Spring Boot+mybatis多表链接查询，重复外键

<resultMap id="recMap" type="com.winter.entity.work.RecruitEntity">
    <id column="rec_id" property="recId"/>
    <result column="rec_name" property="recName"/>
    <result column="rec_number" property="recNumber"/>
    <result column="education_id" property="educationId"/>
    <result column="rec_year" property="recYear"/>
    <result column="rec_describe" property="recDescribe"/>
    <result column="acceptance_of_disability" property="acceptanceOfDisability"/>
    <result column="contacts" property="contacts"/>
    <result column="contacts_number" property="contactsNumber"/>
    <result column="contacts_email" property="contactsEmail"/>
    <result column="pec_time" property="pecTime"/>
    <result column="detailed_address" property="detailedAddress"/>
    <association property="positionEntity" javaType="com.winter.entity.work.PositionEntity">
        <id column="pos_id" property="posId"/>
        <result column="pos_name" property="posName"/>
    </association>
    <association property="salaryEntity" javaType="com.winter.entity.work.SalaryEntity">
        <id column="sal_id" property="salId"/>
        <result column="sal_name" property="salName"/>
    </association>
    <association column="rec_province" property="recProvince" javaType="com.winter.entity.RegionEntity">
        <id column="reg_id" property="regId"/>
        <result column="reg_name" property="regName"/>
        <result column="pid" property="pid"/>
    </association>
    <association column="rec__city" property="recCity" javaType="com.winter.entity.RegionEntity">
        <id column="reg_id" property="regId"/>
        <result column="reg_name" property="regName"/>
        <result column="pid" property="pid"/>
        <result column="rec_type" property="recType"/>
    </association>
    <association column="rec_town" property="recTown" javaType="com.winter.entity.RegionEntity">
        <id column="reg_id" property="regId"/>
        <result column="reg_name" property="regName"/>
    </association>
    <association property="companyEntity" javaType="com.winter.entity.work.CompanyEntity">
        <id column="com_id" property="comId"/>
        <result column="com_name" property="comName"/>
    </association>
    <collection property="resumeEntities" ofType="com.winter.entity.work.ResumeEntity">
        <id column="res_id" property="resId"/>
        <result column="res_name" property="resName"/>
    </collection>
    <collection property="treatmentEntities" ofType="com.winter.entity.work.TreatmentEntity">
        <id column="tre_id" property="treId"/>
        <result column="tre_name" property="treName"/>
    </collection>
</resultMap>

<select id="queryRecAll" resultMap="recMap" parameterType="com.winter.util.ConditionUtil">
    select
        rec.*,
        pos.pos_id,
        pos.pos_name,
        sal.sal_id,
        sal.sal_name,
        reg1.reg_id,
        reg1.reg_name,
        reg2.reg_id,
        reg2.reg_name,
        reg3.reg_id,
        reg3.reg_name,
        com.com_id,
        com.com_name,
        res.res_id,
        res.title,
        tre.tre_id,
        tre.tre_name
    from cw_recruit rec
        left outer join cw_position as pos on pos.pos_id = rec.pos_id
        left outer join cw_salary as sal on sal.sal_id = rec.sal_id
        left outer join cw_region as reg1 on reg1.reg_id = rec.rec_province
        left outer join cw_region as reg2 on reg2.reg_id = rec.rec_city
        left outer join cw_region as reg3 on reg3.reg_id = rec.rec_town
        left outer join cw_company as com on com.com_id = rec.com_id
        left outer join cw_recres as rrs on rrs.rec_id = rec.rec_id
        left outer join cw_resume as res on res.res_id = rrs.res_id
        left outer join cw_rectre as rcs on rcs.rec_id = rec.rec_id
        left outer join cw_treatment as tre on tre.tre_id = rcs.tre_id
    limit #{begin}, #{pageSize}
</select>
结果如下：
RecruitEntity{
recId=1, 
recName='anme', 
positionEntity=PositionEntity{...}, 
resumeEntities=[], 
salaryEntity=SalaryEntity{...}, 
treatmentEntities=[TreatmentEntity{...}], 
recProvince=RegionEntity{regId=2, pid=0, regName='文城镇'}, 
recCity=RegionEntity{regId=2, pid=0, regName='文城镇'}, 
recTown=RegionEntity{regId=2, pid=0, regName='文城镇'}, 
}
其中三个重复数据，但是sql语句在数据库运行没有一点问题，不知哪位贤才能解答一二？？