SQL Azure - copy table between databases

Question

I am trying to run following SQL:

INSERT INTO Suppliers ( [SupplierID], [CompanyName]) 
Select  [SupplierID], [CompanyName] From [AlexDB]..Suppliers
<         


        

Answer 1

Since 2015, this can be done by use of elastic database queries also known as cross database queries.

I created and used this template, it copies 1.5 million rows in 20 minutes:

CREATE MASTER KEY ENCRYPTION BY PASSWORD = '';

CREATE DATABASE SCOPED CREDENTIAL SQL_Credential  
WITH IDENTITY = '',
SECRET = '';

CREATE EXTERNAL DATA SOURCE RemoteReferenceData
WITH
(
    TYPE=RDBMS,
    LOCATION='.database.windows.net',
    DATABASE_NAME='',
    CREDENTIAL= SQL_Credential
);

CREATE EXTERNAL TABLE [dbo].[source_table] (
    [Id] BIGINT NOT NULL,
    ...
)
WITH
(
    DATA_SOURCE = RemoteReferenceData
)

SELECT *
 INTO target_table
FROM source_table