How to use MySql escape

This article mainly explains "how to use MySql escape", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let Xiaobian take you to learn how to use MySql escape!

MySQL escape

An escape character is intended to begin a sequence of characters such that the sequence of characters at the beginning of the escape character has a different semantic meaning than if the sequence appeared alone.

In sql like statements, for example

select * from user where username like '%nihao%'，select * from user where username like '_nihao',

where % is wildcards and_is wildcards

If you really want to query for % _in username, you need to make them stop being wildcards.

Escape % _in like, take_for example,

select * from user where username like '_nihao',

After escape: select * from user where username like '/_nihao' escape '/', meaning that_after/is not used as wildcard

#Case 3: Query employee name whose second character is_

SELECT last_nameFROM employeesWHERE last_name LIKE '_$_%' ESCAPE '$'; At this point, I believe that everyone has a deeper understanding of "how to use MySql escape", may wish to actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!