What is the significance of the NOT operator in SQL and how is it used in conditional statements?

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Aryan Kumar · Answer

The NOT operator in SQL is a logical operator that negates the value of a condition. The
NOT operator can be used to reverse the meaning of a conditional statement.
The NOT operator has the following syntax:
SQL
NOT condition;
The condition can be any expression, including literal values, column names, or function calls. The
NOT operator will return TRUE if the condition is FALSE, and FALSE if the
condition is TRUE.
Here is an example of how the NOT operator can be used:
SQL
SELECT customer_name
FROM customers
WHERE NOT age andlt; 18;
This query will select the customer_name column from the customers table. The
NOT operator will be used to reverse the meaning of the condition 
age andlt; 18. This means that the query will only select customers who are 18 years old or older.
Here is another example of how the NOT operator can be used:
SQL
SELECT product_name
FROM products
WHERE NOT price > 100;
This query will select the product_name column from the products table. The
NOT operator will be used to reverse the meaning of the condition 
price > 100. This means that the query will only select products that are priced at 100 or less.
The NOT operator can be used in a variety of ways to reverse the meaning of a conditional statement in SQL. It is a powerful tool that can be used to filter data, or to control the flow of a query.
Here are some other examples of how the NOT operator can be used:
To select customers who are not under 18 years old.To select products that are not priced over 100.To select orders that are not placed today.To select employees who are not on vacation.
The NOT operator is a versatile tool that can be used in a variety of ways to reverse the meaning of a conditional statement in SQL.

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What is the significance of the NOT operator in SQL and how is it used in conditional statements?

Revati S Misra

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