AI代码解释 >db.system.profile.find().pretty(){"op":"query",# 操作类型,可为command、count、distinct、geoNear、getMore、group、insert、mapReduce、query、remove、update"ns":"test.report",# 操作的目标namespace库表"command":{# 操作的具体command"find":"report",...},"cursorid":33629063128,# q...
The following example uses the regular expression[0-9]{2} (.){4}sto find movie titles which begin with a 2-digit number followed by a space, and end with a 5-letter word ending ins. 1db.movies.aggregate([ 2{ 3"$search": { ...
find_one_and_update(filter, update, projection, sort, upsert, return_document, array_filters, hint, session, **kwargs) if __name__ == "__main__": print("---start---") mongoUtil = MongoDBUtil(ip="127.0.0.1", db_name="xl01", port="27017") """数据库操作""" stat = mongo...
附录:JAVA程序代码(eclipse下) packagemongodb;importjava.util.List;importcom.mongodb.BasicDBObject;importcom.mongodb.DB;importcom.mongodb.DBCollection;importcom.mongodb.MongoClient;publicclassjavaFindDistinct {publicstaticvoidmain(String[] args) {try{ MongoClient mongoClient=newMongoClient("localhost",...
//Operations inside thetransaction try{ productsCollection.updateOne( {sellerId:456,name:"vest"}, {$set: {price:25} } ); sellersCollection.updateOne( { }, {$set: {"products.$[element].price":25} }, {arrayFilters: [ {"element.name":"vest"} ] } ...
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collection = db.students // Insert many documents res = collection.insertMany([{ enrollno: "110470116021", name: "John Adams", college: GetMongoBsonMinKey() }, { enrollno: "110470116022", name: "Jane Madison", college: GetMongoBsonMaxKey() }]) res = collection.find().toArray() </...
or QBE for short. Because the goal is to find the document containing a lastname field whose value is set to “Neward,” a Document containing one lastname field and its value is created and passed in as the parameter to FindOne. If the query is successful, it returns another Document ...
$cursor = DB::collection('users')->raw(function($collection) { return $collection->find(); });Optional: if you don't pass a closure to the raw method, the internal MongoCollection object will be accessible:$model = User::raw()->findOne(array('age' => array('$lt' => 18)));The...
// "i"代表忽略大小写 // 然后使用这个 filter 来查询数据库 cursor, err := collection.Find(...