PowerSQL By Prashanth Jayaram

Blog Post

MongoDB – Insert,Update,Upsert and Delete Examples – CRUD

In MongoDB we have to use either insert() or save() method to add the document to a collection

Insert Single document
> db.employee.insert( 
    {"employee_id":1101, 
    "name":"Prashanth", 
    "sal":90000, 
    "dob": newDate(1983,2,3,5,20), 
    "department": 
        [ 
            'DB Amdin','DB Developer' 
        ], 
    "Location":"New York"});
Insert Multiple...

2016-04-20

737 reads

Blog Post

MongoDB -Get Total datasize of all DB’s

var sum = 0; db.getMongo().getDBs()[“databases”].forEach(function(x) { sum += db.getMongo().getDB(x.name).stats().dataSize }); print(sum );

OR
db = db.getSiblingDB(“admin”);
dbs = db.runCommand({ “listDatabases”: 1 }).databases;
var sum1=0;dbs.forEach(function(database) { sum1+=db.getMongo().getDB(database.name).stats().dataSize }); print(sum1);

2016-04-11

443 reads

Blogs

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Question of the Day

Restoring On Top I

I am doing development work on a database and want to keep a backup so I can reset my database. I make some changes and want to restore over top of my changes. When I run this code, what happens?

USE Master
BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak'
GO

USE DNRTest
GO
CREATE TABLE MyTest(myid INT)
GO
USE master
RESTORE DATABASE DNRTest FROM DISK = 'dnrtest.bak' WITH REPLACE

See possible answers