在数据库的Sql语句能查询出多条，但在mybatis只返回一条，语句相同

Question

具体代码如下：

sql：

SELECT aid,acontent,adate,like_count,ui.uid AS uid,wid,nickname,portrait,
        (SELECT COUNT(1) FROM bug_answer WHERE FIND_IN_SET(aid,get_answerSon_list(11)) AND wid != 0) AS `count`
        FROM bug_answer ba JOIN user_info ui ON ba.uid = ui.uid WHERE bid = 11 AND wid = 0

==此时是能查询出多条的==

mybatis

<!-- 查询指定Bug文章下的回答集合 -->
    <select id="findAllBugAnswerByBid" resultMap="findAllBugAnswerMap">
        SELECT aid as aid,acontent,adate,like_count,ui.uid AS uid,wid,nickname,portrait,
        (SELECT COUNT(1) FROM bug_answer WHERE FIND_IN_SET(aid,get_answerSon_list(ba.aid)) AND wid != 0) AS `count`
        FROM bug_answer ba JOIN user_info ui ON ba.uid = ui.uid WHERE bid = #{bid} AND wid = #{wid}
    </select>

mybatis 映射：

<!-- 回答 与 用户 联通映射 -->
    <resultMap id="findAllBugAnswerMap" type="com.talentscout.vo.BugAnswerAndUserInfo">
         <result property="count" column="count"/>
         <association property="bugAnswer" javaType="com.talentscout.pojo.bug.BugAnswer">
             <result property="aid" column="aid"/>
             <result property="aContent" column="aContent"/>
             <result property="aDate" column="aDate"/>
             <result property="like_count" column="like_count"/>
             <result property="uid" column="uid"/>
             <result property="wid" column="wid"/>
         </association>
         <association property="userInfo" javaType="com.talentscout.pojo.user.UserInfo">
             <result property="nickName" column="nickName"/>
             <result property="portrait" column="portrait"/>
         </association>
    </resultMap>

实体

@Data
@ToString
public class BugAnswerAndUserInfo {
    private BugAnswer bugAnswer; // 回答实体
    private int count; // 子回复数量
    private UserInfo userInfo; // 用户信息实体
    private UserInfo userInfoSon; // 子用户信息实体
}

测试

    @Override
    public List<BugAnswerAndUserInfo> findAllBugAnswerByBid(Integer bid, Integer wid) {
        for (BugAnswerAndUserInfo bugAnswerAndUserInfo : bugMainMapper.findAllBugAnswerByBid(bid, wid)) {
            System.out.println(bugAnswerAndUserInfo.toString());
        }
        return bugMainMapper.findAllBugAnswerByBid(bid,wid);
    }

结果

BugAnswerAndUserInfo(bugAnswer=BugAnswer(aid=32, aContent=WebSocket yyds！, aDate=Tue Oct 26 06:15:13 CST 2021, like_count=0, bid=0, uid=NO_2, wid=0), count=0, userInfo=UserInfo(uid=null, nickName=勇敢牛牛, age=0, sex= , register_date=null, brief=null, direaction=null, collective=null, portrait=t2.jpg), userInfoSon=null)

最离谱的是我特喵没动，之前是能查询出来的，莫名其妙就只查询出一条了

Answer 1

你确定练的是同一个库？实在不行，defaultSqlsession打断点，看看最终执行的sql