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.

  1. USE INFORMATION_SCHEMA;
  2. DESC COLLATION_CHARACTER_SET_APPLICABILITY;

The output is as follows:

  1. +--------------------+-------------+------+------+---------+-------+
  2. | Field              | Type        | Null | Key  | Default | Extra |
  3. +--------------------+-------------+------+------+---------+-------+
  4. | COLLATION_NAME     | varchar(32) | NO   |      | NULL    |       |
  5. | CHARACTER_SET_NAME | varchar(32) | NO   |      | NULL    |       |
  6. +--------------------+-------------+------+------+---------+-------+
  7. 2 rows in set (0.00 sec)

View the collation mapping for the utf8mb4 character set in the COLLATION_CHARACTER_SET_APPLICABILITY table:

  1. SELECT * FROM COLLATION_CHARACTER_SET_APPLICABILITY WHERE character_set_name='utf8mb4';

The output is as follows:

  1. +--------------------+--------------------+
  2. | COLLATION_NAME     | CHARACTER_SET_NAME |
  3. +--------------------+--------------------+
  4. | utf8mb4_bin        | utf8mb4            |
  5. | utf8mb4_general_ci | utf8mb4            |
  6. | utf8mb4_unicode_ci | utf8mb4            |
  7. +--------------------+--------------------+
  8. 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.

See also