PostgreSQL - NOT Operator

The PostgreSQL NOT Operator is used to display a record where the specified condition is not true.

Syntax

The syntax for using NOT operator in PostgreSQL is given below:

SELECT column1, column2, column3, ...
FROM table_name
WHERE NOT condition;

Example:

Consider a database containing a table called Employee with the following records:

• To select all records of the Employee table where City is NOT "New Delhi", the query is given below.

  SELECT * FROM Employee
  WHERE NOT City = 'New Delhi';
  

  
  

  This will produce the result as shown below:

  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
  6	Huang	Beijing	28	2800