information_schema.collation_character_set_applicability.*

show items implemented by
relation column mysqlmariadbtidbpostgrescockroachdbmssql
collation_character_set_applicability  
character_set_catalog unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: unsupported
character_set_name VARCHAR NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: VARCHAR(32) NOT NULL: SQL_IDENTIFIER: SQL_IDENTIFIER NULL: unsupported
character_set_schema unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: unsupported
collation_catalog unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: unsupported
collation_name VARCHAR NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: VARCHAR(32) NOT NULL: SQL_IDENTIFIER: SQL_IDENTIFIER NULL: unsupported
collation_schema unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: unsupported