先看集合post中文档信息:
1
2
3
4
5
6
7
8
9
10
11
|
> db.post. find ();
{ "_id" : ObjectId( "54a51cfd7f46906f81b7adcd" ), "bar" : "baz" }
{ "_id" : 0 }
{ "_id" : 1 }
{ "_id" : 2 }
{ "_id" : 5, "test1" : 0 }
{ "_id" : 4, "test2" : 2 }
{ "_id" : 3, "test3" : 3 }
{ "_id" : 6, "test5" : 5 }
{ "_id" : 7, "test1" : 1 }
{ "_id" : 8, "test1" : 1 }
|
删除指定的文档:
1
2
3
4
5
6
7
8
9
10
11
12
|
> db.post.remove({ "_id" :5});
WriteResult({ "nRemoved" : 1 })
> db.post. find ();
{ "_id" : ObjectId( "54a51cfd7f46906f81b7adcd" ), "bar" : "baz" }
{ "_id" : 0 }
{ "_id" : 1 }
{ "_id" : 2 }
{ "_id" : 4, "test2" : 2 }
{ "_id" : 3, "test3" : 3 }
{ "_id" : 6, "test5" : 5 }
{ "_id" : 7, "test1" : 1 }
{ "_id" : 8, "test1" : 1 }
|
删除所有{“test1”:1}的文档:
1
2
3
4
5
6
7
8
9
10
11
|
> db.post.remove({ "test1" :1});
WriteResult({ "nRemoved" : 2 })
> db.post. find ();
{ "_id" : ObjectId( "54a51cfd7f46906f81b7adcd" ), "bar" : "baz" }
{ "_id" : 0 }
{ "_id" : 1 }
{ "_id" : 2 }
{ "_id" : 4, "test2" : 2 }
{ "_id" : 3, "test3" : 3 }
{ "_id" : 6, "test5" : 5 }
> |
删除整个post集合:
1
2
3
4
5
|
> db.post.drop() true > show collections system.indexes > |
本文转自 bannerpei 51CTO博客,原文链接:http://blog.51cto.com/281816327/1598301,如需转载请自行联系原作者