在MySQL的存储过程中，当查询到空结果集时会产生下面报错
Error 1329 No data - zero rows fetched, selected, or processed

解决方法：
在存储过程中，添加异常处理
注意代码中的橙色部分的异常代码


delimiter $$
CREATE PROCEDURE PROC_ADDSubscribers_diff()
BEGIN
DECLARE done INT DEFAULT FALSE;
DECLARE Var_IMSI_NODE2 varchar(16);
DECLARE Var_MSISDN_NODE2 varchar(19);
DECLARE Var_IMEI_NODE2 varchar(16);
DECLARE Var_Timestamp_NODE2 bigint(32);
DECLARE Var_IMSI_NODE1 varchar(16);
DECLARE Var_MSISDN_NODE1 varchar(19);
DECLARE Var_IMEI_NODE1 varchar(16);
DECLARE Var_Timestamp_NODE1 bigint(32);
DECLARE Var_sqlcode INT DEFAULT 0;
DECLARE cur1 CURSOR FOR select IMSI, MSISDN, IMEI, Timestamp from ADDSubscribers_node2;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
OPEN cur1;
read_loop: LOOP
FETCH cur1 INTO Var_IMSI_NODE2, Var_MSISDN_NODE2, Var_IMEI_NODE2, Var_Timestamp_NODE2;
IF done IS TRUE THEN
LEAVE read_loop;
END IF;
IF done IS FALSE THEN
IF (Var_IMSI_NODE2 is not null) THEN
BEGIN
DECLARE no_data CONDITION FOR 1329;
DECLARE CONTINUE HANDLER FOR no_data
BEGIN
SET Var_sqlcode=2000;
END;
select Timestamp, MSISDN, IMEI INTO Var_Timestamp_NODE1, Var_MSISDN_NODE1, Var_IMEI_NODE1 from dmcdbMTNGH.ADDSubscribers where IMSI = Var_IMSI_NODE2;
IF Var_sqlcode = 2000 THEN
start transaction;
INSERT INTO ADDSubscribers_diff SELECT * FROM ADDSubscribers_node2 WHERE IMSI = Var_IMSI_NODE2;
commit;
ELSEIF Var_sqlcode = 0 THEN
IF Var_Timestamp_NODE1 >= Var_Timestamp_NODE2 THEN
select concat('The data on node01 is newer!') as Info;
ELSE
IF (Var_MSISDN_NODE1 <> Var_MSISDN_NODE2) || (Var_IMEI_NODE1 <> Var_IMEI_NODE2) THEN
start transaction;
INSERT INTO ADDSubscribers_diff SELECT * FROM ADDSubscribers_node2 WHERE IMSI = Var_IMSI_NODE2;
commit;
END IF;
END IF;
END IF;
END;
END IF;
END IF;
END LOOP;
CLOSE cur1;
select concat('The job',' is ','finished!') as Info;
END$$
delimiter ;