<= (Less Than or Equal To) (Transact-SQL)


THIS TOPIC APPLIES TO: yesSQL Server (starting with 2008)yesAzure SQL DatabaseyesAzure SQL Data Warehouse yesParallel Data Warehouse

Compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left operand has a value lower than or equal to the right operand; otherwise, the result is FALSE.

Unlike the = (equality) comparison operator, the result of the >= comparison of two NULL values does not depend on the ANSI_NULLS setting.

Topic link icon Transact-SQL Syntax Conventions

-- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse  
expression <= expression  

Is any valid expression. Both expressions must have implicitly convertible data types. The conversion depends on the rules of data type precedence.


A. Using <= in a simple query

The following example returns all rows in the HumanResources.Department table that have a value in DepartmentID that is less than or equal to the value 3.

-- Uses AdventureWorks  
SELECT DepartmentID, Name  
FROM HumanResources.Department  
WHERE DepartmentID <= 3  
ORDER BY DepartmentID;  

Here is the result set.

DepartmentID Name  
------------ --------------------------------------------------  
1            Engineering  
2            Tool Design  
3            Sales  
(3 row(s) affected)  

Data Types (Transact-SQL)
Operators (Transact-SQL)

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