Mysql存储过程循环内嵌套使用游标示例代码

数据库  /  管理员 发布于 6年前   261

BEGIN -- 声明变量 DECLARE v_addtime_begin varchar(13); DECLARE v_addtime_end varchar(13); DECLARE v_borrow_id int; DECLARE v_count int; DECLARE s1 int;  /** 声明游标，并将查询结果存到游标中 **/ DECLARE c_borrow CURSOR FOR SELECT ID from rocky_borrow WHERE BORROWTYPE = 2 AND PUBLISH_TIME >= UNIX_TIMESTAMP('2014-05-27') AND PUBLISH_TIME <= UNIX_TIMESTAMP('2014-07-30') ORDER by ID ASC; /** 获取查询数量 **/ SELECT count(ID) INTO v_count from rocky_borrow WHERE BORROWTYPE = 2 AND PUBLISH_TIME >= UNIX_TIMESTAMP('2014-05-27') AND PUBLISH_TIME <= UNIX_TIMESTAMP('2014-07-30') ORDER by ID ASC; SET s1 = 1; -- 开始事务 START TRANSACTION; -- 打开游标 OPEN c_borrow; -- 循环游标  WHILE s1 < v_count+1 DO  -- 遍历游标  FETCH c_borrow INTO v_borrow_id;  SELECT t1.addtime INTO v_addtime_begin FROM (SELECT * FROM rocky_b_tenderrecord bt WHERE BORROW_ID = v_borrow_id AND tender_type = 1 ORDER BY ID ASC) t1 GROUP BY t1.borrow_id;  SELECT t1.addtime INTO v_addtime_end FROM (SELECT * FROM rocky_b_tenderrecord bt WHERE BORROW_ID = v_borrow_id AND tender_type = 1 ORDER BY ID DESC) t1 GROUP BY t1.borrow_id;  IF (v_addtime_begin IS NOT NULL) && (v_addtime_end IS NOT NULL) THEN   -- 嵌套使用游标   BEGIN    DECLARE v_id int;    DECLARE v_user_id int;    DECLARE v_type varchar(20);    DECLARE v_total decimal(20,8) DEFAULT 0;    DECLARE v_money decimal(20,8) DEFAULT 0;    DECLARE v_use_money decimal(20,8) DEFAULT 0;    DECLARE v_no_use_money decimal(20,8) DEFAULT 0;    DECLARE v_collection decimal(20,8) DEFAULT 0;    DECLARE v_to_user int(11);    DECLARE v_remark VARCHAR(1000);    DECLARE v_addtime varchar(13);    DECLARE v_addip varchar(64);    DECLARE v_first_borrow_use_money decimal(20,8) DEFAULT 0;    DECLARE done VARCHAR(45) DEFAULT '';    DECLARE t_error int DEFAULT 0;      DECLARE c_accountlog CURSOR FOR    SELECT ID,USER_ID,TYPE,TOTAL,MONEY,USE_MONEY,NO_USE_MONEY,COLLECTION,TO_USER,REMARK,ADDTIME,ADDIP,FIRST_BORROW_USE_MONEY FROM (    SELECT ID,USER_ID,TYPE,TOTAL,MONEY,USE_MONEY,NO_USE_MONEY,COLLECTION,TO_USER,REMARK,ADDTIME,ADDIP,FIRST_BORROW_USE_MONEY FROM rocky_accountlog    WHERE ADDTIME >= v_addtime_begin AND ADDTIME <= v_addtime_end AND (type = 'tender_cold' or type= 'repayment_deduct')    ) t GROUP BY t.user_id HAVING count(t.user_id) > 1;        DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = NULL;    OPEN c_accountlog;    FETCH c_accountlog INTO v_id,v_user_id,v_type,v_total,v_money,v_use_money,v_no_use_money,v_collection,v_to_user,v_remark,v_addtime,v_addip,v_first_borrow_use_money;    WHILE (done IS NOT NULL) DO     INSERT INTO rocky_accountlog_test2 (ACCOUNTLOG_ID,USER_ID,TYPE,TOTAL,MONEY,USE_MONEY,NO_USE_MONEY,COLLECTION,TO_USER,REMARK,ADDTIME,ADDIP,FIRST_BORROW_USE_MONEY,BORROW_ID)     VALUES (v_id,v_user_id,v_type,v_total,v_money,v_use_money,v_no_use_money,v_collection,v_to_user,v_remark,v_addtime,v_addip,v_first_borrow_use_money,v_borrow_id);     FETCH c_accountlog INTO v_id,v_user_id,v_type,v_total,v_money,v_use_money,v_no_use_money,v_collection,v_to_user,v_remark,v_addtime,v_addip,v_first_borrow_use_money;    END WHILE;    CLOSE c_accountlog;   END;  END IF;  SET s1 = s1 + 1; END WHILE; CLOSE c_borrow; COMMIT; -- 事务提交 END