service/src/main/resources/mapper/TaCheckAnswerItemMapper.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.example.civilizedcity.mapper.TaCheckAnswerItemMapper">

    <select id="getListBy" resultType="com.example.civilizedcity.entity.TaCheckAnswerItem">
        SELECT
            *
        FROM
            ta_check_answer_item t
        WHERE
            t.answer_id = #{answerId}
          AND t.`status` &gt; -1
    </select>
    <select id="getCountByAnswer" resultType="java.lang.Integer">
        SELECT
            count(*)
        FROM
            ta_check_answer_item t
        WHERE
            t.answer_id = #{answerId}
          AND t.`status` &gt; -1
    </select>
</mapper>