language-elements-transact-sql.md

title	Language Elements (Transact-SQL) | Microsoft Docs
ms.custom
ms.date	06/10/2016
ms.prod	sql-non-specified
ms.prod_service	database-engine, sql-database, sql-data-warehouse, pdw
ms.service
ms.component	t-sql|language-elements
ms.reviewer
ms.suite	sql
ms.technology	database-engine
ms.tgt_pltfrm
ms.topic	language-reference
dev_langs	TSQL
ms.assetid	e9b8daff-b72f-4a53-907d-5a83a78785ec
caps.latest.revision	9
author	BYHAM
ms.author	rickbyh
manager	jhubbard
ms.workload	On Demand

Language Elements (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-all-md]

[!INCLUDEssNoVersion] supports the following language elements.

In This Section

-- (Comment) (Transact-SQL)

Slash Star (Block Comment) (Transact-SQL)

CREATE DIAGNOSTICS SESSION (Transact-SQL)

NULL and UNKNOWN (Transact-SQL)

Transactions (SQL Data Warehouse)

USE (Transact-SQL)