Cannot get Linked Servers to work in Sql Azure

Question

We are using a trial version of Azure. We are trying to perform cross server queries from our SQL 2012 in-house.

We seem to have our local 2012 linked with Azure. When I

Answer 1

This works for me:

CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'mypassword';

CREATE DATABASE SCOPED CREDENTIAL MySecurity 
WITH IDENTITY = 'mylogin',
SECRET = 'mypassword';

CREATE EXTERNAL DATA SOURCE MyDbAccess
WITH (
    TYPE=RDBMS,
    LOCATION='server name',
    DATABASE_NAME='db_name',
    CREDENTIAL= MySecurity);

CREATE EXTERNAL TABLE MyExtTable (
    [Id] [int]  NOT NULL,
    [Name] [varchar(20)] NULL)
WITH
(DATA_SOURCE = MyDbAccess);

After that you can just use it:

SELECT * FROM MyExtTable

Answer 2

While adding linked server from SQL Management, you are not given option to set default database. So use something like below

EXEC sp_addlinkedserver
@server='name for referring locally', -- here you can specify the name of the linked server
@srvproduct='',     
@provider='sqlncli', -- using SQL Server native client
@datasrc='AzureMachineName.database.windows.net',   -- add here your server name
@location='',
@provstr='',
@catalog='yourdatabasename' 

I figured this works.

Answer 3

Need to execute below mentioned three stored procedures to add SQL Azure. Using below these stored procedure I was able to query SQL azure.

EXEC sp_addlinkedserver
@server='PROD',
@srvproduct='',     
@provider='sqlncli',
@datasrc='azureserver.database.windows.net',
@location='',
@provstr='',
@catalog='database name'


EXEC sp_addlinkedsrvlogin 
@rmtsrvname = 'PROD',
@useself = 'false',
@rmtuser = 'Azure login',
@rmtpassword = 'password'

EXEC sp_serveroption 'PROD', 'rpc out', true

Answer 4

Did you actually setup connection to perseus database? By looking at the error message your are sending a query with 3 part or 4 part name to Azure which doesn't work as is in Azure. Please check your query and set it to use 2 part name and only three part name if it is connecting to the same database