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;
+----------------------+-------------+------+------+---------+-------+
| 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)
SELECT * FROM `character_sets`;
+--------------------+----------------------+---------------+--------+
| CHARACTER_SET_NAME | DEFAULT_COLLATE_NAME | DESCRIPTION | MAXLEN |
+--------------------+----------------------+---------------+--------+
| utf8 | utf8_bin | UTF-8 Unicode | 3 |
| utf8mb4 | utf8mb4_bin | UTF-8 Unicode | 4 |
| ascii | ascii_bin | US ASCII | 1 |
| latin1 | latin1_bin | Latin1 | 1 |
| binary | binary | binary | 1 |
+--------------------+----------------------+---------------+--------+
5 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_NAME
The default collation name of the character set.DESCRIPTION
The description of the character set.MAXLEN
The maximum length required to store a character in this character set.
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