V. MongoDB Interactive Shell

Introduction

The MongoDB release package containsBin/MongoIt is the MongoDB Interactive Shell environment. This tool is a javascript shell that allows you to initiate commands from the command line to MongoDB. (Basically, it is an extension of the spidermonkey shell ).

The shell is used:

• View database content
• Test Query
• Create an index
• Other management functions

In this Wiki, if you see some JavaScript-like code, you can consider it as a shell example. View the charts in the driver syntax table to convert these examples into other languages.

More information

• Shell Overview

• Shell reference

• Shell API documentation

Shell data type number

By default, shell considers the number to be a floating point. You can use a shell-embedded longnumber () class to use 64-bit integers. If you want [bson] data of an integer or long integer, you may see the following:

 "bytes" : { "floatApprox" : 575175 } 

Or, in version 1.6 +, the larger number is displayed as follows:

 {..., "bytes" : NumberLong(5284376243087482000) ,...} 

Note that long numbers in versions earlier than 1.6 are displayed as follows:

 "bytes" : { "floatApprox" : 5284376243087482000, "top" : 1230364721, "bottom" : 4240317554 } 

In addition, setting or increasing any number with JavaScript will change the data type to a floating point number.

Time

The date () method returns a string,NewDate () "returns an object (you use it to store data ).

> Date () sun May 02 2010 19:07:40 GMT-0700 (Pacific Daylight Time)> new date () "Sun May 02 2010 19:07:43 GMT-0700 (Pacific Daylight Time) "> typeof (new date () Object> typeof (date () string // The following content is printed:> new date () isodate (" 2010-11-29t19: 41: 46.730z ")

Binary data

[Bson] The bindata data type is displayed in shell through the bindata class. RunHelp
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