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Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Azure Synapse Analytics
Analytics Platform System (PDW)
SQL analytics endpoint in Microsoft Fabric
Warehouse in Microsoft Fabric
Returns the largest integer less than or equal to the specified numeric expression.
Transact-SQL syntax conventions
FLOOR ( numeric_expression )
numeric_expression
Is an expression of the exact numeric or approximate numeric data type category.
The return type depends on the input type of numeric_expression:
| Input type | Return type |
|---|---|
| float, real | float |
| decimal(p, s) | decimal(38, s) |
| int, smallint, tinyint | int |
| bigint | bigint |
| money, smallmoney | money |
| bit | float |
If the result does not fit in the return type, an arithmetic overflow error occurs.
The following example shows positive numeric, negative numeric, and currency values with the FLOOR function.
SELECT FLOOR(123.45), FLOOR(-123.45), FLOOR($123.45);
The result is the integer part of the calculated value in the same data type as numeric_expression.
--------- --------- -----------
123 -124 123.0000
The following example shows positive numeric, negative numeric, and values with the FLOOR function.
SELECT FLOOR(123.45), FLOOR(-123.45), FLOOR($123.45);
The result is the integer part of the calculated value in the same data type as numeric_expression.
----- --------- -----------
123 -124 123