OR (Transact-SQL)

Applies to: 👁 Image
SQL Server 👁 Image
Azure SQL Database 👁 Image
Azure SQL Managed Instance 👁 Image
Azure Synapse Analytics 👁 Image
Analytics Platform System (PDW) 👁 Image
SQL analytics endpoint in Microsoft Fabric 👁 Image
Warehouse in Microsoft Fabric 👁 Image
SQL database in Microsoft Fabric

Combines two conditions. When more than one logical operator is used in a statement, OR operators are evaluated after AND operators. However, you can change the order of evaluation by using parentheses.

👁 Image
Transact-SQL syntax conventions

Syntax

boolean_expression OR boolean_expression 

Arguments

boolean_expression
Is any valid expression that returns TRUE, FALSE, or UNKNOWN.

Result Types

Boolean

Result Value

OR returns TRUE when either of the conditions is TRUE.

Remarks

The following table shows the result of the OR operator.

Examples

The following example uses the vEmployeeDepartmentHistory view to retrieve the names of Quality Assurance personnel who work either the evening shift or the night shift. If the parentheses are omitted, the query returns Quality Assurance employees who work the evening shift and all employees who work the night shift.

-- Uses AdventureWorks 
 
SELECT FirstName, LastName, Shift 
FROM HumanResources.vEmployeeDepartmentHistory 
WHERE Department = 'Quality Assurance' 
 AND (Shift = 'Evening' OR Shift = 'Night'); 

Here's the result set.

FirstName LastName Shift 
------------ ---------------- ------- 
Andreas Berglund Evening 
Sootha Charncherngkha Night

Examples: Azure Synapse Analytics and Analytics Platform System (PDW)

The following example retrieves the names of employees who either earn a BaseRate less than 20 or have a HireDate January 1, 2001 or later.

-- Uses AdventureWorks 
 
SELECT FirstName, LastName, BaseRate, HireDate 
FROM DimEmployee 
WHERE BaseRate < 10 OR HireDate >= '2001-01-01'; 

See Also

Expressions (Transact-SQL)
Built-in Functions (Transact-SQL)
Operators (Transact-SQL)
SELECT (Transact-SQL)
WHERE (Transact-SQL)