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Transacciones implícitas de Transact-SQL

Las aplicaciones de DB-Library de Transact-SQL y de Scripts de Transact-SQL utilizan la instrucción SET IMPLICIT_TRANSACTIONS ON de Transact-SQL para iniciar el modo de transacciones implícitas. Utilice la instrucción SET IMPLICIT_TRANSACTIONS OFF para desactivar el modo de transacciones implícitas. Utilice las instrucciones COMMIT TRANSACTION, COMMIT WORK, ROLLBACK TRANSACTION o ROLLBACK WORK para finalizar cada transmisión.

SET QUOTED_IDENTIFIER OFF;
GO
SET NOCOUNT OFF;
GO
USE AdventureWorks;
GO
CREATE TABLE ImplicitTran
    (Cola int PRIMARY KEY,
    Colb char(3) NOT NULL);
GO
SET IMPLICIT_TRANSACTIONS ON;
GO
-- First implicit transaction started by an INSERT statement.
INSERT INTO ImplicitTran VALUES (1, 'aaa');
GO
INSERT INTO ImplicitTran VALUES (2, 'bbb');
GO
-- Commit first transaction.
COMMIT TRANSACTION;
GO
-- Second implicit transaction started by a SELECT statement.
SELECT COUNT(*) FROM ImplicitTran;
GO
INSERT INTO ImplicitTran VALUES (3, 'ccc');
GO
SELECT * FROM ImplicitTran;
GO
-- Commit second transaction.
COMMIT TRANSACTION;
GO
SET IMPLICIT_TRANSACTIONS OFF;
GO