assignment-operator-transact-sql.md

title	description	author	ms.author	ms.date	ms.service	ms.subservice	ms.topic	ms.custom	helpviewer_keywords	dev_langs	monikerRange
= (Assignment Operator) (Transact-SQL)	= (Assignment Operator) (Transact-SQL)	rwestMSFT	randolphwest	03/14/2017	sql	t-sql	reference	ignite-2024	operators [Transact-SQL], assignment assignment operators [Transact-SQL] headings [SQL Server columns] relationships [SQL Server], assignment operators column headings [SQL Server]	TSQL	>=aps-pdw-2016 || =azuresqldb-current || =azure-sqldw-latest || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric

= (Assignment Operator) (Transact-SQL)

[!INCLUDE SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Parallel Data Warehouse fabricse fabricdw-fabricsqldb]

The equal sign (=) is the only [!INCLUDEtsql] assignment operator. In the following example, the @MyCounter variable is created, and then the assignment operator sets @MyCounter to a value returned by an expression.

DECLARE @MyCounter INT;  
SET @MyCounter = 1;  

The assignment operator can also be used to establish the relationship between a column heading and the expression that defines the values for the column. The following example displays the column headings FirstColumnHeading and SecondColumnHeading. The string xyz is displayed in the FirstColumnHeading column heading for all rows. Then, each product ID from the Product table is listed in the SecondColumnHeading column heading.

-- Uses AdventureWorks  
  
SELECT FirstColumnHeading = 'xyz',  
       SecondColumnHeading = ProductID  
FROM Production.Product;  
GO  

See Also

Operators (Transact-SQL)
Compound Operators (Transact-SQL)
Expressions (Transact-SQL)