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description: "& (Bitwise AND) (Transact-SQL)"
title: "& (Bitwise AND) (Transact-SQL) | Microsoft Docs"
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# & (Bitwise AND) (Transact-SQL)
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  Performs a bitwise logical AND operation between two integer values.  
  
 ![Topic link icon](../../database-engine/configure-windows/media/topic-link.gif "Topic link icon") [Transact-SQL Syntax Conventions](../../t-sql/language-elements/transact-sql-syntax-conventions-transact-sql.md)  
  
## Syntax  
  
```syntaxsql
expression & expression  
```  
  
[!INCLUDE[sql-server-tsql-previous-offline-documentation](../../includes/sql-server-tsql-previous-offline-documentation.md)]

## Arguments
 *expression*  
 Is any valid [expression](../../t-sql/language-elements/expressions-transact-sql.md) of any of the data types of the integer data type category, or the **bit**, or the **binary** or **varbinary** data types. *expression* is treated as a binary number for the bitwise operation.  
  
> [!NOTE]  
>  In a bitwise operation, only one *expression* can be of either **binary** or **varbinary** data type.  
  
## Result Types  
 **int** if the input values are **int**.  
  
 **smallint** if the input values are **smallint**.  
  
 **tinyint** if the input values are **tinyint** or **bit**.  
  
## Remarks  
 The **&** bitwise operator performs a bitwise logical AND between the two expressions, taking each corresponding bit for both expressions. The bits in the result are set to 1 if and only if both bits (for the current bit being resolved) in the input expressions have a value of 1; otherwise, the bit in the result is set to 0.  
  
 If the left and right expressions have different integer data types (for example, the left *expression* is **smallint** and the right *expression* is **int**), the argument of the smaller data type is converted to the larger data type. In this case, the **smallint** _expression_ is converted to an **int**.  
  
## Examples  
 The following example creates a table using the **int** data type to store the values and inserts two values into one row.  
  
```sql
CREATE TABLE bitwise (   
  a_int_value INT NOT NULL,  
  b_int_value INT NOT NULL);  
GO  
INSERT bitwise VALUES (170, 75);  
GO  
```  
  
 This query performs the bitwise AND between the `a_int_value` and `b_int_value` columns.  
  
```sql  
SELECT a_int_value & b_int_value  
FROM bitwise;  
GO  
```  
  
 Here is the result set:  
  
```  
-----------   
10            
  
(1 row(s) affected)  
```  
  
 The binary representation of 170 (`a_int_value` or `A`) is `0000 0000 1010 1010`. The binary representation of 75 (`b_int_value` or `B`) is `0000 0000 0100 1011`. Performing the bitwise AND operation on these two values produces the binary result `0000 0000 0000 1010`, which is decimal 10.  
  
```  
(A & B)  
0000 0000 1010 1010  
0000 0000 0100 1011  
-------------------  
0000 0000 0000 1010  
```  
  
  
## See Also  
 [Expressions (Transact-SQL)](../../t-sql/language-elements/expressions-transact-sql.md)   
 [Operators (Transact-SQL)](../../t-sql/language-elements/operators-transact-sql.md)   
 [Bitwise Operators (Transact-SQL)](../../t-sql/language-elements/bitwise-operators-transact-sql.md)   
 [&= (Bitwise AND Assignment) (Transact-SQL)](../../t-sql/language-elements/bitwise-and-equals-transact-sql.md)   
 [Compound Operators (Transact-SQL)](../../t-sql/language-elements/compound-operators-transact-sql.md)