machinery-service/src/main/resources/mapper/SysRoleMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yunzhi.nanyang.mapper.SysRoleMapper">

    <select id="getPageBy" resultType="com.yunzhi.nanyang.entity.SysRole">
        SELECT
            t.*
        FROM
            sys_role t
                <if test="isAdmin">
                    INNER JOIN sys_user_role s ON s.role_id = t.role_id AND s.user_id = #{userId}
                </if>
        WHERE 1=1
            <if test="name != null and name != ''">
                t.`name` like concat('%', #{name}, '%')
            </if>
        ORDER BY
            t.create_date DESC
    </select>
</mapper>