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;
The output is as follows:
+--------------------+-------------+------+------+---------+-------+
| 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)
View the collation mapping for the utf8mb4 character set in the COLLATION_CHARACTER_SET_APPLICABILITY table:
SELECT * FROM COLLATION_CHARACTER_SET_APPLICABILITY WHERE character_set_name='utf8mb4';
The output is as follows:
+--------------------+--------------------+
| COLLATION_NAME | CHARACTER_SET_NAME |
+--------------------+--------------------+
| utf8mb4_bin | utf8mb4 |
| utf8mb4_general_ci | utf8mb4 |
| utf8mb4_unicode_ci | utf8mb4 |
+--------------------+--------------------+
3 rows 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.