Microsoft has released its first community tech preview for a MySQL to SQL Server migration tool. This tool supports SQL Server 2005, 2008, and Azure.
Migrating from MySQL to SQL Server consists of a three-step process. The first step is to convert the schema from MySQL to SQL Server syntax. Then you can create a new SQL Server database and load the converted schema. After verifying the new schema using their side-by-side metadata explorer, you can use the tool to migrate the data itself.
CTP1 version only supports tables, indexes and constraints. According to Denis Vnukov, Microsoft Program Manager, support for stored procedures, functions, triggers and views will be included in final version.
You can download CTP 1 from Microsoft Downloads. Migration tools are also available for Access, Oracle, and Sybase.