<?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.yiboshi.science.dao.ComExpertBatchDAO"> <sql id="allColumns"> t.id as id, t.expert_id as expertId, t.spec_id as specId, t.created as created, t.updated as updated </sql> </mapper>