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

expression Any valid expression. Both expressions must have implicitly convertible data types.

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:

EmpID	Name	City	Age	Salary
1	John	London	25	3000
2	Marry	New York	24	2750
3	Jo	Paris	27	2800
4	Kim	Amsterdam	30	3100
5	Ramesh	New Delhi	28	3000
6	Huang	Beijing	28	2800

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:

EmpID	Name	City	Age	Salary
1	John	London	25	3000
2	Marry	New York	24	2750
3	Jo	Paris	27	2800

❮ PostgreSQL Operators