一、更新表中的数据
update语句的基本语法
Update table_name
Set column1=value1,
column2=value2,
……
Where search_condition
二、删除表中的数据
delete语句的基本语法
Delete from table_name
Where search_condition
delete 删除所有行
Delete from table_name
Update table_name
Set column1=value1,
column2=value2,
……
Where search_condition
Delete from table_name
Where search_condition
Delete from table_name