mysql transaction error handling

问题

 DECLARE EXIT HANDLER FOR SQLEXCEPTION, SQLWARNING, NOT FOUND 
BEGIN 
    ROLLBACK; 
END;
START TRANSACTION;      

    UPDATE tbl_order SET TransactionID="abc" WHERE OrderID=1;
    UPDATE tbl_order SET TransactionID="xyz" WHERE OrderID=;
    UPDATE tbl_order SET TransactionID="zzz" WHERE OrderID=13;


COMMIT;

for some reason order 1 and 13 are filled without rollback and i get syntax error for the exit hadler.

Query:  DECLARE EXIT HANDLER FOR SQLEXCEPTION, SQLWARNING, NOT FOUND BEGIN ROLLBACK

Error Code: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DECLARE EXIT HANDLER FOR SQLEXCEPTION, SQLWARNING, NOT FOUND 
BEGIN 
    ROLLBACK' at line 1

can someone help me figure out what i'm doing wrong?

Thanks in advance

EDIT

UPDATE tbl_order SET TransactionID="xyz" WHERE OrderID=;

is intentional

回答1:

I believe exit handlers can only be used in stored procedures. The documentation doesn't explicitly state this, but alludes to

Conditions may arise during stored program execution that require special handling

http://dev.mysql.com/doc/refman/5.1/en/condition-handling.html

来源：https://stackoverflow.com/questions/9105533/mysql-transaction-error-handling