[dusk]

The character '`' is used to distinguish mysql keywords from field/table names.

For example, the word "update" is a mysql keyword. You CAN NOT use it as a colum name unless you surround it with `.

Код:

CREATE TABLE IF NOT EXISTS example (
    `update` INT NOT NULL DEFAULT '0'
);

This would work, you would have a column named "update". But I'm sure this isn't common practice.