The NOT operator is used to negate a condition in a SQL query. It returns true if the condition is false, and vice versa.

Example: Using NOT

SELECT Name
FROM FreedomFighters
WHERE NOT City = 'Erode';

Do's and Don'ts

Do's

• Use NOT to exclude specific values or conditions.
• Test your queries to ensure the NOT condition works as expected.

Don'ts

• Don't overuse NOT; consider restructuring your logic for clarity.
• Don't forget that NOT can affect query performance on large datasets.