云数据库上有个集合：class，数据如下： [     {         "name":"一班",         "students":[             {                 "studentNo": "101",                 "studentName": "张一"             }, {                 "studentNo": "102",                 "studentName": "王一"             }         ]     },{         "name":"二班",         "students":[             {                 "studentNo": "201",                 "studentName": "李二"             }, {                 "studentNo": "202",                 "studentName": "赵二"             }         ]     } ] 我现在有个学号列表，比如["101", "202"]，我想查询class集合，匹配这个学号列表，查询列表中存在的学生，返回的结果中students里只包含匹配的学生信息，也就是说想得到下面的目标数据，请问这个如何实现？ [     {         "name":"一班",         "students":[             {                 "studentNo": "101",                 "studentName": "张一"             }         ]     },{         "name":"二班",         "students":[             {                 "studentNo": "202",                 "studentName": "赵二"             }         ]     } ]