SQL FLOOR() function

FLOOR() function

The SQL FLOOR() function 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) 

Parameters:

MySQL, PostgreSQL, SQL Server, and Oracle

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

Pictorial presentation of FLOOR() Function

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:

FLOOR(17.36)
------------
          17

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:

FLOOR(-17.36)
-------------
          -18

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:

DISTINCT(FLOOR()) COMMISSION*(-50)
----------------- ----------------
               -6             -5.5
               -8             -7.5
               -6               -6
               -7               -7
               -7             -6.5

SQL: Comparing between FLOOR() and CEIL() function

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

Here is a slide presentation which covers the SQL arithmetic functions.

Practice SQL Exercises

• SQL Exercises, Practice, Solution
• SQL Retrieve data from tables [33 Exercises]
• SQL Boolean and Relational operators [12 Exercises]
• SQL Wildcard and Special operators [22 Exercises]
• SQL Aggregate Functions [25 Exercises]
• SQL Formatting query output [10 Exercises]
• SQL Quering on Multiple Tables [8 Exercises]
• FILTERING and SORTING on HR Database [38 Exercises]
• SQL JOINS
• SQL JOINS [29 Exercises]
• SQL JOINS on HR Database [27 Exercises]
• SQL SUBQUERIES
• SQL SUBQUERIES [39 Exercises]
• SQL SUBQUERIES on HR Database [55 Exercises]
• SQL Union[9 Exercises]
• SQL View[16 Exercises]
• SQL User Account Management [16 Exercise]
• Movie Database
• BASIC queries on movie Database [10 Exercises]
• SUBQUERIES on movie Database [16 Exercises]
• JOINS on movie Database [24 Exercises]
• Soccer Database
• Introduction
• BASIC queries on soccer Database [29 Exercises]
• SUBQUERIES on soccer Database [33 Exercises]
• JOINS queries on soccer Database [61 Exercises]
• Hospital Database
• Introduction
• BASIC, SUBQUERIES, and JOINS [39 Exercises]
• Employee Database
• BASIC queries on employee Database [115 Exercises]
• SUBQUERIES on employee Database [77 Exercises]
• More to come!

Want to improve the above article? Contribute your Notes/Comments/Examples through Disqus.

Previous: CEIL
Next: EXP