COLLATION_CHARACTER_SET_APPLICABILITY
The COLLATION_CHARACTER_SET_APPLICABILITY
table maps collations to the applicable character set name. Similar to the COLLATIONS
table, it is included only for compatibility with MySQL.
USE information_schema;
DESC collation_character_set_applicability;
+--------------------+-------------+------+------+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+--------------------+-------------+------+------+---------+-------+
| COLLATION_NAME | varchar(32) | NO | | NULL | |
| CHARACTER_SET_NAME | varchar(32) | NO | | NULL | |
+--------------------+-------------+------+------+---------+-------+
2 rows in set (0.00 sec)
SELECT * FROM collation_character_set_applicability WHERE character_set_name='utf8mb4';
+----------------+--------------------+
| COLLATION_NAME | CHARACTER_SET_NAME |
+----------------+--------------------+
| utf8mb4_bin | utf8mb4 |
+----------------+--------------------+
1 row in set (0.00 sec)
The description of columns in the COLLATION_CHARACTER_SET_APPLICABILITY
table is as follows:
COLLATION_NAME
: The name of the collation.CHARACTER_SET_NAME
: The name of the character set which the collation belongs to.