Designing the Application Architecture - Transact-SQL Support (SQL Azure Database)

http://msdn.microsoft.com/en-us/library/ee336250.aspx

Transact-SQL is a language that contains commands used to administer instances of SQL Server including creating and managing all objects in an instance of SQL Server, and inserting, retrieving, modifying, and deleting all data in tables. Applications can communicate
with an instance of SQL Server by sending Transact-SQL statements to the server.

Transact-SQL is an extension of the language defined in the SQL standards published by the International Standards Organization (ISO) and the American National Standards Institute (ANSI). For more information about Transact-SQL, see Transact-SQL
Reference (Database Engine) in SQL Server Books Online.

Microsoft SQL Azure Database supports a subset of Transact-SQL for SQL Server.

The support for Transact-SQL reference in SQL Azure Database can be described in three main categories:

Transact-SQL language elements that are supported as is.

Transact-SQL language elements that are not supported.

Transact-SQL language elements that provide a subset of the arguments and options in their corresponding Transact-SQL elements in SQL Server 2008.

Note
SQL Server Database Engine features that are marked for deprecation may not be supported in SQL Azure Database. Deprecated features should not be used in new applications. Check the list of features marked for deprecation in the Transact-SQL Reference (Database Engine) in SQL Server Books Online.

For more information about the Transact-SQL support in SQL Azure Database, see Transact-SQL Reference (SQL Azure Database).

Supported and Partially Supported Transact-SQL Features

The following Transact-SQL features are supported or partially supported by SQL Azure Database:

Constants

Constraints

Cursors

Extension of spatial data types and methods through CLR

Index management and rebuilding indexes

Local temporary tables

Reserved keywords

Spatial data and indexes

Stored procedures

Statistics management

Transactions

Triggers

Tables, joins, and table variables

Transact-SQL language elements such as

Create/drop databases

Create/alter/drop tables

Create/alter/drop users and logins

User-defined functions

Views

Unsupported Transact-SQL Features

The following Transact-SQL features are not supported by SQL Azure Database:

Common Language Runtime (CLR)

Database file placement

Database mirroring

Distributed queries

Distributed transactions

Filegroup management

Global temporary tables

SQL Server configuration options

SQL Server Service Broker

System tables

Trace Flags