根据排序方式：

SQL：

 <select id="query**" resultType="com.guoguo.brains.model.AnsModel">
 // 查询语句
        SELECT
        id AS Id,
        count AS Count,
        FROM
        t_answer
        WHERE
        brain_storm_id = #{Id}
        
//条件--根据orderStyle的值按评论数、点赞数、时间排序

        <choose>
            <when test="orderStyle=='commentStyle'">
                order by count
                desc
            </when>
            <when test="orderStyle=='likeStyle'">
                order by like
                desc
            </when>
            <otherwise>
                order by tb_answer.create_time
            </otherwise>
        </choose>

    </select>