MongoDB 查询

描述

本教程我们将向大家介绍如何在MongoDB集合中获取数据。

我们使用的数据库名称为\”myinfo\” 我们的集合名称为\”userdetails\”，以下为我们插入的数据：

>db.userdetails.insert({\”user_id\” : \”user1\”,\”password\” :\”1a2b3c\” ,\”date_of_join\” : \”16/10/2010\” ,\”education\” :\”M.C.A.\”
, \”profession\” : \”CONSULTANT\”,\”interest\” : \”MUSIC\”,\”community_name\” :[\”MODERN MUSIC\”, \”CLASSICAL MUSIC\”,\”WESTERN
MUSIC\”],\”community_moder_id\” : [\”MR. Alex\”,\”MR. Dang\”,\”MR Haris\”],\”community_members\” :
[700,200,1500],\”friends_id\” : [\”kumar\”,\”harry\”,\”anand\”],\”ban_friends_id\” :[\”Amir\”,\”Raja\”,\”mont\”]});

> db.userdetails.insert({\”user_id\” : \”user2\”,\”password\” :\”11aa1a\” ,\”date_of_join\” : \”17/10/2009\” ,\”education\”
:\”M.B.A.\” , \”profession\” : \”MARKETING\”,\”interest\” : \”MUSIC\”,\”community_name\” :[\”MODERN MUSIC\”, \”CLASSICAL
MUSIC\”,\”WESTERN MUSIC\”],\”community_moder_id\” : [\”MR. Roy\”,\”MR. Das\”,\”MR Doglus\”],\”community_members\” :
[500,300,1400],\”friends_id\” : [\”pal\”,\”viki\”,\”john\”],\”ban_friends_id\” :[\”jalan\”,\”monoj\”,\”evan\”]});

> db.userdetails.insert({\”user_id\” : \”user3\”,\”password\” :\”b1c1d1\” ,\”date_of_join\” : \”16/10/2010\” ,\”education\”
:\”M.C.A.\” , \”profession\” : \”IT COR.\”,\”interest\” : \”ART\”,\”community_name\” :[\”MODERN ART\”, \”CLASSICAL ART\”,\”WESTERN
ART\”],\”community_moder_id\” : [\”MR. Rifel\”,\”MR. Sarma\”,\”MR Bhatia\”],\”community_members\” :
[5000,2000,1500],\”friends_id\” : [\”philip\”,\”anant\”,\”alan\”],\”ban_friends_id\” :[\”Amir\”,\”Raja\”,\”mont\”]});

> db.userdetails.insert({\”user_id\” : \”user4\”,\”password\” :\”abczyx\” ,\”date_of_join\” : \”17/8/2009\” ,\”education\”
:\”M.B.B.S.\” , \”profession\” : \”DOCTOR\”,\”interest\” : \”SPORTS\”,\”community_name\” :[\”ATHELATIC\”, \”GAMES FAN
GYES\”,\”FAVOURIT GAMES\”],\”community_moder_id\” : [\”MR. Paul\”,\”MR. Das\”,\”MR Doglus\”],\”community_members\” :
[2500,2200,3500],\”friends_id\” : [\”vinod\”,\”viki\”,\”john\”],\”ban_friends_id\” :[\”jalan\”,\”monoj\”,\”evan\”]});