Not Equal - MySQL Conditions

In MySQL, the "not equal" operator is used to compare two values and evaluate whether they are not equal to each other. In this tutorial, we'll discuss how to use the not equal operator in MySQL conditions.

Syntax

The syntax for the not equal operator in MySQL is as follows:

SELECT column1, column2, ...
FROM table_name
WHERE column1 != value;

In this syntax, the "!=" operator is used to check whether column1 is not equal to the specified value.

Example

Let's say we have a table called "employees" with columns "id", "name", and "age". Here's an example of how to use the not equal operator to select all employees who are not 30 years old:

SELECT *
FROM employees
WHERE age != 30;

Output

When we run the example code above, we'll get a table with all employees who are not 30 years old.

Explanation

In the example above, we used the not equal operator ("!=") to select all employees from the "employees" table whose age is not equal to 30. This means that all employees whose age is not 30 will be included in the output.

Use

The not equal operator is useful for selecting rows that do not match a specific value or set of values. It can also be combined with other operators (such as "and", "or", "not") to create more complex conditions.

Important Points

• The not equal operator ("!=") is used to check whether two values are not equal to each other.
• The not equal operator can be used in MySQL conditions to select rows that do not match a specific value or set of values.
• The not equal operator can be combined with other operators (such as "and", "or", "not") to create more complex conditions.

Summary

In this tutorial, we discussed how to use the not equal operator in MySQL conditions. We covered the syntax, example, output, explanation, use, and important points of the not equal operator in MySQL. With this knowledge, you can now use the not equal operator to filter rows in your MySQL tables based on specific criteria.