PostgreSQL - Less than or equal to (<=) Operator

The PostgreSQL <= (less than or equal to) operator checks if the value of left operand is less than or equal to the value of right operand and returns true if the condition is true, false otherwise.

Syntax

The syntax for using less than or equal to operator in PostgreSQL is given below:

expression <= expression  

Parameters

Example 1:

The example below shows the usage of less than or equal to operator:

SELECT 10 <= 10;
Result: t

SELECT 10.0 <= 10;
Result: t

SELECT 20 <= 10;
Result: f

SELECT 'abc' <= 'abc';
Result: t

SELECT 'xyz' <= 'abc';
Result: f

Example 2:

Consider a database table called Employee with the following records:

To select records of table where Age of the person is less than or equal to 27, the query is given below.

SELECT * FROM Employee
WHERE Age <= 27;

The query will produce following result: