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bitwise-and-equals-transact-sql.md

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title description author ms.author ms.date ms.service ms.subservice ms.topic ms.custom f1_keywords helpviewer_keywords dev_langs monikerRange
&= (Bitwise AND assignment) (Transact-SQL)
Performs a bitwise logical AND operation between two integer values, and sets a value to the result of the operation.
rwestMSFT
randolphwest
04/25/2024
sql
t-sql
reference
ignite-2024
&=
&=_TSQL
compound operators, &=
assignment operators, &=
augmented operators, &=
&= (bitwise AND equals)
TSQL
>=aps-pdw-2016 || =azuresqldb-current || =azure-sqldw-latest || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric

&= (Bitwise AND assignment) (Transact-SQL)

[!INCLUDE sql-asdb-asdbmi-asa-pdw-fabricse-fabricdw-fabricsqldb]

Performs a bitwise logical AND operation between two integer values, and sets a value to the result of the operation.

:::image type="icon" source="../../includes/media/topic-link-icon.svg" border="false"::: Transact-SQL syntax conventions

Syntax

expression &= expression

Arguments

expression

Any valid expression of any one of the data types in the numeric category, except the bit data type.

Return types

Returns the data type of the argument with the higher precedence. For more information, see Data type precedence (Transact-SQL).

Remarks

The &= operator is shorthand for using the = and & operators. The following two queries are equivalent.

-- &= operator
DECLARE @bitwise INT = 1;
SET @bitwise &= 1;
SELECT @bitwise;
GO

-- = and & operators
DECLARE @bitwise INT = 1;
SET @bitwise = @bitwise & 1;
SELECT @bitwise;
GO

Both examples return a result of 1.

For more information, see & (Bitwise AND) (Transact-SQL).

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