我总是看SHOW CREATE TABLE mydatabase。mytable。

对于数据库，似乎需要查看SELECT DEFAULT_CHARACTER_SET_NAME FROM information_schema.SCHEMATA。

表:

SHOW TABLE STATUS将列出所有的表。

使用过滤:

SHOW TABLE STATUS where name like 'table_123';

对于表和列:

show create table your_table_name

数据库:

USE your_database_name;
show variables like "character_set_database";
-- or:
-- show variables like "collation_database";

参考本页。查阅MySQL手册

我是这么做的——

对于模式(或数据库-它们是同义词):

SELECT default_character_set_name FROM information_schema.SCHEMATA 
WHERE schema_name = "schemaname";

表:

SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
       information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA
WHERE CCSA.collation_name = T.table_collation
  AND T.table_schema = "schemaname"
  AND T.table_name = "tablename";

列:

SELECT character_set_name FROM information_schema.`COLUMNS` 
WHERE table_schema = "schemaname"
  AND table_name = "tablename"
  AND column_name = "columnname";

列:

SHOW FULL COLUMNS FROM table_name;

SELECT TABLE_SCHEMA,
       TABLE_NAME,
       CCSA.CHARACTER_SET_NAME AS DEFAULT_CHAR_SET,
       COLUMN_NAME,
       COLUMN_TYPE,
       C.CHARACTER_SET_NAME
  FROM information_schema.TABLES AS T
  JOIN information_schema.COLUMNS AS C USING (TABLE_SCHEMA, TABLE_NAME)
  JOIN information_schema.COLLATION_CHARACTER_SET_APPLICABILITY AS CCSA
       ON (T.TABLE_COLLATION = CCSA.COLLATION_NAME)
 WHERE TABLE_SCHEMA=SCHEMA()
   AND C.DATA_TYPE IN ('enum', 'varchar', 'char', 'text', 'mediumtext', 'longtext')
 ORDER BY TABLE_SCHEMA,
          TABLE_NAME,
          COLUMN_NAME
;

数据库:

SHOW CREATE DATABASE "DB_NAME_HERE";

在创建数据库(MySQL)时，默认字符集/排序规则总是LATIN，而不是在最初创建数据库时选择了不同的字符集/排序规则

数据库:

只需使用这些命令:

USE db_name;
SELECT @@character_set_database;
-- or:
-- SELECT @@collation_database;

数据库:

SELECT SCHEMA_NAME 'database', default_character_set_name 'charset', DEFAULT_COLLATION_NAME 'collation' FROM information_schema.SCHEMATA;

示例输出:

mysql> SELECT SCHEMA_NAME 'database', default_character_set_name 'charset', DEFAULT_COLLATION_NAME 'collation' FROM information_schema.SCHEMATA;
+----------------------------+---------+--------------------+
| database                   | charset | collation          |
+----------------------------+---------+--------------------+
| information_schema         | utf8    | utf8_general_ci    |
| drupal_demo1               | utf8    | utf8_general_ci    |
| drupal_demo2               | utf8    | utf8_general_ci    |
| drupal_demo3               | utf8    | utf8_general_ci    |
| drupal_demo4               | utf8    | utf8_general_ci    |
| drupal_demo5               | latin1  | latin1_swedish_ci  |

...

+----------------------------+---------+--------------------+
55 rows in set (0.00 sec)

mysql> 

对于服务器上的所有数据库:

mysql> SELECT SCHEMA_NAME 'database', default_character_set_name 'charset', DEFAULT_COLLATION_NAME 'collation' FROM information_schema.SCHEMATA;

输出:

+----------------------------+---------+--------------------+
| database                   | charset | collation          |
+----------------------------+---------+--------------------+
| information_schema         | utf8    | utf8_general_ci    |
| my_database                | latin1  | latin1_swedish_ci  |
...
+----------------------------+---------+--------------------+

对于单个数据库:

mysql> USE my_database;
mysql> show variables like "character_set_database";

输出:

    +----------------------------+---------+
    | Variable_name              |  Value  |
    +----------------------------+---------+
    | character_set_database     |  latin1 | 
    +----------------------------+---------+

获取表的排序规则:

mysql> USE my_database;
mysql> SHOW TABLE STATUS WHERE NAME LIKE 'my_tablename';

OR -将输出创建表的完整SQL语句:

Mysql >创建表my_tablename

获取列的排序规则:

mysql> SHOW FULL COLUMNS FROM my_tablename;

输出:

+---------+--------------+--------------------+ ....
| field   | type         | collation          |
+---------+--------------+--------------------+ ....
| id      | int(10)      | (NULL)             |
| key     | varchar(255) | latin1_swedish_ci  |
| value   | varchar(255) | latin1_swedish_ci  |
+---------+--------------+--------------------+ ....

要查看数据库的默认排序规则:

USE db_name;
SELECT @@character_set_database, @@collation_database;

要查看表格的排序:

SHOW TABLE STATUS where name like 'table_name';

要查看列的排序规则:

SHOW FULL COLUMNS FROM table_name;

查看表的默认字符集

SHOW CREATE TABLE table_name;

正如前面所写的，SHOW FULL COLUMNS应该是获取列信息的首选方法。 缺少的是在不直接到达元数据表的情况下获取字符集的方法:

SHOW FULL COLUMNS FROM my_table WHERE Field = 'my_field'
SHOW COLLATION WHERE Collation = 'collation_you_got'

数据库: 使用db_name;选择@@character_set_database;

显示像'character_set_%'或'collation%'这样的变量

在创建新数据库时，将生成一些必要的表

在“information_schema”中此路径

“列”——>关于列

“表”——>表

例如，如果您需要查看表中的所有列名和类型

SELECT COLUMN_NAME,COLUMN_TYPE FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = 'your_schema_name' AND TABLE_NAME = 'your_table_name'