Migrate Mysql To Mssql

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Migrate MySQL to Microsoft SQL Server By Niklas Henricson

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5 Sep 2008

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Migrate MySQL to Microsoft SQL Server in just a few simple steps 9 votes for this article. Popularity: 4.26 Rating: 4.47 out of 5

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Introduction This article is describing few simple steps in order to migrate a MySQL into Microsoft SQL Server 2005. The technique is very easy, but useful if you plan to move your data from MySQL and upgrade it finally to an MS SQL Server enviroment.

Background Initially I started my search for an article in Codeproject regarding MySQL->MS SQL migration without any success. I had an old PHPbb forum running, that needed to be upgraded to a Microsoft enviroment entirely. I could have just kept MySQL and Apache server, but instead I decided to migrate the entire concept of PHPbb to a YAF-forum.

Setup ODBC connection to MySQL database This article will not go through on how to setup a MySQL or MS SQL server, but make sure you have downloaded at least the MySQL ODBC Connector from here: http://dev.mysql.com/downloads/connector/ For this article I downloaded the MySQL ODBC Connector 5.1. The setup of this connector is pretty simple: • Open your ODBC Data Source Administrator from the Control Panel -> Administrative Tools. Under the tab labeled as "System DSN" press the "Add" button.

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• On the "Create New Data Source" dialog that appeared, choose MySQL ODBC 5.1 Driver and then press the "Finish" button.

• After that a MySQL connection configuration dialog will appear. Add your MySQL database account information in it, preferably the "root" account which has full access to your databases in MySQL. In this case my database is called "tigerdb". Do not change the port to anything else then 3306, unless during your MySQL server installation have defined something else.

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• Press the "Test" button to ensure your connection settings are set properly and then the "OK" button when you're done.

Create a MS SQL link to your MySQL database In this state you are ready to establish a link towards MySQL database from your Microsoft SQL Server Management Studio. Open a query window and run the following SQL statement: EXEC master.dbo.sp_addlinkedserver @server = N'MYSQL', @srvproduct=N'MySQL', @provider=N'MSDASQL', @provstr=N'DRIVER={MySQL ODBC 5.1 Driver}; SERVER=localhost; DATABASE=tigerdb; USER=root;

This script will produce a link to your MySQL database through the ODBC connection you just created on the previous stage of this article. The link will appear in the MS SQL Server Management studio like this:

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If it doesn't show up in the treeview, press the refresh button.

Import data between the databases Create a new database in Microsoft SQL Server. I called mine for "testMySQL". In the query window run the following SQL statement to import table shoutbox from the MySQL database tigerdb, into the newly created database in MS SQL called testMySQL. SELECT * INTO testMySQL.dbo.shoutbox FROM openquery(MYSQL, 'SELECT * FROM tigerdb.shoutbox')

Thats it!

Points of Interest During this migration I had to import lately my newly migrated database into the structure of "Yet Another Forum" tables. For that I used a series of SQL-scripts. However I am not going to post them here. If folks leave comments here about the need to these script, just tell me and I will gladly change this article and start adding them. You're welcome to post your comments. Another issue you will most likely encounter are the differences between these two databases based on datatypes. I would suggest to proceed with a reverse engineering of your MySQL database (for example, Visio is one application that provides reverse engineering functionality) and start mapping all the differences and potential risks of loosing parts of data for instance, within varchar columns. Microsoft SQL datatypes: http://msdn.microsoft.com/en-us/library/aa258271.aspx MySQL datatypes: http://dev.mysql.com/tech-resources/articles/visual-basic-datatypes.html

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History 2008-09-05: First version of this article.

License This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author Niklas Henricson

Niklas Henricson began with programming in 1999 by working for the Swedish Working Life Enviroment authority. Since then, he has been involved in numerous projects involving MTS/COM+, VB 6.0, ISE Eiffel 4.5, ASP.NET/C#/VB.NET as well as common ASP, and finally database enviroments based on Oracle, MySQL and MS SQL. Between April 2007 and December 2008, Niklas worked as consultant for Mandator AB with some of his assignments spended in Ericsson.

Member

Today he works as a senior consultat at Cybercom Group in Sweden assigned in a project for the Swedish Institute for Infectious Disease Control. One of his most favorite books regarding programming is "The Pragmatic Programmer". Something he is recommending everyone to read. Occupation: Web Developer Company:

Cybercom Group South AB

Location:

Sweden

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