如何在mule中设置动态更新查询取决于负载输入
有时我们只需要更新1列，有时2列取决于输入。

CREATE TABLE customers  
( customer_id number(10) NOT NULL,  
  customer_name varchar2(50) NOT NULL,  
  city varchar2(50)  
);  

Sometimes

UPDATE CUSTOMERS SET
CUSTOMER_NAME = 'sri'
where CUSTOMER_ID = 5;

Sometimes

UPDATE CUSTOMERS SET
CUSTOMER_NAME = 'Ram'
city= 'Delhi'
where CUSTOMER_ID = 5;