What is not operator in MySQL?

What is not operator in SQL?

The SQL NOT operator NOT is a logical operator in SQL that you can put before any conditional statement to select rows for which that statement is false. In the above case, you can see that results for which year_rank is equal to 2 or 3 are not included. NOT is commonly used with LIKE .

What is not in operator?

In Boolean algebra, the NOT operator is a Boolean operator that returns TRUE or 1 when the operand is FALSE or 0, and returns FALSE or 0 when the operand is TRUE or 1. Essentially, the operator reverses the logical value associated with the expression on which it operates.

What does != Mean in MySQL?

not equal to (<>, !=) operator. MySQL Not equal is used to return a set of rows (from a table) after making sure that two expressions placed on either side of the NOT EQUAL TO (<>) operator are not equal. Syntax: <>, !=

Can you use != In MySQL?

In MySQL, you can use the <> or != operators to test for inequality in a query. For example, we could test for inequality using the <> operator, as follows: SELECT * FROM contacts WHERE last_name <> 'Johnson';