UPDATE

语法

UPDATE  table_reference
    SET assignment_list
    [WHERE where_condition]
    [ORDER BY ...]     

注意事项

执行UPDATE命令时，要求表中存在主键。

示例

将CUSTOMER表中customer_id ='2369'客户的姓名更改为黄蓉。

update customer set customer_name ='黄蓉' where customer_id ='2369';