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from http://www.devshed.com/c/a/MySQL/Error-Handling-Examples/
Error Handler Examples
Here are some examples of handler declarations:
If any error condition arises (other than a NOT FOUND ), continue execution after setting l_error=1 :
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
SET l_error=1;
If any error condition arises (other than a NOT FOUND ), exit the current block or stored program after issuing a ROLLBACK statement and issuing an error message:
DECLARE EXIT HANDLER FOR SQLEXCEPTION
BEGIN
ROLLBACK;
SELECT 'Error occurred
