SHOW COLLATION
    [LIKE 'pattern' | WHERE expr]

该语句列出服务器支持的排序规则。默认情况下，SHOW COLLATION的输出包括所有可用排序规则。LIKE子句，如果存在，指示要匹配的排序规则名称。WHERE子句可以用于选择行，以使用更通用的条件，如第28.8节，“SHOW语句的扩展”中讨论的那样。例如：

mysql> SHOW COLLATION WHERE Charset = 'latin1';
+-------------------+---------+----+---------+----------+---------+
| Collation         | Charset | Id | Default | Compiled | Sortlen |
+-------------------+---------+----+---------+----------+---------+
| latin1_german1_ci | latin1  |  5 |         | Yes      |       1 |
| latin1_swedish_ci | latin1  |  8 | Yes     | Yes      |       1 |
| latin1_danish_ci  | latin1  | 15 |         | Yes      |       1 |
| latin1_german2_ci | latin1  | 31 |         | Yes      |       2 |
| latin1_bin        | latin1  | 47 |         | Yes      |       1 |
| latin1_general_ci | latin1  | 48 |         | Yes      |       1 |
| latin1_general_cs | latin1  | 49 |         | Yes      |       1 |
| latin1_spanish_ci | latin1  | 94 |         | Yes      |       1 |
+-------------------+---------+----+---------+----------+---------+

SHOW COLLATION的输出具有这些列：

要查看每个字符集的默认排序规则，请使用以下语句。默认是保留字，因此要将其用作标识符，需要将其引起来：

mysql> SHOW COLLATION WHERE `Default` = 'Yes';
+---------------------+----------+----+---------+----------+---------+
| Collation           | Charset  | Id | Default | Compiled | Sortlen |
+---------------------+----------+----+---------+----------+---------+
| big5_chinese_ci     | big5     |  1 | Yes     | Yes      |       1 |
| dec8_swedish_ci     | dec8     |  3 | Yes     | Yes      |       1 |
| cp850_general_ci    | cp850    |  4 | Yes     | Yes      |       1 |
| hp8_english_ci      | hp8      |  6 | Yes     | Yes      |       1 |
| koi8r_general_ci    | koi8r    |  7 | Yes     | Yes      |       1 |
| latin1_swedish_ci   | latin1   |  8 | Yes     | Yes      |       1 |
...

排序规则信息也可以从INFORMATION_SCHEMA COLLATIONS表中获取。见第28.3.6节，“INFORMATION_SCHEMA COLLATIONS 表”。