
 Description
 
 Takes an unquoted identifier (schema name, table name, etc.) and
 returns the identifier quoted with backticks.
 
 Parameters
 
 in_identifier (TEXT):
 The identifier to quote.
 
 Returns
 
 TEXT
 
 Example
 
 mysql> SELECT sys.quote_identifier('my_identifier') AS Identifier;
 +-----------------+
 | Identifier      |
 +-----------------+
 | `my_identifier` |
 +-----------------+
 1 row in set (0.00 sec)
 
 mysql> SELECT sys.quote_identifier('my`idenfier') AS Identifier;
 +----------------+
 | Identifier     |
 +----------------+
 | `my``idenfier` |
 +----------------+
 1 row in set (0.00 sec)
 