AppraisalValueMapper.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="cn.wise.sc.cement.business.mapper.AppraisalValueMapper">

    <update id="update">
        update appraisal_value set appraisal_values = #{params}
    </update>

    <select id="getAppraisalValue" resultType="java.lang.Double">
        select av.appraisal_values as appraisalValues
        from appraisal_value av
    </select>

</mapper>