trancount-transact-sql.md

title	@@TRANCOUNT (Transact-SQL) | Microsoft Docs
ms.custom
ms.date	08/29/2017
ms.prod	sql
ms.prod_service	database-engine, sql-database, sql-data-warehouse, pdw
ms.reviewer
ms.technology	t-sql
ms.topic	language-reference
f1_keywords	@@TRANCOUNT_TSQL @@TRANCOUNT
dev_langs	TSQL
helpviewer_keywords	@@TRANCOUNT function number of active transactions connections [SQL Server], active transactions active transactions
ms.assetid	b2638410-e410-4bd0-9b54-90096182b2b6
author	MikeRayMSFT
ms.author	mikeray
monikerRange	>=aps-pdw-2016||=azuresqldb-current||=azure-sqldw-latest||>=sql-server-2016||=sqlallproducts-allversions||>=sql-server-linux-2017||=azuresqldb-mi-current

@@TRANCOUNT (Transact-SQL)

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

Returns the number of BEGIN TRANSACTION statements that have occurred on the current connection.

Transact-SQL Syntax Conventions

Syntax

@@TRANCOUNT  

Return Types

integer

Remarks

The BEGIN TRANSACTION statement increments @@TRANCOUNT by 1. ROLLBACK TRANSACTION decrements @@TRANCOUNT to 0, except for ROLLBACK TRANSACTION savepoint_name, which does not affect @@TRANCOUNT. COMMIT TRANSACTION or COMMIT WORK decrement @@TRANCOUNT by 1.

Examples

A. Showing the effects of the BEGIN and COMMIT statements

The following example shows the effect that nested BEGIN and COMMIT statements have on the @@TRANCOUNT variable.

PRINT @@TRANCOUNT  
--  The BEGIN TRAN statement will increment the  
--  transaction count by 1.  
BEGIN TRAN  
    PRINT @@TRANCOUNT  
    BEGIN TRAN  
        PRINT @@TRANCOUNT  
--  The COMMIT statement will decrement the transaction count by 1.  
    COMMIT  
    PRINT @@TRANCOUNT  
COMMIT  
PRINT @@TRANCOUNT  
--Results  
--0  
--1  
--2  
--1  
--0  

B. Showing the effects of the BEGIN and ROLLBACK statements

The following example shows the effect that nested BEGIN TRAN and ROLLBACK statements have on the @@TRANCOUNT variable.

PRINT @@TRANCOUNT  
--  The BEGIN TRAN statement will increment the  
--  transaction count by 1.  
BEGIN TRAN  
    PRINT @@TRANCOUNT  
    BEGIN TRAN  
        PRINT @@TRANCOUNT  
--  The ROLLBACK statement will clear the @@TRANCOUNT variable  
--  to 0 because all active transactions will be rolled back.  
ROLLBACK  
PRINT @@TRANCOUNT  
--Results  
--0  
--1  
--2  
--0  

See Also

BEGIN TRANSACTION (Transact-SQL)
COMMIT TRANSACTION (Transact-SQL)
ROLLBACK TRANSACTION (Transact-SQL)
System Functions (Transact-SQL)