mongo regex contains

Query the first document that meets the criteria (cannot be called a record for MONGO)Db. Collection_name.findone ({},{});Query for eligible documents and sort by specified criteria, skip the previous N1 documents, and return a list of up to N2

http://www.mongoing.com/archives/2282In general, there are two main tools to limit the schema of MongoDB:Variety: See what happens in each field in collectionsDocument Validation: Qualification of field rules for data in tables, error and warn level,

MongoDB samus Driver (2), mongodbsamus driver The driver connection method mentioned in the previous article. This article provides the complete link code and instance Complete database link 1 static IMongo _ mongo = null; 2 public writable drive ()

A regular expression is a string that is used to describe and match a series of strings that conform to a certain syntactic rule.Many programming languages support the use of regular expressions for string manipulation.MongoDB uses the $regex

Mongodb Study Notes 03. mongodb Study NotesMongodb Study Notes 03-query expression Not equal to, greater than, less ! =: Db. stu. find ({name: {$ ne: 'billvsme '}) name is not 'billvsme' >: Db. stu. find ({age: {$ gt: 18}) older than 18 >=: $

MongoDB is a high performance NoSQL database based on document type, which has excellent performance under high concurrency, therefore, the use of MongoDB in the Internet industry will be very extensive. Of course, MongoDB is mainly concerned about

Connecting to a database Mongoclient VS Connection Class Mongoclient (pymongo.common.BaseObject) | Connection to MongoDB. | | Method Resolution Order: | Mongoclient | Pymongo.common.BaseObject | __builtin__.object | Class