CHARACTER_SETS
The CHARACTER_SETS table provides information about character sets. Currently, TiDB only supports some of the character sets.
USE INFORMATION_SCHEMA;
DESC CHARACTER_SETS;
The output is as follows:
+----------------------+-------------+------+------+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------------------+-------------+------+------+---------+-------+
| CHARACTER_SET_NAME | varchar(32) | YES | | NULL | |
| DEFAULT_COLLATE_NAME | varchar(32) | YES | | NULL | |
| DESCRIPTION | varchar(60) | YES | | NULL | |
| MAXLEN | bigint(3) | YES | | NULL | |
+----------------------+-------------+------+------+---------+-------+
4 rows in set (0.00 sec)
View the CHARACTER_SETS table:
SELECT * FROM `CHARACTER_SETS`;
The output is as follows:
+--------------------+----------------------+-------------------------------------+--------+
| CHARACTER_SET_NAME | DEFAULT_COLLATE_NAME | DESCRIPTION | MAXLEN |
+--------------------+----------------------+-------------------------------------+--------+
| ascii | ascii_bin | US ASCII | 1 |
| binary | binary | binary | 1 |
| gbk | gbk_chinese_ci | Chinese Internal Code Specification | 2 |
| latin1 | latin1_bin | Latin1 | 1 |
| utf8 | utf8_bin | UTF-8 Unicode | 3 |
| utf8mb4 | utf8mb4_bin | UTF-8 Unicode | 4 |
+--------------------+----------------------+-------------------------------------+--------+
6 rows in set (0.00 sec)
The description of columns in the CHARACTER_SETS table is as follows:
CHARACTER_SET_NAME: The name of the character set.DEFAULT_COLLATE_NAMEThe default collation name of the character set.DESCRIPTIONThe description of the character set.MAXLENThe maximum length required to store a character in this character set.