如何在mybatis xml文件中定义局部变量？

<bind name="name" value="value"/>

public class UserInfo {
    private Long id;
    private String gender;
    private String name;
    private Date createDate;
}

<select id="bindTest" resultMap="BaseResultMap">
    select
    <include refid="Base_Column_List" />
    from users
    <where>
        <choose>
            <when test="minId != null and minId > 0 and maxId != null and maxId > 0">
                and id between #{minId} and #{maxId}
            </when>
            <otherwise>
                <if test="minId != null and minId > 0">
                    and id &gt;= #{minId}
                </if>
            </otherwise>
        </choose>
        <if test="username != null and username.trim() != ''">
            and name like concat('%' , #{username} , '%')
        </if>
    </where>
</select>

@Test
public void testBind(){
    SqlSession sqlSession = sqlSessionFactory.openSession();
    UserInfoMapper userInfoMapper = sqlSession.getMapper(UserInfoMapper.class);
    List<UserInfo> userInfos = userInfoMapper.bindTest(1L , 10L, "0");
    System.out.println(userInfos);
}

sql=select Id, gender , name , create_date from users WHERE id between 1 and 10 and name like concat('%' , '0' , '%')

<select id="bindTest" resultMap="BaseResultMap">
   <bind name="minIdFlag" value="minId != null and minId > 0"/>
    <bind name="maxIdFlag" value="maxId != null and maxId > 0"/>
    <bind name="usernameLike" value="'%' + username + '%'"/>
    
    select
    <include refid="Base_Column_List" />
    from users
    <where>
        <choose>
            <when test="minIdFlag and maxIdFlag">
                and id between #{minId} and #{maxId}
            </when>
            <otherwise>
                <if test="minIdFlag">
                    and id &gt;= #{minId}
                </if>
            </otherwise>
        </choose>
        <if test="username != null and username.trim() != ''">
            and name like #{usernameLike}
        </if>
    </where>
</select>

sql=select Id, gender , name , create_date from users WHERE id between 1 and 10 and name like '%0%'