mongodb中的全部数据：db.testInfo.find({}) .sort({_id:-1}) .limit(100) 查询结果：/* 1 createdAt:2019/10/11 下午5:12:50*/ {"_id" : ObjectId("5da04792665cd81dc0d46d3d"),"name" : "jim2","age" : 5,"list" : [{"title" : "a2","price" : 1},{"title" : "a1","price" : 5}] },/* 2 createdAt:2019/10/11 下午5:01:55*/ {"_id" : ObjectId("5da04503665cd81dc0d46d3c"),"name" : "leo","age" : 4,"list" : [{"title" : "a1",...
/* 1 */ {"_id" : ObjectId("55e542cd7f8b9aca2b8b4568"),"game_id" : 1103,"tags" : [ {"tag_id" : 10,"name" : "西游","rank" : 10,}, {"tag_id" : 123,"name" : "网游","rank" : 1,}, ],"time_sort" : 1435306 }/* 2 */ {"_id" : ObjectId("55dd8fe67f8b9a25528b64f7"),"game_id" : 6408,"tags" : [ {"tag_id" : 28,"name" : "白领最爱","rank" : 20,}, {"tag_id" : 123,"name" : "网游","rank" : 2,}, ],"time_sort" : 1411574...