{"id":29913,"date":"2023-11-07T04:13:20","date_gmt":"2023-08-14T03:05:43","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/"},"modified":"2025-08-12T16:33:17","modified_gmt":"2025-08-12T08:33:17","slug":"%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/","title":{"rendered":"\u53cd\u5411\u5f15\u7528MongoDB"},"content":{"rendered":"

\u8fd9\u662f\u6211\u5728\u5b8c\u6210Dotinstall\u7684MongoDB\u5165\u95e8\u6559\u7a0b\u65f6\u6240\u505a\u7684\u7b14\u8bb0\u3002<\/p>\n

1. \u6570\u636e\u5e93\u76f8\u5173\u64cd\u4f5c<\/p>\n

1.1. \u6211\u60f3\u67e5\u770b\u6570\u636e\u5e93\u5217\u8868<\/p>\n
> show dbs\r\n<\/code><\/pre>\n
1.2. \u6211\u60f3\u5efa\u7acb\u4e00\u4e2a\u6570\u636e\u5e93<\/p>\n
><\/span> use<\/span> mydb<\/span>\r\n<\/code><\/pre>\n
1.3. \u6211\u60f3\u5c06\u5f53\u524d\u4f7f\u7528\u7684\u6570\u636e\u5e93\u5207\u6362\u5230\u53e6\u4e00\u4e2a\u6570\u636e\u5e93\u3002<\/p>\n
><\/span> use<\/span> mydb<\/span>\r\n<\/code><\/pre>\n
1.4. \u6211\u60f3\u67e5\u770b\u6709\u5173\u6570\u636e\u5e93\u7684\u603b\u4f53\u4fe1\u606f\u3002<\/p>\n
><\/span> db<\/span>.<\/span>stats<\/span>()<\/span>\r\n{<\/span>\r\n    \"<\/span>db<\/span>\"<\/span> :<\/span> \"<\/span>local<\/span>\"<\/span>,<\/span>\r\n    \"<\/span>collections<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n    \"<\/span>objects<\/span>\"<\/span> :<\/span> 2<\/span>,<\/span>\r\n    \"<\/span>avgObjSize<\/span>\"<\/span> :<\/span> 1423<\/span>,<\/span>\r\n    \"<\/span>dataSize<\/span>\"<\/span> :<\/span> 2846<\/span>,<\/span>\r\n    \"<\/span>storageSize<\/span>\"<\/span> :<\/span> 32768<\/span>,<\/span>\r\n    \"<\/span>numExtents<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span>\r\n    \"<\/span>indexes<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n    \"<\/span>indexSize<\/span>\"<\/span> :<\/span> 32768<\/span>,<\/span>\r\n    \"<\/span>ok<\/span>\"<\/span> :<\/span> 1<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
1.5. \u6211\u60f3\u5220\u9664\u6570\u636e\u5e93\u3002 (W\u01d2 .)<\/p>\n
><\/span> db<\/span>.<\/span>dropDatabase<\/span>()<\/span>\r\n{<\/span> \"<\/span>dropped<\/span>\"<\/span> :<\/span> \"<\/span>mydb<\/span>\"<\/span>,<\/span> \"<\/span>ok<\/span>\"<\/span> :<\/span> 1<\/span> }<\/span>\r\n<\/code><\/pre>\n
2. \u5173\u4e8e\u96c6\u5408\u7684\u64cd\u4f5c<\/p>\n
\u60f3\u67e5\u770bCollection\u7684\u5217\u8868<\/p>\n
><\/span> show<\/span> collections<\/span>\r\nusers<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u521b\u5efa\u4e00\u4e2aCollection\u3002<\/p>\n
><\/span> db<\/span>.<\/span>createCollection<\/span>(<\/span>\"<\/span>users<\/span>\"<\/span>)<\/span>\r\n{<\/span> \"<\/span>ok<\/span>\"<\/span> :<\/span> 1<\/span> }<\/span>\r\n<\/code><\/pre>\n
2.3. \u6211\u60f3\u8981\u4fee\u6539Collection\u7684\u540d\u79f0\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>renameCollection<\/span>(<\/span>\"<\/span>customers<\/span>\"<\/span>)<\/span>\r\n{<\/span> \"<\/span>ok<\/span>\"<\/span> :<\/span> 1<\/span> }<\/span>\r\n<\/code><\/pre>\n
2.4. \u6211\u60f3\u5220\u9664Collection\u3002<\/p>\n
><\/span> db<\/span>.<\/span>customers<\/span>.<\/span>drop<\/span>()<\/span>\r\ntrue<\/span>\r\n<\/code><\/pre>\n
3. \u5173\u4e8e\u6587\u6863\u7684\u64cd\u4f5c<\/p>\n
3.1. \u521b\u5efa\u64cd\u4f5c<\/p>\n
\u6211\u60f3\u521b\u5efa\u4e00\u4e2a\u6587\u6863\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>insert<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> score<\/span>:<\/span> 100<\/span>})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nInserted<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>insert<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> score<\/span>:<\/span> 100<\/span>,<\/span> tags<\/span>:<\/span> [<\/span>\"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span>]})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nInserted<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u75283.1.2\u7248\u672c\u7684for\u5faa\u73af\u6765\u521b\u5efaDocument\u3002<\/p>\n
><\/span> for<\/span> (<\/span>var<\/span> i<\/span> =<\/span> 0<\/span>;<\/span> i<\/span> <<\/span> 10<\/span>;<\/span> i<\/span>++<\/span>)<\/span> {<\/span>\r\n...<\/span> db<\/span>.<\/span>users<\/span>.<\/span>insert<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> score<\/span>:<\/span> Math<\/span>.<\/span>random<\/span>()})<\/span>\r\n...<\/span> }<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nInserted<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n<\/code><\/pre>\n
3.2. \u9605\u8bfb\u64cd\u4f5c<\/p>\n
\u6211\u60f3\u67e5\u770b\u6587\u6863\u7684\u5217\u8868\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>()<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a620e956bad693a0943b6f<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a6212d56bad693a0943b70<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.2.2. \u6211\u60f3\u77e5\u9053\u6587\u6863\u7684\u6570\u91cf<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>count<\/span>()<\/span>\r\n22<\/span>\r\n<\/code><\/pre>\n
\u60f3\u8981\u6839\u636e\u6761\u4ef6\u63d0\u53d6\u6587\u6863\u7684\u9700\u6c42<\/p>\n
3.2.3.1. \u76f8\u7b49\/\u4e0d\u76f8\u7b49\u6761\u4ef6<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a6261d56bad693a0943b8f<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>score<\/span>:<\/span> {<\/span>$eq<\/span>:<\/span> 0.7505969204990847<\/span>}})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b88<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7505969204990847<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>score<\/span>:<\/span> {<\/span>$ne<\/span>:<\/span> 0.7505969204990847<\/span>}})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b85<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b86<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.05682618331619349<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b87<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.8607307464013195<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b89<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6928152829564784<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8a<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.12730769462146607<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8b<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6896075949404165<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8c<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7224980348563089<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8d<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6146229528346954<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8e<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6281710749925821<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a6261d56bad693a0943b8f<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.2.3.2. \u5c11\u4e8e \/ \u5c11\u4e8e\u7b49\u4e8e \/ \u5927\u4e8e \/ \u5927\u4e8e\u7b49\u4e8e \u6761\u4ef6<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>score<\/span>:<\/span> {<\/span>$gte<\/span>:<\/span> 0.5<\/span>}})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b85<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b87<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.8607307464013195<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b88<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7505969204990847<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b89<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6928152829564784<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8b<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6896075949404165<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8c<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7224980348563089<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8d<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6146229528346954<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8e<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6281710749925821<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a6261d56bad693a0943b8f<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>score<\/span>:<\/span> {<\/span>$lte<\/span>:<\/span> 0.5<\/span>}})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b86<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.05682618331619349<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8a<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.12730769462146607<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>score<\/span>:<\/span> {<\/span>$lt<\/span>:<\/span> 0.5<\/span>}})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b86<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.05682618331619349<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8a<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.12730769462146607<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>score<\/span>:<\/span> {<\/span>$gt<\/span>:<\/span> 0.5<\/span>}})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b85<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b87<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.8607307464013195<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b88<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7505969204990847<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b89<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6928152829564784<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8b<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6896075949404165<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8c<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7224980348563089<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8d<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6146229528346954<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8e<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6281710749925821<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a6261d56bad693a0943b8f<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.2.3.3. \u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u6307\u5b9a\u6761\u4ef6<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \/^.+chi$\/<\/span>})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a6261d56bad693a0943b8f<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.2.3.4. \u6211\u60f3\u8981\u901a\u8fc7And\u6761\u4ef6\u6765\u6307\u5b9a\u591a\u4e2a\u6761\u4ef6\u63d0\u53d6\u6587\u6863\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \/^i.+a$\/<\/span>,<\/span> score<\/span>:<\/span> {<\/span>$gte<\/span>:<\/span> 0.5<\/span>}})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b85<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b87<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.8607307464013195<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b88<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7505969204990847<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b89<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6928152829564784<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8b<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6896075949404165<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8c<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7224980348563089<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8d<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6146229528346954<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8e<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6281710749925821<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u60f3\u8981\u4f7f\u7528Or\u6761\u4ef6\u6307\u5b9a\u591a\u4e2a\u6761\u4ef6\u6765\u63d0\u53d6Document\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>$or<\/span>:<\/span> [{<\/span>name<\/span>:<\/span> \/^i.+a$\/<\/span>},<\/span> {<\/span>score<\/span>:<\/span> {<\/span>$gte<\/span>:<\/span> 0.5<\/span>}}]})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b85<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b86<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.05682618331619349<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b87<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.8607307464013195<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b88<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7505969204990847<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b89<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6928152829564784<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8a<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.12730769462146607<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8b<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6896075949404165<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8c<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7224980348563089<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8d<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6146229528346954<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8e<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6281710749925821<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a6261d56bad693a0943b8f<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u60f3\u8981\u4f7f\u7528IN\u53e5\u4eceDocument\u4e2d\u63d0\u53d6\u6570\u636e\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>score<\/span>:<\/span> {<\/span>$in<\/span>:<\/span> [<\/span>0.696594451078292<\/span>,<\/span> 0.6896075949404165<\/span>]}})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b85<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8b<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6896075949404165<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u63d0\u53d6\u4e00\u4e9b\u5177\u6709\u7279\u5b9a\u5b57\u6bb5\u7684\u6587\u6863\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>age<\/span>:<\/span> {<\/span>$exists<\/span>:<\/span> true<\/span>}})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a638ce56bad693a0943b90<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>tanaka<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 52<\/span>,<\/span> \"<\/span>age<\/span>\"<\/span> :<\/span> 23<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u67e5\u770b\u5b57\u6bb5\u4e2d\u5305\u542b\u7684\u503c\u7684\u5217\u8868\u3002 (W\u01d2 de zh\u00ed de .)<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>distinct<\/span>(<\/span>\"<\/span>name<\/span>\"<\/span>)<\/span>\r\n[<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>taguchi<\/span>\"<\/span> ]<\/span>\r\n<\/code><\/pre>\n
3.2.5. \u6211\u60f3\u901a\u8fc7\u6307\u5b9a\u5b57\u6bb5\u6765\u63d0\u53d6\u6587\u6863\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({},<\/span> {<\/span>name<\/span>:<\/span> true<\/span>})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b85<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b86<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b87<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b88<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b89<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8a<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8b<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8c<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8d<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a625ec56bad693a0943b8e<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a6261d56bad693a0943b8f<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a638ce56bad693a0943b90<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>tanaka<\/span>\"<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>age<\/span>:<\/span> {<\/span>$exists<\/span>:<\/span> true<\/span>}},<\/span> {<\/span>name<\/span>:<\/span> 1<\/span>})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a638ce56bad693a0943b90<\/span>\"<\/span>),<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>tanaka<\/span>\"<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>age<\/span>:<\/span> {<\/span>$exists<\/span>:<\/span> true<\/span>}},<\/span> {<\/span>name<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a638ce56bad693a0943b90<\/span>\"<\/span>),<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 52<\/span>,<\/span> \"<\/span>age<\/span>\"<\/span> :<\/span> 23<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>age<\/span>:<\/span> {<\/span>$exists<\/span>:<\/span> true<\/span>}},<\/span> {<\/span>name<\/span>:<\/span> 1<\/span>,<\/span> _id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>tanaka<\/span>\"<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.2.6. \u6211\u60f3\u8981\u5bf9\u63d0\u53d6\u7684\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({},<\/span> {<\/span>_id<\/span>:<\/span> false<\/span>}).<\/span>sort<\/span>({<\/span>score<\/span>:<\/span> 1<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.05682618331619349<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.12730769462146607<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6146229528346954<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6281710749925821<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6896075949404165<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6928152829564784<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7224980348563089<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7505969204990847<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.8607307464013195<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>tanaka<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 52<\/span>,<\/span> \"<\/span>age<\/span>\"<\/span> :<\/span> 23<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({},<\/span> {<\/span>_id<\/span>:<\/span> false<\/span>}).<\/span>sort<\/span>({<\/span>score<\/span>:<\/span> -<\/span>1<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>tanaka<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 52<\/span>,<\/span> \"<\/span>age<\/span>\"<\/span> :<\/span> 23<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.8607307464013195<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7505969204990847<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7224980348563089<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6928152829564784<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6896075949404165<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6281710749925821<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6146229528346954<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.12730769462146607<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.05682618331619349<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.2.7. \u60f3\u8981\u9650\u5236\u63d0\u53d6\u7ed3\u679c\u7684\u6570\u91cf<\/p>\n
\u60f3\u8981\u4ece\u63d0\u53d6\u7ed3\u679c\u4e2d\u63d0\u53d6\u51fa\u524dN\u4e2a\u9879\u76ee\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({},<\/span> {<\/span>_id<\/span>:<\/span> false<\/span>}).<\/span>sort<\/span>({<\/span>score<\/span>:<\/span> -<\/span>1<\/span>}).<\/span>limit<\/span>(<\/span>3<\/span>)<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>tanaka<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 52<\/span>,<\/span> \"<\/span>age<\/span>\"<\/span> :<\/span> 23<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.8607307464013195<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.2.7.2. \u53ea\u60f3\u8981\u63d0\u53d6\u7ed3\u679c\u4e2d\u7684\u7b2c\u4e00\u6761<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>findOne<\/span>({},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.2.7.3. \u60f3\u8981\u8df3\u8fc7\u524dN\u9879\u5e76\u62bd\u53d6\u7ed3\u679c\u4e2d\u7684\u5176\u4f59\u9879\u76ee\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>}).<\/span>skip<\/span>(<\/span>7<\/span>)<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7224980348563089<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6146229528346954<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6281710749925821<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>tanaka<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 52<\/span>,<\/span> \"<\/span>age<\/span>\"<\/span> :<\/span> 23<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.3. \u66f4\u65b0\u64cd\u4f5c<\/p>\n
\u60f3\u8981\u66f4\u65b0\u4e0e\u641c\u7d22\u6761\u4ef6\u5339\u914d\u7684\u7b2c\u4e00\u4e2aDocument\u4e2d\u7684\u7279\u5b9a\u5b57\u6bb5\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 100<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>},<\/span> {<\/span>$set<\/span>:<\/span> {<\/span>score<\/span>:<\/span> 80<\/span>}})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ]<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>},<\/span> {<\/span>$set<\/span>:<\/span> {<\/span>score<\/span>:<\/span> 80<\/span>,<\/span> tag<\/span>:<\/span> \"<\/span>new tag<\/span>\"<\/span>}})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span>,<\/span> \"<\/span>tags<\/span>\"<\/span> :<\/span> [<\/span> \"<\/span>web<\/span>\"<\/span>,<\/span> \"<\/span>mobile<\/span>\"<\/span> ],<\/span> \"<\/span>tag<\/span>\"<\/span> :<\/span> \"<\/span>new tag<\/span>\"<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u60f3\u8981\u66f4\u65b0\u4e0e\u641c\u7d22\u6761\u4ef6\u5339\u914d\u7684\u7b2c\u4e00\u4e2a\u6587\u4ef6\u7684\u6574\u4e2a\u6587\u4ef6\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>},<\/span> {<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>taguchi<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>taguchi<\/span>\"<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u8981\u66f4\u65b0\u7b26\u5408\u641c\u7d22\u6761\u4ef6\u7684\u6240\u6709\u6587\u6863\u7684\u7279\u5b9a\u5b57\u6bb5\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.696594451078292<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.05682618331619349<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.8607307464013195<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7505969204990847<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6928152829564784<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.12730769462146607<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6896075949404165<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.7224980348563089<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6146229528346954<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 0.6281710749925821<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>$set<\/span>:<\/span> {<\/span>score<\/span>:<\/span> 80<\/span>}},<\/span> {<\/span>multi<\/span>:<\/span> true<\/span>})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 10<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 10<\/span> })<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u60f3\u8981\u5c06\u641c\u7d22\u6761\u4ef6\u5339\u914d\u5230\u7684\u7b2c\u4e00\u4e2a\u6587\u6863\u4e2d\u7684\u7279\u5b9a\u5b57\u6bb5\u503c\u52a0\u4e0aN\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>$inc<\/span>:<\/span> {<\/span>score<\/span>:<\/span> 5<\/span>}})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.3.5. \u6211\u60f3\u5728\u6ee1\u8db3\u641c\u7d22\u6761\u4ef6\u7684\u7b2c\u4e00\u4e2a\u6587\u6863\u4e2d\u7684\u7279\u5b9a\u5b57\u6bb5\u4e0a\u4e58\u4ee5N\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>$mul<\/span>:<\/span> {<\/span>score<\/span>:<\/span> 5<\/span>}})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 425<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 80<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u60f3\u8981\u5c06\u7b26\u5408\u641c\u7d22\u6761\u4ef6\u7684\u7b2c\u4e00\u4e2a\u6587\u6863\u4e2d\u7279\u5b9a\u5b57\u6bb5\u7684\u540d\u79f0\u8fdb\u884c\u66f4\u6539\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>$rename<\/span>:<\/span> {<\/span>score<\/span>:<\/span> \"<\/span>point<\/span>\"<\/span>}})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>point<\/span>\"<\/span> :<\/span> 2135<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.3.7. \u6211\u60f3\u8981\u4e3a\u7b26\u5408\u641c\u7d22\u6761\u4ef6\u7684\u7b2c\u4e00\u7bc7\u6587\u6863\u6dfb\u52a0\u5b57\u6bb5\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>$set<\/span>:<\/span> {<\/span>team<\/span>:<\/span> \"<\/span>team-4<\/span>\"<\/span>}})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>point<\/span>\"<\/span> :<\/span> 2135<\/span>,<\/span> \"<\/span>team<\/span>\"<\/span> :<\/span> \"<\/span>team-4<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.3.8. \u6211\u60f3\u8981\u5220\u9664\u4e0e\u641c\u7d22\u6761\u4ef6\u5339\u914d\u7684\u7b2c\u4e00\u4e2a\u6587\u6863\u7684\u5b57\u6bb5\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>$unset<\/span>:<\/span> {<\/span>point<\/span>:<\/span> \"\"<\/span>}})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>team<\/span>\"<\/span> :<\/span> \"<\/span>team-4<\/span>\"<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>inaba<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 85<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u5b58\u5728\u4e0e\u641c\u7d22\u6761\u4ef6\u5339\u914d\u7684\u6587\u6863\uff0c\u5219\u66f4\u65b0\u7b2c\u4e00\u4efd\u6587\u6863\uff0c\u5982\u679c\u6ca1\u6709\uff0c\u5219\u521b\u5efa\u65b0\u6587\u6863\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>nakata<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n><\/span> \r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>nakata<\/span>\"<\/span>},<\/span> {<\/span>name<\/span>:<\/span> \"<\/span>nakata<\/span>\"<\/span>,<\/span> score<\/span>:<\/span> 99<\/span>},<\/span> {<\/span>upsert<\/span>:<\/span> true<\/span>})<\/span>\r\nWriteResult<\/span>({<\/span>\r\n    \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span>\r\n    \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n    \"<\/span>nModified<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span>\r\n    \"<\/span>_id<\/span>\"<\/span> :<\/span> ObjectId<\/span>(<\/span>\"<\/span>56a8b8358be74315594831c3<\/span>\"<\/span>)<\/span>\r\n})<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>nakata<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>nakata<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 99<\/span> }<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>update<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>nakata<\/span>\"<\/span>},<\/span> {<\/span>name<\/span>:<\/span> \"<\/span>nakata<\/span>\"<\/span>,<\/span> score<\/span>:<\/span> 90<\/span>},<\/span> {<\/span>upsert<\/span>:<\/span> true<\/span>})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nMatched<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span> \"<\/span>nUpserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span> \"<\/span>nModified<\/span>\"<\/span> :<\/span> 1<\/span> })<\/span>\r\n\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>find<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>nakata<\/span>\"<\/span>},<\/span> {<\/span>_id<\/span>:<\/span> 0<\/span>})<\/span>\r\n{<\/span> \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>nakata<\/span>\"<\/span>,<\/span> \"<\/span>score<\/span>\"<\/span> :<\/span> 90<\/span> }<\/span>\r\n<\/code><\/pre>\n
3.4. \u5220\u9664\u64cd\u4f5c<\/p>\n
\u60f3\u8981\u5220\u9664\u6240\u6709\u6587\u4ef6\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>remove<\/span>({})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nRemoved<\/span>\"<\/span> :<\/span> 22<\/span> })<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u5220\u9664\u4e0e\u641c\u7d22\u6761\u4ef6\u5339\u914d\u7684\u6240\u6709\u6587\u6863\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>remove<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>inaba<\/span>\"<\/span>})<\/span>\r\nWriteResult<\/span>({<\/span> \"<\/span>nRemoved<\/span>\"<\/span> :<\/span> 10<\/span> })<\/span>\r\n<\/code><\/pre>\n
4. \u5173\u4e8e\u7d22\u5f15\u7684\u64cd\u4f5c\u3002<\/p>\n
\u6211\u60f3\u77e5\u9053Collection\u4e2d\u5b9a\u4e49\u7684\u7d22\u5f15\u662f\u4ec0\u4e48\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>getIndexes<\/span>()<\/span>\r\n[<\/span>\r\n    {<\/span>\r\n        \"<\/span>v<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n        \"<\/span>key<\/span>\"<\/span> :<\/span> {<\/span>\r\n            \"<\/span>_id<\/span>\"<\/span> :<\/span> 1<\/span>\r\n        },<\/span>\r\n        \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>_id_<\/span>\"<\/span>,<\/span>\r\n        \"<\/span>ns<\/span>\"<\/span> :<\/span> \"<\/span>mydb.users<\/span>\"<\/span>\r\n    }<\/span>\r\n]<\/span>\r\n<\/code><\/pre>\n
\u60f3\u8981\u521b\u5efa4.2. Index<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>createIndex<\/span>({<\/span>score<\/span>:<\/span> -<\/span>1<\/span>})<\/span>\r\n{<\/span>\r\n    \"<\/span>createdCollectionAutomatically<\/span>\"<\/span> :<\/span> false<\/span>,<\/span>\r\n    \"<\/span>numIndexesBefore<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n    \"<\/span>numIndexesAfter<\/span>\"<\/span> :<\/span> 2<\/span>,<\/span>\r\n    \"<\/span>ok<\/span>\"<\/span> :<\/span> 1<\/span>\r\n}<\/span>\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>getIndexes<\/span>()<\/span>\r\n[<\/span>\r\n    {<\/span>\r\n        \"<\/span>v<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n        \"<\/span>key<\/span>\"<\/span> :<\/span> {<\/span>\r\n            \"<\/span>_id<\/span>\"<\/span> :<\/span> 1<\/span>\r\n        },<\/span>\r\n        \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>_id_<\/span>\"<\/span>,<\/span>\r\n        \"<\/span>ns<\/span>\"<\/span> :<\/span> \"<\/span>mydb.users<\/span>\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n        \"<\/span>v<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n        \"<\/span>key<\/span>\"<\/span> :<\/span> {<\/span>\r\n            \"<\/span>score<\/span>\"<\/span> :<\/span> -<\/span>1<\/span>\r\n        },<\/span>\r\n        \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>score_-1<\/span>\"<\/span>,<\/span>\r\n        \"<\/span>ns<\/span>\"<\/span> :<\/span> \"<\/span>mydb.users<\/span>\"<\/span>\r\n    }<\/span>\r\n]<\/span>\r\n<\/code><\/pre>\n
4.3. \u6211\u60f3\u8981\u5220\u9664\u7d22\u5f15<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>dropIndex<\/span>(<\/span>\"<\/span>score_-1<\/span>\"<\/span>)<\/span>\r\n{<\/span> \"<\/span>nIndexesWas<\/span>\"<\/span> :<\/span> 2<\/span>,<\/span> \"<\/span>ok<\/span>\"<\/span> :<\/span> 1<\/span> }<\/span>\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>getIndexes<\/span>()<\/span>\r\n[<\/span>\r\n    {<\/span>\r\n        \"<\/span>v<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n        \"<\/span>key<\/span>\"<\/span> :<\/span> {<\/span>\r\n            \"<\/span>_id<\/span>\"<\/span> :<\/span> 1<\/span>\r\n        },<\/span>\r\n        \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>_id_<\/span>\"<\/span>,<\/span>\r\n        \"<\/span>ns<\/span>\"<\/span> :<\/span> \"<\/span>mydb.users<\/span>\"<\/span>\r\n    }<\/span>\r\n]<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u521b\u5efa\u4e00\u4e2a\u72ec\u7279\u7684\u7d22\u5f15\u3002<\/p>\n
><\/span> db<\/span>.<\/span>users<\/span>.<\/span>createIndex<\/span>({<\/span>name<\/span>:<\/span> 1<\/span>},<\/span> {<\/span>unique<\/span>:<\/span> true<\/span>})<\/span>\r\n{<\/span>\r\n    \"<\/span>createdCollectionAutomatically<\/span>\"<\/span> :<\/span> false<\/span>,<\/span>\r\n    \"<\/span>numIndexesBefore<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n    \"<\/span>numIndexesAfter<\/span>\"<\/span> :<\/span> 2<\/span>,<\/span>\r\n    \"<\/span>ok<\/span>\"<\/span> :<\/span> 1<\/span>\r\n}<\/span>\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>getIndexes<\/span>()<\/span>\r\n[<\/span>\r\n    {<\/span>\r\n        \"<\/span>v<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n        \"<\/span>key<\/span>\"<\/span> :<\/span> {<\/span>\r\n            \"<\/span>_id<\/span>\"<\/span> :<\/span> 1<\/span>\r\n        },<\/span>\r\n        \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>_id_<\/span>\"<\/span>,<\/span>\r\n        \"<\/span>ns<\/span>\"<\/span> :<\/span> \"<\/span>mydb.users<\/span>\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n        \"<\/span>v<\/span>\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n        \"<\/span>unique<\/span>\"<\/span> :<\/span> true<\/span>,<\/span>\r\n        \"<\/span>key<\/span>\"<\/span> :<\/span> {<\/span>\r\n            \"<\/span>name<\/span>\"<\/span> :<\/span> 1<\/span>\r\n        },<\/span>\r\n        \"<\/span>name<\/span>\"<\/span> :<\/span> \"<\/span>name_1<\/span>\"<\/span>,<\/span>\r\n        \"<\/span>ns<\/span>\"<\/span> :<\/span> \"<\/span>mydb.users<\/span>\"<\/span>\r\n    }<\/span>\r\n]<\/span>\r\n><\/span> db<\/span>.<\/span>users<\/span>.<\/span>insert<\/span>({<\/span>name<\/span>:<\/span> \"<\/span>nakata<\/span>\"<\/span>})<\/span>\r\nWriteResult<\/span>({<\/span>\r\n    \"<\/span>nInserted<\/span>\"<\/span> :<\/span> 0<\/span>,<\/span>\r\n    \"<\/span>writeError<\/span>\"<\/span> :<\/span> {<\/span>\r\n        \"<\/span>code<\/span>\"<\/span> :<\/span> 11000<\/span>,<\/span>\r\n        \"<\/span>errmsg<\/span>\"<\/span> :<\/span> \"<\/span>E11000 duplicate key error collection: mydb.users index: name_1 dup key: { : <\/span>\\\"<\/span>nakata<\/span>\\\"<\/span> }<\/span>\"<\/span>\r\n    }<\/span>\r\n})<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u8981\u8fdb\u884c\u6570\u636e\u5e93\u7684\u5907\u4efd\u548c\u6062\u590d\u3002<\/p>\n
\u6211\u60f3\u5907\u4efd\u6570\u636e\u5e93\u3002<\/p>\n
$ mongodump -d mydb\r\n2016-01-27T21:57:21.642+0900    writing mydb.users to \r\n2016-01-27T21:57:21.643+0900    done dumping mydb.users (3 documents)\r\n\r\n$ ls\r\ntotal 0\r\ndrwxr-xr-x   3 inaba  staff   102 Jan 27 21:57 .\r\ndrwxr-xr-x+ 74 inaba  staff  2516 Jan 27 21:57 ..\r\ndrwxr-xr-x   3 inaba  staff   102 Jan 27 21:57 dump\r\n<\/code><\/pre>\n
5.2. \u6211\u60f3\u8981\u6062\u590d\u6570\u636e\u5e93\u3002<\/p>\n
$ ls\r\ntotal 0\r\ndrwxr-xr-x   3 inaba  staff   102 Jan 27 21:57 .\r\ndrwxr-xr-x+ 74 inaba  staff  2516 Jan 27 21:57 ..\r\ndrwxr-xr-x   3 inaba  staff   102 Jan 27 21:57 dump\r\n\r\n$ mongorestore --drop\r\n2016-01-27T21:58:22.413+0900    using default 'dump' directory\r\n2016-01-27T21:58:22.413+0900    building a list of dbs and collections to restore from dump dir\r\n2016-01-27T21:58:22.414+0900    reading metadata for mydb.users from dump\/mydb\/users.metadata.json\r\n2016-01-27T21:58:22.414+0900    restoring mydb.users from dump\/mydb\/users.bson\r\n2016-01-27T21:58:22.480+0900    restoring indexes for collection mydb.users from metadata\r\n2016-01-27T21:58:22.518+0900    finished restoring mydb.users (3 documents)\r\n2016-01-27T21:58:22.518+0900    done\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u8fd9\u662f\u6211\u5728\u5b8c\u6210Dotinstall\u7684MongoDB\u5165\u95e8\u6559\u7a0b\u65f6\u6240\u505a\u7684\u7b14\u8bb0\u3002 1. \u6570\u636e\u5e93\u76f8\u5173\u64cd\u4f5c 1.1. \u6211\u60f3\u67e5 […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-29913","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u53cd\u5411\u5f15\u7528MongoDB - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u53cd\u5411\u5f15\u7528MongoDB\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u53cd\u5411\u5f15\u7528mongodb\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u53cd\u5411\u5f15\u7528MongoDB\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u53cd\u5411\u5f15\u7528MongoDB\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u53cd\u5411\u5f15\u7528mongodb\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-08-14T03:05:43+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-12T08:33:17+00:00\" \/>\n<meta name=\"author\" content=\"\u6587, \u7fd4\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6587, \u7fd4\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/\",\"name\":\"\u53cd\u5411\u5f15\u7528MongoDB - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2023-08-14T03:05:43+00:00\",\"dateModified\":\"2025-08-12T08:33:17+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/64d5cc7727fffbff2f9a2a8da1de3e5c\"},\"description\":\"\u5173\u4e8e\u53cd\u5411\u5f15\u7528MongoDB\u7684\u6280\u672f\u6587\u7ae0\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/zh\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u53cd\u5411\u5f15\u7528MongoDB\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/64d5cc7727fffbff2f9a2a8da1de3e5c\",\"name\":\"\u6587, \u7fd4\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/920c3d673e0bccacc98e5e6b7149bb3c22edd8d39cb753e5d7d7e471498118a1?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/920c3d673e0bccacc98e5e6b7149bb3c22edd8d39cb753e5d7d7e471498118a1?s=96&d=mm&r=g\",\"caption\":\"\u6587, \u7fd4\"},\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/author\/wenxiang\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"\u53cd\u5411\u5f15\u7528MongoDB - Blog - Silicon Cloud","description":"\u5173\u4e8e\u53cd\u5411\u5f15\u7528MongoDB\u7684\u6280\u672f\u6587\u7ae0","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/zh\/blog\/\u53cd\u5411\u5f15\u7528mongodb\/","og_locale":"zh_CN","og_type":"article","og_title":"\u53cd\u5411\u5f15\u7528MongoDB","og_description":"\u5173\u4e8e\u53cd\u5411\u5f15\u7528MongoDB\u7684\u6280\u672f\u6587\u7ae0","og_url":"https:\/\/www.silicloud.com\/zh\/blog\/\u53cd\u5411\u5f15\u7528mongodb\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2023-08-14T03:05:43+00:00","article_modified_time":"2025-08-12T08:33:17+00:00","author":"\u6587, \u7fd4","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"\u6587, \u7fd4","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"1 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/","url":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/","name":"\u53cd\u5411\u5f15\u7528MongoDB - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website"},"datePublished":"2023-08-14T03:05:43+00:00","dateModified":"2025-08-12T08:33:17+00:00","author":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/64d5cc7727fffbff2f9a2a8da1de3e5c"},"description":"\u5173\u4e8e\u53cd\u5411\u5f15\u7528MongoDB\u7684\u6280\u672f\u6587\u7ae0","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/zh\/blog\/"},{"@type":"ListItem","position":2,"name":"\u53cd\u5411\u5f15\u7528MongoDB"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website","url":"https:\/\/www.silicloud.com\/zh\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/64d5cc7727fffbff2f9a2a8da1de3e5c","name":"\u6587, \u7fd4","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/920c3d673e0bccacc98e5e6b7149bb3c22edd8d39cb753e5d7d7e471498118a1?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/920c3d673e0bccacc98e5e6b7149bb3c22edd8d39cb753e5d7d7e471498118a1?s=96&d=mm&r=g","caption":"\u6587, \u7fd4"},"url":"https:\/\/www.silicloud.com\/zh\/blog\/author\/wenxiang\/"},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%90%91%e5%bc%95%e7%94%a8mongodb\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/29913","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/comments?post=29913"}],"version-history":[{"count":3,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/29913\/revisions"}],"predecessor-version":[{"id":111606,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/29913\/revisions\/111606"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/media?parent=29913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/categories?post=29913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/tags?post=29913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}