<!-- parameterType: parameter type, can be omitted,
Get the value of the auto-incrementing primary key:
mysql supports self-incrementing primary keys and the acquisition of self-incrementing primary key values. Mybatis also uses statement.getGeneratedKeys();
useGeneratedKeys = "true" ; use the auto-incrementing primary key to get the primary key value strategy
keyProperty; specifies the corresponding primary key property, that is, after mybatis obtains the primary key value, which property of javaBean encapsulates this value to
-->
<insert id="addEmp" parameterType="com.atguigu.mybatis.bean.Employee"
useGeneratedKeys="true" keyProperty="id" databaseId="mysql">
insert into tbl_employee(last_name,email,gender)
values(#{lastName},#{email},#{gender})
</insert>