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This article introduces the knowledge of "how to use not in mysql". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

In mysql, not is used to determine whether an expression is true or false, it is a logical operator in mysql, the syntax is "select not expression", if the expression is true, the result returns 1, if the expression is false, the result returns 0.

The operating environment of this tutorial: windows10 system, mysql8.0.22 version, Dell G3 computer.

What is the use of not in mysql

Not is a logical operator in mysql

Logical operators are used to determine whether an expression is true or false. If the expression is true, the result returns 1. If the expression is false, the result returns 0.

It is commonly used to detect the existence of database objects.

Examples are as follows:

Mysql > select not 1 not + | not 1 | +-+ | 0 | +-+ mysql > select!! 0 |! 0 | +-+ | 1 | +-+ the content of "how to use not in mysql" ends here. Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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