Mysql存储过程循环内嵌套使用游标示例

Mysql存储过程循环内嵌套使用游标示例如下：

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，查询2014-05-27至2014-07-28发布的抵押标，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;

-- 创建临时资金记录日志标

DROP TABLE `rocky_accountlog_test`;

CREATE TABLE `rocky_accountlog_test` (

`ID` int(11) NOT NULL AUTO_INCREMENT COMMENT '主键ID',

`ACCOUNTLOG_ID` int(11) DEFAULT NULL,

`USER_ID` int(11) NOT NULL COMMENT '用户ID',

`TYPE` varchar(100) NOT NULL COMMENT '日志类型',

`TOTAL` double(20,8) NOT NULL DEFAULT '0.00000000' COMMENT '账户总额',

`MONEY` double(20,8) NOT NULL DEFAULT '0.00000000' COMMENT '操作金额',

`USE_MONEY` double(20,8) NOT NULL DEFAULT '0.00000000' COMMENT '可用余额',

`NO_USE_MONEY` double(20,8) NOT NULL DEFAULT '0.00000000' COMMENT '冻结金额',

`COLLECTION` double(20,8) NOT NULL DEFAULT '0.00000000' COMMENT '待收总额',

`TO_USER` int(11) NOT NULL DEFAULT '0' COMMENT '交易对方ID',

`REMARK` varchar(1000) DEFAULT NULL COMMENT '日志备注',

`ADDTIME` varchar(13) NOT NULL COMMENT '操作时间',

`ADDIP` varchar(64) DEFAULT NULL COMMENT '插入IP',

`FIRST_BORROW_USE_MONEY` double(20,8) DEFAULT NULL COMMENT '优先计划可用余额',

`BORROW_ID` int(11) DEFAULT NULL,

PRIMARY KEY (`ID`),

KEY `USER_ID_INDEX` (`USER_ID`) USING BTREE,

KEY `TO_USER_INDEX` (`TO_USER`) USING BTREE,

KEY `TYPE_INDEX` (`TYPE`) USING BTREE,

KEY `ADDTIME_INDEX` (`ADDTIME`) USING BTREE

) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COMMENT='账户历史记录测试表';

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;

-- 获取自动投标第一笔记录的时间

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;

-- 获取自动投标最后一笔记录的时间

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;

-- 声明游标，查询某个时间段内同一用户投标冻结或还款扣除记录数大于1条的资金记录信息，将查询结果保存到游标中

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;

-- 打开游标

OPEN c_accountlog;

-- 遍历游标

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

-- 将遍历的记录插入到rocky_accountlog_test表中

INSERT INTO rocky_accountlog_test (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