MySQL 存储过程空结果集错误Error 1329 No data 的异常处理

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

1. delimiter $$
   
2. CREATE PROCEDURE PROC_ADDSubscribers_diff()
3. BEGIN
4. DECLARE done INT DEFAULT FALSE;
5. DECLARE Var_IMSI_NODE2 varchar(16);
6. DECLARE Var_MSISDN_NODE2 varchar(19);
7. DECLARE Var_IMEI_NODE2 varchar(16);
8. DECLARE Var_Timestamp_NODE2 bigint(32);
9. DECLARE Var_IMSI_NODE1 varchar(16);
10. DECLARE Var_MSISDN_NODE1 varchar(19);
11. DECLARE Var_IMEI_NODE1 varchar(16);
12. DECLARE Var_Timestamp_NODE1 bigint(32);
13. DECLARE Var_sqlcode INT DEFAULT 0;
14. DECLARE cur1 CURSOR FOR select IMSI, MSISDN, IMEI, Timestamp from ADDSubscribers_node2;
15. DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
16.   OPEN cur1;
17.   read_loop: LOOP
18.   FETCH cur1 INTO Var_IMSI_NODE2, Var_MSISDN_NODE2, Var_IMEI_NODE2, Var_Timestamp_NODE2;
19.     IF done IS TRUE THEN
20.     LEAVE read_loop;
21.     END IF;
22.   IF done IS FALSE THEN
23.         IF (Var_IMSI_NODE2 is not null) THEN
24.         BEGIN
25.         DECLARE no_data CONDITION FOR 1329;
26.         DECLARE CONTINUE HANDLER FOR no_data
27.         BEGIN
28.         SET Var_sqlcode=2000;
29.         END;
30.         select Timestamp, MSISDN, IMEI INTO Var_Timestamp_NODE1, Var_MSISDN_NODE1, Var_IMEI_NODE1 from dmcdbMTNGH.ADDSubscribers where IMSI = Var_IMSI_NODE2;
31.             IF Var_sqlcode = 2000 THEN
32.                 start transaction;
33.                 INSERT INTO ADDSubscribers_diff SELECT * FROM ADDSubscribers_node2 WHERE IMSI = Var_IMSI_NODE2;
34.                 commit;
35.             ELSEIF Var_sqlcode = 0 THEN
36.                 IF Var_Timestamp_NODE1 >= Var_Timestamp_NODE2 THEN
37.                     select concat(‘The data on node01 is newer!’) as Info;
38.                 ELSE
39.                     IF (Var_MSISDN_NODE1 <> Var_MSISDN_NODE2) || (Var_IMEI_NODE1 <> Var_IMEI_NODE2) THEN
40.                     start transaction;
41.                     INSERT INTO ADDSubscribers_diff SELECT * FROM ADDSubscribers_node2 WHERE IMSI = Var_IMSI_NODE2;
42.                     commit;
43.                     END IF;
44.                 END IF;
45.             END IF;
46.         END;
47.         END IF;
48.   END IF;
49.   END LOOP;
50.   CLOSE cur1;
51.   select concat(‘The job’,‘ is ‘,‘finished!’) as Info;
52. END$$
53. delimiter ;