SQL Server NOT Condition (Operator)

Last updated on Dec 17 2021
Amit Warghade

Table of Contents

SQL Server NOT Condition (Operator)

The SQL Server NOT condition or NOT operator is employed to negate a condition during a SELECT, INSERT, UPDATE, or DELETE statement.

Syntax:

  1. NOT condition

Parameter explanation

condition: It specifies the condition that you simply want to negate.

NOT Operator with IN condition

We have a table “Employees”, having the subsequent data:

image001 28
“NOT” condition

Example

Retrieve all employees from the table where the subsequent “NOT” condition is satisfied:

  1. SELECT *
    FROM [tecklearn].[dbo].[Employees]
    WHERE name NOT IN ('Mahesh', 'Mohan', 'Chitra');

Output:

image002 18
SELECT *

NOT Operator with IS NULL condition

Retrieve all employees from the table “Employees” which follows the isn’t NULL condition:

  1. SELECT *
    FROM [tecklearn].[dbo].[Employees]
    WHERE name isn't NULL;

Output:

image003 17
IS NULL

NOT Operator with LIKE condition

Retrieve all employees from the table “Employees” which follows the NOT LIKE condition. it’ll display only names which don?t start with “M”.

  1. SELECT *
    FROM [tecklearn].[dbo].[Employees]
    WHERE name NOT LIKE 'M%';

Output:

image004 14
IS NULL

NOT Operator with BETWEEN condition

Retrieve all employees from the table “Employees”, which follows the subsequent condition. it’ll not show the workers between the id 8 to 13.

  1. SELECT *
    FROM [tecklearn].[dbo].[Employees]
    WHERE id NOT BETWEEN 8 AND 13;

Output:

image005 15
BETWEEN

Or

  1. SELECT *
    FROM [tecklearn].[dbo].[Employees]
    WHERE id < 8
    OR id > 13;

Output:

image006 12
BETWEEN

NOT Operator with EXISTS condition

You can also combine SQL Server NOT condition with the EXISTS condition.

OR condition:

  1. SELECT *
    FROM [tecklearn].[dbo].[Employees]
    WHERE NOT EXISTS (SELECT *FROM [tecklearn].[dbo].[Employee2]
    WHERE Employees.name = Employee2.name
    OR Employees.salary = Employee2.salary);

Output:

image007 10
EXISTS

AND Condition:

  1. SELECT * FROM [tecklearn].[dbo].[Employees]
    WHERE NOT EXISTS (SELECT *
    FROM [tecklearn].[dbo].[Employee2]
    WHERE Employees.name = Employee2.name
    AND Employees.salary = Employee2.salary);

Output:

image008 13
AND Condition

This SQL Server NOT example would return all records from the workers table where there are not any records within the Employee2 table for the matching name and salary.

So, this brings us to the end of blog. This Tecklearn ‘SQL Server NOT Condition’ blog helps you with commonly asked questions if you are looking out for a job in MS-SQL Server. If you wish to learn MS-SQL Server and build a career in Database domain, then check out our interactive, MS-SQL Server Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

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