<?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.ltgk.port.mapper.DsTownStreetMapper">
    <select id="selectStreets" resultType="java.lang.String">
        SELECT id
        FROM ds_town_street
        WHERE id = #{streetId}
        OR parent_id = #{streetId}
    </select>
</mapper>