Encloses a series of Transact-SQL statements so that a group of Transact-SQL statements can be executed. BEGIN and END are control-of-flow language keywords.
BEGIN...END blocks can be nested.
Although all Transact-SQL statements are valid within a BEGIN...END block, certain Transact-SQL statements should not be grouped together within the same batch, or statement block. For more information, see Batches and the individual statements used.
In the following example, BEGIN and END define a series of Transact-SQL statements that execute together. If the BEGIN...END block were not included, both ROLLBACK TRANSACTION statements would execute and both PRINT messages would be returned.
USE AdventureWorks2008R2; GO BEGIN TRANSACTION; GO IF @@TRANCOUNT = 0 BEGIN SELECT FirstName, MiddleName FROM Person.Person WHERE LastName = 'Adams'; ROLLBACK TRANSACTION; PRINT N'Rolling back the transaction two times would cause an error.'; END; ROLLBACK TRANSACTION; PRINT N'Rolled back the transaction.'; GO /* Rolled back the tranaction. */