SQL Server FLOOR Function is a mathematical function that returns the largest integer value that is less than or equal to a number.
SYNTAX
FLOOR ( numeric_expression )
numeric_expression
Is a numeric input value or approximate numeric data type category.
Lets look at an example of FLOOR() function in SQL Server.
FLOOR function with positive values
For input value 100.01
SELECT FLOOR(100.01) AS OUTPUT
It returns 100, which is a largest integer value that is less than input value 100.01.
For input value 155.61
SELECT FLOOR(155.61) AS OUTPUT
It returns 155, which is a largest integer value that is less than input value 155.61.
For input value 00.50
SELECT FLOOR(00.50) AS OUTPUT
It returns 0, which is a largest integer value that is less than input value 00.50.
For input value 568.01
SELECT FLOOR(568.01) AS OUTPUT
It returns 568, which is a largest integer value that is less than input value 568.01.
FLOOR function with positve valuesย
For Negative input value -00.01
SELECT FLOOR(-00.01) AS OUTPUT
It returns -1, which is a largest integer value that is less than input value -00.01.
For Negative input value -555.12
SELECT FLOOR(-555.12) AS OUTPUT
It returns -556, which is a largest integer value that is less than input value -555.12.
For Negative input value -568.01
SELECT FLOOR(-568.01) AS OUTPUT
It returns -569, which is a largest integer value that is less than input value -568.01.
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