Backticks are usually placed below the Esc key, together with ~. It is a symbol introduced to distinguish MySQL's reserved words from ordinary characters. create table desc reports an error create table `desc` succeeds
Generally, when we build a table, we will add backticks to the table name and library name to ensure the execution of the statement.
single quote ', double quote "
In standard SQL, single quotes are used for strings.
If the string itself also includes single quotes, use two single quotes (note, not double quotes, double quotes in the string do not need additional escaping).
MySQL's extension to SQL allows the use of both single and double quotes.