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去重 - MongoDB如何去除組合重復(fù)項(xiàng)

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From [MongoDBdiscussion group] 2017-04-27 09:02:29 0  3  1289

javascript - Use nodejs to transfer database data to the front desk. There is data in the database and the connection is successful, but why is an empty array obtained?

1.api.js 2.db.js 3.vue 4. Database The result is: The result obtained is an empty array, but the link and the ...

From [MongoDBdiscussion group] 2017-06-05 11:08:50 0  4  1286

nosql - MongoDB search time and number of matching conditions

Just like this, Baidu found a total of XXXXXX related results for you. It took XXXX milliseconds. How is this ...

From [MongoDBdiscussion group] 2017-05-17 10:04:08 0  1  1286

sphinx - mongodb搭配什么搜索引擎好？

mongodb已經(jīng)內(nèi)建了搜索引擎，不過現(xiàn)在還不支持中文。 想問問有什么其他搜索引擎可以用。 我想到了一種方法是用mysql+sphinx單獨(dú)做搜索，不知道是否可行

From [MongoDBdiscussion group] 2017-04-24 09:11:05 0  2  1282

mongodb內(nèi)嵌文檔查找和修改問題

數(shù)據(jù)的格式是這樣的: {代碼...} 現(xiàn)在我想的是 1 , 查詢people_id 為 1 且 privilege 為 5的內(nèi)嵌文檔,mongodb的查詢命令怎么寫的啊 2,更新people_id 為 2 且權(quán)限為 id...

From [MongoDBdiscussion group] 2017-04-24 09:12:57 0  3  1281

nosql - MongoDB單文檔大小限制是16M嗎？這里包括嵌入的子文檔嗎？

從官方文檔http://cn.docs.mongodb.org/manual/ref...： BSON Object Size The maximum BSON object size is 16 megabytes.這...

From [MongoDBdiscussion group] 2017-04-21 10:56:10 0  1  1263

mongodb - Mongo group分組后，怎么對(duì)分組后的結(jié)果進(jìn)行從大到小排序，并取前5個(gè)

{代碼...} 最后的結(jié)果，我想要count數(shù)量從大到小排列，并且只取前五個(gè)，能用finalize實(shí)現(xiàn)嗎？具體怎么寫函數(shù)呢？？或者能用什么方法實(shí)現(xiàn)？？？？

From [MongoDBdiscussion group] 2017-04-24 09:14:07 0  2  1245

python - pymongo Do you need to close manually?

Do you need to close pymongo manually?

From [MongoDBdiscussion group] 2017-06-16 09:19:09 0  3  1231

mongodb使用find查詢獲取的游標(biāo)是否可以遍歷出查詢執(zhí)行后的數(shù)據(jù)庫(kù)新增的記錄

mongodb使用find查詢返回的游標(biāo)，是否可以遍歷出查詢執(zhí)行后(記錄比較多查詢時(shí)間比較長(zhǎng)，此時(shí)查詢還未執(zhí)行完)數(shù)據(jù)表新增的記錄。 例如： 線程A在時(shí)間點(diǎn)t1使用find查詢數(shù)據(jù)表user返回游標(biāo)，遍歷數(shù)據(jù)記錄。 線程...

From [MongoDBdiscussion group] 2017-04-24 16:00:18 0  2  1231

linux - Problem with logging in using mongodb permissions after installing ubuntu mongodb apt

I received a text message notification from Alibaba Cloud in the middle of the night yesterday, saying that th...

From [MongoDBdiscussion group] 2017-05-02 09:26:31 0  1  1224

mongodb 官網(wǎng)無法下載

因?yàn)楣倬W(wǎng)下載頁(yè)面里引用的js有些被墻了，所以頁(yè)面無法正常運(yùn)行，也就點(diǎn)不到下載地址了，我想要windows版的,國(guó)內(nèi)如何下載？

From [MongoDBdiscussion group] 2017-04-27 09:03:16 0  3  1222

mongodb - mongoose how to query multiple models

For example, {code...} {code...} It is known that user_id, file_name, page_id, and model are asynchronous. How...

From [MongoDBdiscussion group] 2017-06-20 10:05:55 0  4  1220

javascript - Problems encountered by mongoose in Baidu bae long connection

Baidu bae mongodb does not support long connections and requires a reconnection mechanism. I saw others on the...

From [MongoDBdiscussion group] 2017-05-31 10:36:10 0  1  1218

mongodb - mongo修改字段名？

mongo修改字段(列)名.

From [MongoDBdiscussion group] 2017-05-02 09:18:18 0  1  1212

node.js - mongoose obtains user information through UserId and cannot save it to the object

{Code...} {Code...} Why doesn't assigning a value directly like this take effect? How should we save the queri...

From [MongoDBdiscussion group] 2017-06-05 11:08:53 0  2  1204