MongoDB Installation and Simple commands

MONGO official website Http://www.mongodb.org/downloads

Vue Tools Download http://www.mongovue.com/downloads/

Build a folder, put the extracted MONGO file, in the new one put the specified database

Make a variable, specify bin

The following folders and paths can be customized

Mongod--dbpath D:\installSoft\mongoDbDATA

MONGO 127.0.0.1:27017/admin

Here is a simple command

Download MongoDB specified path datamongod--dbpath e:\mongoDB\mongoDbDATAmongo 127.0.0.1:27017/adminuse dbname--New database Db.dropdatabase ()--delete show DBS-Show show collections-Display set Db.persons.insert ({name: "Hello"})--insert Data db.persons.find () Db.persons.update ({name: "Hello"},{$set: {name: "NEWH"}}) var p=db.persons.findone () pdb.persons.update (p,{name: " Updatev "}) db.persons.update ({name:" Updatev "},{$set: {age:1,name:" NEWV "}}) Db.persons.remove ({age:1})-- Delete Data Db.persons.drop ()--delete personsdb.help () function insertxx (obj) {db.getcollection ("DbName"). Text.insert (obj)} Insertxx ({name: "Hello"}) db.getcollection ("DbName"). Find () db.eval ("Return ' MongoDB '") for (Var i=0;i<10;i++) { Db.pp.insert ({name:i})}db.pp.insert ({_id: "repeat"})--error Db.pp.save ({_id: "repeat"})--Update db.pp.remove ()--Collection Delete Index does not delete db.system.indexes.find () db.pp.remove ({_id:1})--Conditional Delete db.docName.update ({finder},{modifier}) insertorupdate--Default false Db.docName.update ({},{modifier},true)--batch update false update does not save, true Bulk (the first data is only updated by default) db.pp.update ({name: "Hello"},{$set: {name: "Hellowrold"}},false,true)$set $inc--Append the number $unset--Remove the designated Jian $push--Wangga array db.test.update ({_id:1},{$push: {books:["", "" ","]}) Db.test.update ({ _id:1},{$pushAll: {books:["", "", "]}) $addToSet--If the array is not added Db.test.update ({_id:1},{addtoset{books:" hellos " }}) $pop-1 Delete the first value 1 remove the last value 1$pull--Deletes a specified value $pullall db.test.update ({_id:1},{$pullAll: {books:["AA", "BB"]}}) $. In the array pair image, modify Db.test.update ({"Books.type": "DB"},{$set: {"Books.$.author": "Liangrui"})--add some not to join, do not join Db.test.update ({ _id:2},{$addToSet: {books:{$each: ["JS", "DB"]}})--runcommand can only modify one Lou according to whether the new return PP is updated or updated Ps=db.runcommand ({"Findan Dmodify ":" "Test", "query": {"name": "Hello"}, "Update": {"$set": {"Age": "Wwww"}, "new": True}) Ps.valuedb.rui.find ({},{ _ID:0,NAME:1})--Query the specified column {condition} {display} 0 does not display the number of m between >25 <30 () db.rui.find ({m:{$gte: $lte: 30}},{_id:0,name:1})-- Not equal to Db.rui.find ({name:{$ne: "Hello"}},{})--in in Db.rui.find ({name:{$in: ["Hello"]}},{})--nin not Db.rui.find ({name:{$ nin:["Hello"]}},{})--or C greater than 20 or m greater than 30 of data Db.rui.find ({$or: [{c:{$gt: 20}},{m:{$gt: 30}}]},{})--Query is null db.rui.find ({sex:{$in: [Null]}},{_id:0,name:1,sex:2})--Regular query Db.rui.find ({name:/ji/i},{_id:0, NAME:1})--Take back Db.rui.find ({name:{$not:/ji/i}},{_id:0,name:1})--like JS and Java book student Db.rui.find ({books:{$all: ["JS", "Java "]}},{books:1,_id:0,name:2}"--Query the second C + + student Db.rui.find ({"Books.1": "C + +"},{books:1,_id:0,name:2})--Query the specified length array $size It cannot be used with the comparison query to query out the number of books that you like 4 students Db.rui.find ({books:{$size: 3}})-------to check out the students who like the number of bookcase more than 2 db.rui.update ({},{$set: {size:3}}, false,true) Db.rui.find ()--Update sizedb.rui.update ({},{$set: {size:3}},false,true) db.rui.update ({name: "Jim"} at the time of the addition and subtraction of the book) {$push: {books: "C"}, $inc: {size:1}})--Db.rui.find of the book ==5 ({size:4})--query Jim likes the number of books Var jim=db.rui.find ({name: "Jim"}) while (Jim.hasnext ()) {obj=jim.next (); print (obj.books.length)}shell is a JS engine to use the driver package $slice the internal value of the specified array db.rui.find ({name: "    Jim "},{books:{$slice: [1,3]},_id:0})-1 last book Db.rui.find ({name:" Jim "},{books:{$slice: -1},_id:0})--document query Var jim=[{ School: "K", Score: "A"}, {school: "L", Score: "B"}, {SchoOL: "J", Score: "P+"}]db.rui.update ({name: "Jim"},{$set: {school:jim}})--Must be in order, all specified Db.rui.find ({school:{school: "K", Score: "A"}},{_id:0})--optimization Db.rui.find ({"School.score": "A", "School.school": "K"},{_id:0,school:1})--$ Elemmatch Solve order problems and traverse all object queries Db.rui.find ({school:{$elemMatch: {school: "K"}}},{_id:0,school:1}) $where query age greater than 22, like C + +  Student Db.rui.find at K School ({"$where": function () {///each document that gets query results var books=this.books;  Get the School object Var school=this.school in the document;  If the age >=22 if (this.age>22) {var cjj=null;   Traverse data for (Var i=0;i<books.length;i++) {if (books[i]== "C + +") {Cjj=books[i]; If the school is true if (school) {for (Var j=0;j<school.length;j++) {//is not at K School go to school if (school[j].school== "K") {//return true return True;}}   Break }}})---paging Db.rui.find ({},{_id:0,name:1}). Limit (5) db.rui.find ({},{_id:0,name:1}). Limit (5). Skip (5) db.ru I.find ({},{_id:0,name:1,age:2}). Limit (5). Skip (5). Sort ({age:1}) Db.rui.find ({},{_id:0,name:1,age:2}). Limit (5). Skip (5). Sort ({name:-1})

MongoDB Installation and Simple commands