mongodb query builder online

toThe results of the implementation are as follows: MongoDB Shell version v4.0.0Connecting To:mongodb://192.168.16.111:20001/adminMongoDB Server version:3.4.9Warning:shell and server versions do not match{"Host": "iz2zeem1uivcbfbr01nmnrz:20000","Version": "3.4.9","Process": "MONGOs","pid": Numberlong (10828),"Uptime": 24441734,"Uptimemillis": Numberlong ("24441733680"),"Uptimeestimate": Numberlong (24441733),"LocalTime": Isodate ("2018-08-02t09

Label:Recent projects need to use MONGODB, so downloaded the source of MongoDB on the internet, according to the sample written test code, but found a very strange problem: the speed of inserting records faster than the speed of data acquisition, and the most important problem is that the speed of data acquisition is unacceptable.Test scenario: Main Document storage personnel basic information, sub-document

Related information 1. MongoDBforJava driver package github. commongodbmongo-java-driverdownloads2, online documentation www. mongodb. orgdisplayDOCSJava + Language + Center operation 1. query all data in a table (called a set in MongoDB) using the Java code DBTest. javapack Related information 1,

Tags: created int query condition IDs line ISP convert objMongoDB (online) optimization 1. Find, FindOne 2. A public method of operating the Vip_emp_relation 3. Number of query records 4. Save, insert 5. Summary 1. Find, FindOne Project examples Mongotemplate mongotemplate =mongodbclient.getmongotemplate (); Dbcollecti

an index MongoDB supports indexing and can easily be added to a set, you just specify that a field is indexed, and you can also specify a positive sequence index (1) and a descending index (-1) The following code creates an index for I $coll->ensureindex (Array ("I" => 1)); An index was created on "I" $coll->ensureindex (Array ("I" =>-1, "J" => 1))//Reverse index created on "I" creates a positive index on "J" ?> a simple one. This example shows how t

following code creates an index for I Copy Code code as follows: $coll->ensureindex (Array ("I" => 1)); An index was created on "I" $coll->ensureindex (Array ("I" =>-1, "J" => 1))//Reverse index created on "I" creates a positive index on "J" ?> A complete and simple example This example shows how to link MongoDB databases, how to select databases, how to insert data, how to query da

mongotest.php, set the user name and password required for the connection, and establish a database connection $conn = new Mongo ("Mongodb://localhost:27017//admin:admin");The default user and password is adminSelect Database Blog, if not, create$db = $conn->blog;can also be written: $db = $conn->selectdb (' blog ');Develop result set (table name: Posts)$collection = $db->posts;Can also be written as: $collection = $db->selectcollection (' pos

The production environment instance frequently OOM, the investigation discovery mainly by some $near query causes, the query resembles follows, in which the LATLNG field has established 2d index. {"Find": "UserData",' Filter ': {"LATLNG": {"$near": [116.34642045073839,39.87082232130999],"$maxDistance": 0.9009009009009009}},"Ntoreturn": 10000} The official explanation is that the $near need to sort, actual