PAS/target/classes/mapper/QuestionRecordMapper.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.cslg.pas.mapper.QuestionRecordMapper">
    <!--根据任务id查询并统计失败专利数量-->
    <!--int selectDefaultNum(Integer taskId);-->
    <select id="selectDefaultNum" resultType="int">
        select count(distinct patent_no)
        from question_records
        where task_id = #{taskId}
    </select>


</mapper>