SHOW {CHARACTER SET | CHARSET}
    [LIKE 'pattern' | WHERE expr]
        The SHOW CHARACTER SET statement
        shows all available character sets. The
        LIKE clause, if present, indicates
        which character set names to match. The WHERE
        clause can be given to select rows using more general
        conditions, as discussed in Section 28.8, “Extensions to SHOW Statements”. For
        example:
      
mysql> SHOW CHARACTER SET LIKE 'latin%';
+---------+-----------------------------+-------------------+--------+
| Charset | Description                 | Default collation | Maxlen |
+---------+-----------------------------+-------------------+--------+
| latin1  | cp1252 West European        | latin1_swedish_ci |      1 |
| latin2  | ISO 8859-2 Central European | latin2_general_ci |      1 |
| latin5  | ISO 8859-9 Turkish          | latin5_turkish_ci |      1 |
| latin7  | ISO 8859-13 Baltic          | latin7_general_ci |      1 |
+---------+-----------------------------+-------------------+--------+
        SHOW CHARACTER SET output has
        these columns:
CharsetThe character set name.
DescriptionA description of the character set.
Default collationThe default collation for the character set.
MaxlenThe maximum number of bytes required to store one character.
        The filename character set is for internal
        use only; consequently, SHOW CHARACTER
        SET does not display it.
      
        Character set information is also available from the
        INFORMATION_SCHEMA
        CHARACTER_SETS table.