SQL Server Transact-SQL ISO/IEC 9075-3 Standards Support Document describes the level of support that is provided by Transact-SQL in both Microsoft SQL Server 2008 R2 and Microsoft SQL Server 2012 for Part 3: Call-Level Interface (SQL/CLI) of the 2008 version of the SQL language ISO/IEC 9075 international standard specification.
The Transact-SQL language is a procedural extension of the SQL database programming language as implemented by Microsoft [MSDN-Transact-SQLRef]. Transact-SQL supports and extends ANSI SQL. The Transact-SQL dialect is based on International Standard IS0/IEC 9075.
At the time of first release of [MS-TSQLISO03], ISO/IEC 9075-3:2008 was the most current version of Part 3.