Transact-SQL (T-SQL) is a programming language that is used to interact with relational databases such as SQL Server 2008. It is an extension of the Structured Query Language (SQL) and provides additional programming constructs such as variables, control statements, and procedural programming capabilities.
T-SQL is used to create, modify, and delete database objects such as tables, views, stored procedures, functions, and triggers. It is also used to manipulate data by inserting, updating, and deleting records in tables, and querying data using SELECT statements.
In SQL Server 2008, T-SQL provides several new features such as table-valued parameters, the MERGE statement for performing complex updates and inserts, the OUTPUT clause for returning modified data, and the hierarchyid data type for representing hierarchical data. T-SQL can be used in conjunction with other programming languages such as C# or VB.NET to create powerful database applications. It is a powerful tool for managing data in SQL Server 2008 and is widely used by database administrators and developers.
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