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Mysql存儲過程循環(huán)內(nèi)嵌套使用游標(biāo)示例代碼

2024-07-24 13:06:05
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本節(jié)主要介紹了Mysql存儲過程循環(huán)內(nèi)如何嵌套使用游標(biāo),詳細實現(xiàn)如下,需要的朋友不要錯過
 
 
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(biāo),并將查詢結(jié)果存到游標(biāo)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(shù)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(wù) START TRANSACTION; -- 打開游標(biāo) OPEN c_borrow; -- 循環(huán)游標(biāo)  WHILE s1 < v_count+1 DO  -- 遍歷游標(biāo)  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(biāo)   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(wù)提交 END

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