snd-escloud/target/classes/mapper/build/WaterFeeCompanyDao.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="platform.modules.build.dao.WaterFeeCompanyDao">

<select id="findWaterReadCompanyIdsByWaterFeeId" resultType="Integer">
    select water_read_company_id from y_water_fee_company where water_fee_id=#{water_fee_id}
</select>

    <delete id="deleteByFeeId">
        delete   from y_water_fee_company where water_fee_id=#{feeId}
    </delete>
</mapper>