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less-than-transact-sql.md

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title < (Less Than) (Transact-SQL)
description &lt; (Less Than) (Transact-SQL)
author rwestMSFT
ms.author randolphwest
ms.date 03/13/2017
ms.service sql
ms.subservice t-sql
ms.topic reference
ms.custom
ignite-2025
f1_keywords
<_TSQL
helpviewer_keywords
less than (<)
< (less than operator)
dev_langs
TSQL
monikerRange >=aps-pdw-2016 || =azuresqldb-current || =azure-sqldw-latest || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric || =fabric-sqldb

< (Less Than) (Transact-SQL)

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

Compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left operand has a value lower than the right operand; otherwise, the result is FALSE. If either or both operands are NULL, see the topic SET ANSI_NULLS (Transact-SQL).

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

Syntax

expression < expression

Arguments

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

Result Types

Boolean

Examples

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 the value 3.

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

[!INCLUDEssResult]

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

B. Using < to compare two variables

DECLARE @a INT = 45, @b INT = 40;  
SELECT IIF ( @a < @b, 'TRUE', 'FALSE' ) AS Result;

[!INCLUDEssResult]

Result  
------  
FALSE  
  
(1 row(s) affected)

See Also