SQL NOT Operator

The NOT Operator returns the results when the condition mentioned in the WHERE CLAUSE is not TRUE . The condition is matched and returns those values from the columns that are not true to the condition.

  • Syntax of NOT Operator –

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

Here, as in the syntax shown, in the WHERE clause, we can add NOT Operator with the condition.

Demo Table – 

Product Table

Category Region City Country Customer_ID Customer_name
Office Supplies Central Chicago United States SM-20950 Suzanne McNair
Technology East New York City United States AH-10465 Amy Hunt
Office Supplies East New York City United States AH-10465 Amy Hunt
Office Supplies East Dover United States EP-13915 Emily Phan
Office Supplies East Dover United States EP-13915 Emily Phan
Technology West Aurora United States TP-21565 Tracy Poddar
Office Supplies West Aurora United States TP-21565 Tracy Poddar
Office Supplies East Long Beach United States AR-10825 Anthony Rawles
Office Supplies West Pasadena United States HA-14920 Helen Andreada
Furniture West Pasadena United States HA-14920 Helen Andreada

Example – Consider the Product table of the Customer database where we don’t want to get those customer names that belong to the City of Chicago.

SELECT Category,Region,City,
Country,[Customer ID],[Customer Name]
WHERE NOT City = 'Chicago';

 

The output after executing the above statement is as shown –

Category Region City Country Customer_ID Customer_name
Technology East New York City United States AH-10465 Amy Hunt
Office Supplies East New York City United States AH-10465 Amy Hunt
Office Supplies East Dover United States EP-13915 Emily Phan
Office Supplies East Dover United States EP-13915 Emily Phan
Technology West Aurora United States TP-21565 Tracy Poddar
Office Supplies West Aurora United States TP-21565 Tracy Poddar
Office Supplies East Long Beach United States AR-10825 Anthony Rawles
Office Supplies West Pasadena United States HA-14920 Helen Andreada
Furniture West Pasadena United States HA-14920 Helen Andreada

Here is the result, we got only those customers who do not belong to CHICAGO. So clearly, the returned results show the condition is not TRUE.

 

 

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