wms/nflg-wms-repository/src/main/resources/mapper/WmsBomMapper.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.nflg.wms.repository.mapper.WmsBomMapper">

    <select id="getChildren" resultType="com.nflg.wms.repository.entity.WmsBom">
        SELECT b2.*
        FROM wms_bom b1
        INNER JOIN wms_bom b2 ON b2.parent_id=b1."id"
        WHERE b1."no"=#{materialNo}
    </select>
</mapper>