total-read-transact-sql.md

title	@@TOTAL_READ (Transact-SQL) | Microsoft Docs
ms.custom
ms.date	09/17/2017
ms.prod	sql
ms.prod_service	sql-database
ms.reviewer
ms.technology	t-sql
ms.topic	language-reference
f1_keywords	@@TOTAL_READ_TSQL @@TOTAL_READ
dev_langs	TSQL
helpviewer_keywords	number of disk reads disks [SQL Server], number of disk reads @@TOTAL_READ function total read [SQL Server] read activity since last started
ms.assetid	b505fbe9-9569-4f3d-80b9-b64b5109ac98
author	MikeRayMSFT
ms.author	mikeray

@@TOTAL_READ (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-xxxx-xxxx-xxx-md]

Returns the number of disk reads, not cache reads, by [!INCLUDEssNoVersion] since [!INCLUDEssNoVersion] was last started.

Transact-SQL Syntax Conventions

Syntax

  
@@TOTAL_READ  

Return Types

integer

Remarks

To display a report containing several [!INCLUDEssNoVersion] statistics, including read and write activity, run sp_monitor.

Examples

The following example shows returning the total number of disk read and writes as of the current date and time.

SELECT @@TOTAL_READ AS 'Reads', @@TOTAL_WRITE AS 'Writes', GETDATE() AS 'As of';  

[!INCLUDEssResult]

Reads       Writes      As of                   
----------- ----------- ----------------------  
7760        97263       12/5/2006 10:23:00 PM   

See Also

sp_monitor (Transact-SQL)
System Statistical Functions (Transact-SQL)
@@TOTAL_WRITE (Transact-SQL)