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< (Less Than) (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
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
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;
Here's the result set.
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;
Here's the result set.
Result
------
FALSE
(1 row(s) affected)
See Also
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