mybatis in 查询 限制in的数量

    List<Testcl> test(List<String> list);

    <select id="test" resultMap="Model">
        select
        *
        from
        t_test
        where n_yx = 1 and c_id in 
        <foreach collection="list" item="id" index="index" open="(" close=")" separator=",">
              #{id}
        </foreach>
        order by d_create
    </select>

 对集合分组

Lists.partition（）