mysql> mysql> delimiter $$ mysql> mysql> CREATE PROCEDURE myProc( -> in_from INTEGER, -> in_to INTEGER, -> in_amount DECIMAL(8,2)) -> BEGIN -> -> DECLARE txn_error INTEGER DEFAULT 0 ; -> -> DECLARE CONTINUE HANDLER FOR SQLEXCEPTION BEGIN -> SET txn_error=1; -> END; -> -> SAVEPOINT savepoint_tfer; -> -> UPDATE employee -> SET salary=in_amount -> WHERE id=in_from; -> -> IF txn_error THEN -> ROLLBACK TO savepoint_tfer; -> SELECT 'Transfer aborted '; -> ELSE -> UPDATE employee -> SET salary=in_amount -> WHERE id=in_to; -> -> IF txn_error THEN -> ROLLBACK TO savepoint_tfer; -> SELECT 'Transfer aborted '; -> END IF; -> END IF; -> -> END$$ Query OK, 0 rows affected (0.00 sec) (责任编辑:IT) |