huimv-deqing-huyang/huimv-huyang-admin/target/classes/mapper/BreedVaccinationRecordMapper.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.huimv.admin.mapper.BreedVaccinationRecordMapper">

    <select id="listScreen" resultType="com.huimv.admin.entity.vo.BreedVaccinationVo">
        select count(*) vaccinationCount,create_time createDate,medicine medicine from  breed_vaccination_record
        ${ew.customSqlSegment}
        group by medicine
    </select>
</mapper>