List All Command In MongoDb

MongoDB

show dbs
// LIst Data Base

show collections
// List Collections

use test
// Select Db

db
//already Data Base

db.link.drop()
// Drop Collection

db.link.count()
// Show Count Document

db.system.namespaces
//collection contains information about all of the database’s collections

db.system.indexes
//collection lists all the indexes in the database. 
//Add and remove data from this collection via the ensureIndex() and dropIndex()

db.system.profile
//collection stores database profiling information. 

db.system.js
// collection holds special JavaScript code for use in server side JavaScript.


// insert Record //////////////////////////////////////////////////////////////////////////////////////////////////////////

db.link.insert({ name : "Amir" , Famile : "Kheirabadi" , tag : ["tutorial" , "Learning" ] });

------------
var doc = {};
doc.famile = "Kheirabadi";
doc.tag = ["tutorial" , "Learning"];
doc.name = {};
doc.name.fname = "Amir";
doc.name.lname = "Kheirabadi";
doc.time = new date;
doc     
db.link.save(doc);



// Query Record /////////////////////////////////////////////////////////////////////////////////////////////

db.link.find()
db.link.find().name
db.link.find({ name : "Amir"} , { Famile : 1})
db.link.findOne({ name : "Amir" })
db.link.find()[0]
db.link.find().forEach(printjson);

var d = db.link.find()[0]
db.link.find(name : d.name )

db.link.find({ num : { $gt : 50 , $lt : 150 }});
// $gt > 50 , $lt < 50 , $gte => 50 , $lte <= 50

db.link.find({ name : { $in : [ "Amir" , "Ali" ]} });
// $in = Match , $nin = Not Match , $all = Match Match

db.link.find({ name.first : { $ne : "Amir" } });
// All Document That Name.first Not Amir

db.link.find({ $or : [{first.name : "Amir"} , {last.name : "Kheirabadi" }] });
// All Document That First Name Is Amir OR Last Name Is Kheirabadi

db.link.find({ $nor : [{first.name : "Amir"} , {last.name : "Kheirabadi" }] });
// All Document That No First Name Is Amir OR  No Last Name Is Kheirabadi

db.link.find({ $and : [{first.name : "Amir"} , {last.name : "Kheirabadi" }] });
// All Document That First Name Is Amir AND Last Name Is Kheirabadi
db.link.find({ name : {first : "AMir" , last : "Kheirabadi"} });

db.link.find({ email : { $exists : true } });
// All Document That Are Email

db.link.find({ number : {  $mod [ 5 , 0]} });
//All Document That Number Mod 5 = 0

db.link.find({ number : { $not : {  $mod [ 5 , 0]} }]);
//All Document That No Number Mod 5 = 0

db.link.find({ login : { $elemMatch : { minutes : 20 } }});
// All Document That login child Have "Minutes : 20"

db.link.find({ login : { $elemMatch : { at : { $lt : new Date(2012, 3, 30) } } }});
// All Documetn That Login From Less Now ago

db.link.find({ $where : 'this.name.first === "Amir"' , ... });
db.link.find({ 'this.name.first === "Amir"' , ... });
// All Document That name First Is Amir And ....

var f = function(){ return this.name.first === "Amir" };
db.users.find(f);
db.users.find({ $where: f });
// Create Function

db.link.distinct( number );
// List All Number In a Array

db.user.count();

db.user.find( {} , { name : 1 , pass : 1});

db.user.find( {} , { name : 1 , pass : 1}).sort({ number : 1 });
// Sort 1 And -1

db.user.find( {} , { name : 1 , pass : 1}).sort({ number : 1 }).limit(1);

db.link.find({} , {name :1}).skip(1 * 3).limit(3)
// find document after 3 doument 1 document




// Update /////////////////////////////////////////////////////////////////////////////////////////////////

db.link.update({ 'name' : "amir"} , { 'name':"amir", 'famile' : "Ahmadi"})

db.link.update({ 'name' : "amir"} , { 'name':"amir", 'famile' : "Ahmadi"} , true);
// Create If Not Exists

var v = { title : "tutplus+"};
db.link.update( v , { $inc : { fav : 10 }})
// fav = fav + 10

db.link.update9 v ,{ $set{ email : '[email protected] '}};
// OverWrite Or Create A New Field

b.link.update9 v ,{ $unset{ email : '[email protected] '}};
// Delete A Field

var bob = db.link.findOne();
bob.name = "Ali";
db.link.save(bob);

db.user.findAndModify({
	query : {name : "amir"},
	update : { $set :{ age : 20} },
	new : true / false,
	sort : {title : 1 },
	field : {title : 1 , age : 1 }
});

var v = { title : "tutplus" };
db.link.find(n);
db.link.update(n , { $push : { tags: ['blogs','site]' }} ); 
// Add Several Tag To

db.link.update(n , { $pushAll : { tags: ['blogs' , 'site'] }} );
// Add Several Tag To  New Array 

db.link.update(n , { $addToSet : { tags : 'blogs' }});
// Add Blogs To Array  if the value is not in the array already

db.link.update(n ,{ $pull : {tags : 'blogs'}});
// removes all instances of a value from an existing array

db.link.update(n ,{ $pullAll : {tags : 'blogs'}});
//removes multiple values from an existing array

db.link.update( n , { $pop : { tags : 1}});
//operator removes the first or last element of an array. Pass $pop a value of 1 to remove the last element in an array and a value of -1 to remove the first element of an array

db.link.update( {random:true} , {$rename : {'random' : 'tasadofi'}} );
//updates the name of a field

db.source-namespace.renameCollection( "target" );
// updates the name of a Collection





// Deleting ///////////////////////////////////////////////////////////////////////////////////////////////

db.link.remove()
// Delete All Document in Collection

db.link.remove({ 'name : 'Amir' });
// Delete Document That Field name = Amir

db.link.findAndModify({
	query : { 'name' : 'amir'},
	remove : true
});

db.dropDatabase();
// Drop already DataBase









//// Indexing /////////////////////////////////////////////////////////////////////////////////////////////////

More Information in : http://docs.mongodb.org/manual/administration/indexes/


db.system.indexes.find()

db.link.find({ 'title' : 'TutsPlus' }).explain();
//explain() method provides information on the query plan. The query plan is the plan the server uses to find the matches for a query. This information may be useful when optimizing a query.

db.link.ensureIndex({ 'title' :  1 });
//Creates an index on the field specified, if that index does not already exist.
//the index. A 1 specifies ascending and a -1 specifies descending.