Mysql存储过程循环内嵌套使用游标示例代码

数据运维 2023-04-24 大树 手机阅读

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

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 &gt;= v_addtime_begin AND ADDTIME &lt;= v_addtime_end AND (type = 'tender_cold' or type= 'repayment_deduct')
) t GROUP BY t.user_id HAVING count(t.user_id) &gt; 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