Mysql存儲過程循環內嵌套使用游標示例代碼

2024-07-24 12:46:58

字體：大中小

來源：轉載

供稿：網友

上一篇：SELinux導致PHP連接MySQL異常Can't connect to MySQL server的解決方法

BEGIN -- 聲明變量 DECLARE v_addtime_begin varchar(13); DECLARE v_addtime_end varchar(13); DECLARE v_borrow_id int; DECLARE v_count int; DECLARE s1 int; /** 聲明游標，并將查詢結果存到游標中 **/ 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; /** 獲取查詢數量 **/ 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; -- 開始事務 START TRANSACTION; -- 打開游標 OPEN c_borrow; -- 循環游標 WHILE s1 < v_count+1 DO -- 遍歷游標 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 -- 嵌套使用游標 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; -- 事務提交 END

發表評論

共有條評論