The Firebird 5.0 Language Reference | ALTER CHARACTER SET | Who Can Alter A Character Set

COLLATIONComments

Who Can Alter a Character Set

The ALTER CHARACTER SET statement can be executed by:

Administrators
Users with the ALTER ANY CHARACTER SET privilege

`ALTER CHARACTER SET` Example

Setting the default UNICODE_CI_AI collation for the UTF8 encoding

ALTER CHARACTER SET UTF8
  SET DEFAULT COLLATION UNICODE_CI_AI;