MySQL——循环（双重循环）

-- 函数

-- 设置好时区
set time_zone = '+8:00';
-- 开启事件调度器
set GLOBAL event_scheduler = 1;
 
drop event if exists commission_ms_ever_month; 
 
# 设置分隔符为 '$$' 
DELIMITER $$ 

create event commission_ms_ever_month  
on schedule every 1 MONTH  starts '2018-07-01 03:00:00'
do 
begin 
        CALL proc_commission_ms();
end $$ 
# 将语句分割符设置回 ';' 
DELIMITER ; 




DROP PROCEDURE IF EXISTS proc_commission_ms;
CREATE PROCEDURE proc_commission_ms()  
BEGIN  
-- 一、下户就有提成，但订单状态为拒单或者放款时才加入计算
-- 二、以填写面审信息流程的第一次提交帐号为提成归属人
-- 三、以主管审核（风控助理操做）流程的第一次提交时间做为下户时间；(因此要有终审节点)
-- 四、下户时间与拒单时间，下户时间与放款时间不能跨3个月；
-- ！！！ v_select_mytask_txmsxx 填写面试信息 v_select_mytask_zgsh主管审核 v_select_mytask_zs终审 v_order_reject拒单 v_task_loaned已放款
    
    -- 定义变量 (变量名称不能和select 接收别名同样)
    DECLARE txTime1 datetime;  
    DECLARE orderCode1 CHAR(100);  
    DECLARE receiveId1 int(11);  
    DECLARE receiveName1 CHAR(100);
    DECLARE xhTime1 datetime;
    DECLARE submitRole1 CHAR(255);
        
    DECLARE orderCode2 CHAR(100); 
    DECLARE doneTime2 CHAR(100);
    -- 定义结束标识 并绑定游标
    DECLARE done INT DEFAULT FALSE;
    DECLARE edone INT DEFAULT FALSE; 
    -- 定义游标01 --- 没有3个月限制的数据 以及结束标识
    DECLARE _outerForEach CURSOR FOR  
            SELECT
                MIN(tx.finish_time) AS txTime,
                tx.order_code AS orderCode,
                tx.receive_id AS receiveId,
                tx.receive_name AS receiveName,
                MIN(sh.finish_time) AS xhTime,
                tx.submit_role AS submitRole
            FROM
                v_mytask_txmsxx tx,
                v_mytask_zgsh sh
            WHERE
                tx.order_code = sh.order_code
            AND tx.order_code in(SELECT order_code FROM v_mytask_zs)
            AND 
                tx.order_code IN (
                    SELECT order_code FROM v_order_lastmonth_reject_loaned -- 上个月产生的新拒单+放款
                )
            GROUP BY
                tx.order_code;
        DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;-- 结束标识
    
        # 打开游标1 
    OPEN _outerForEach;  
         read_loop: LOOP  -- 循环游标开始,
            FETCH _outerForEach INTO txTime1, orderCode1, receiveId1, receiveName1, xhTime1, submitRole1;
                        IF done THEN
                            LEAVE read_loop;#跳出循环
                        END IF;
                         BEGIN
                             # 定义游标02 --- 已放款的和拒单的单子 --并 排除已经进入面审提成库的单子
                            DECLARE _innerForEach CURSOR FOR  
                                     SELECT order_code as orderCode,finish_time AS doneTime FROM v_order_reject 
                                    WHERE order_code not in(SELECT order_code FROM commission_inquiry_collection WHERE type = 1)
                                     UNION ALL 
                                     SELECT orderCode as orderCode,finishTime AS doneTime FROM v_task_loaned
                                    WHERE orderCode not in(SELECT order_code FROM commission_inquiry_collection WHERE type = 1);  
                             DECLARE CONTINUE HANDLER FOR NOT FOUND SET edone = 1;#结束标识
                             # 打开游标2 
                             OPEN _innerForEach;
                                 inner_loop: LOOP
                                     FETCH _innerForEach INTO orderCode2,doneTime2;
                                         IF edone THEN
                                             LEAVE inner_loop;
                                         ELSE
                                        #(处理业务)订单号一致，并且时间差3个月之内，插入统计表
                                              IF (orderCode2 = orderCode1 AND xhTime1 IS NOT NULL AND doneTime2 IS NOT NULL AND TIMESTAMPDIFF(MONTH,xhTime1,doneTime2) <= 3) THEN 
                                                 INSERT INTO `commission_inquiry_collection` (
                                                     `user_id`,
                                                     `order_code`,
                                                     `execute_time`,
                                                     `task_code`,
                                                     `count_time`,
                                                    `commission_time`,
                                                     `type`,
                                                     `submit_role`,
                                                     `city`,
                                                     `ext3`
                                                 ) VALUES (receiveId1,orderCode1,xhTime1,"T_TXMSXX_0002",NOW(),DATE_SUB(CURDATE(),INTERVAL 1 MONTH),'1',submitRole1,NULL,NULL);
                                              END IF;
                                     END IF;
                                 END LOOP;
                             CLOSE _innerForEach;-- 关闭内层游标
                            SET edone = FALSE;-- 内循环复位 以便再次循环
                         END;
            END LOOP; -- 结束循环
    CLOSE _outerForEach;-- 关闭游标
     COMMIT;
END;