All MySQL error codes

MySQL error code

MySQL error 1115

MySQL server error 1115 is ER_UNKNOWN_CHARACTER_SET, reported with SQLSTATE 42000.

Unknown character set: '%s'

Error	1115
Name	ER_UNKNOWN_CHARACTER_SET
SQLSTATE	42000
Group	Server errors

In other databases

PostgreSQL 42000 syntax_error_or_access_rule_violation

Source: MySQL 8.4 Error Reference