The view collation_character_set_applicability identifies which character set the available collations are applicable to. In PostgreSQL, there is only one character set per database (see explanation in Section 37.7), so this view does not provide much useful information.
collation_character_set_applicability ColumnsColumn Type
Description
collation_catalog sql_identifier
Name of the database containing the collation (always the current database)
collation_schema sql_identifier
Name of the schema containing the collation
collation_name sql_identifier
Name of the default collation
character_set_catalog sql_identifier
Character sets are currently not implemented as schema objects, so this column is null
character_set_schema sql_identifier
Character sets are currently not implemented as schema objects, so this column is null
character_set_name sql_identifier
Name of the character set