FLOOR (Transact-SQL)
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Azure Synapse Analytics
Analytics Platform System (PDW)
Returns the largest integer less than or equal to the specified numeric expression.
Transact-SQL syntax conventions
Syntax
FLOOR ( numeric_expression )
Note
To view Transact-SQL syntax for SQL Server 2014 and earlier, see Previous versions documentation.
Arguments
numeric_expression
Is an expression of the exact numeric or approximate numeric data type category, except for the bit data type.
Return Types
Returns the same type as numeric_expression.
Examples
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
Examples: Azure Synapse Analytics and Analytics Platform System (PDW)
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