NOT inner_done DO -- inner WHILE

FETCH endlist INTO e_province,e_city,e_county; -- 从【内层游标】中获取数据，赋值到定义变量中

IF NOT inner_done THEN

set delivery_type=1; -- 方式 1:自 2:送

WHILE delivery_type <=2 DO

IF delivery_type = 1 THEN

set delivery_type_cn = '自';

select COUNT(*) INTO delivery_type_num from user au where code = end_Code;

IF delivery_type_num > 0 THEN

set result_tmp = 'OK';

ELSE

set result_tmp = 'NO';

END IF;

ELSE

set delivery_type_cn = '送';

select count(*) into delivery_num_one from delivery where county = e_county;

IF delivery_num_one > 0 THEN

set result_tmp = 'OK';

ELSE

set result_tmp = 'NO';

END IF;

END IF;

set e_done =e_done+1;

insert into tmpTable values(e_done,start_Airport,s_province,end_Airport,e_province,delivery_type_cn,result_tmp);

set delivery_type=delivery_type+1;

END WHILE;

END IF; -- END inner IF

END WHILE ; -- END inner WHILE

CLOSE endlist;-- 这个语句关闭先前打开的光标。

END; -- END inner BEGIN

END IF; -- END out IF

END WHILE; -- END out WHILE

CLOSE startlist;-- 这个语句关闭先前打开的光标。

select * from tmpTable;

END;

调用过程：

set @start_Code='O';

set @end_Code='C';

set @start_Airport='机场';

set @end_Airport='国际机场';

call Method(@start_Code,@end_Code,@start_Airport,@end_Airport);