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SQL floor() function

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Description

The SQL FLOOR() rounded up any positive or negative decimal value down to the next least integer value. SQL DISTINCT along with the SQL FLOOR() function is used to retrieve only unique value after rounded down to the next least integer value depending on the column specified.

Syntax

FLOOR(expression)

MySQL, PostgreSQL, SQL Server and Oracle

All of above platforms support the SQL syntax of FLOOR().

Parameters

Name Description
expression An expression which is a numeric value or numeric data type. Bit data type is not allowed.

Application of FLOOR()

In the subsequent pages we have discussed how to apply FLOOR() with various SQL clauses. For those applications, we have used Oracle 10g Express Edition.

Example :

To get the rounded down to next integer value of 17.36 from the DUAL table, the following sql statement can be used :

SELECT FLOOR(17.36)
FROM dual; 

Output

Sql floor() function on positive value

Sql floor() function on negative value

To get the rounded down to next integer value of -17.36 from the DUAL table, the following sql statement can be used :

SELECT FLOOR(-17.36)
FROM dual; 

Output

Sql floor() function on negetive value

Sql floor() function with distinct

To get the rounded down to next integer value of column 'commission' after multiplying by (-50) from the 'agents' table, the following sql statement can be used :

SELECT DISTINCT(FLOOR(commission*(-50))) "DISTINCT(FLOOR())",
commission*(-50)
FROM agents;

Output

Sql floor() function with distinct

Outputs of the said SQL statement shown here is taken by using Oracle Database 10g Express Edition.

See our Model Database

SQL Arithmetic Functions

SQL Arithmetic Functions, slide presentation

Here is a new document which is a collection of questions with short and simple answers, useful for learning SQL as well as for interviews.



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