### - u -

- UAH : IsoCurrency
- UNDEFINED_COLUMN : PostgresError
- UNDEFINED_FILE : PostgresError
- UNDEFINED_FUNCTION : PostgresError
- UNDEFINED_OBJECT : PostgresError
- UNDEFINED_PARAMETER : PostgresError
- UNDEFINED_TABLE : PostgresError
- UNION : CombineQuery
- UNION_ALL : CombineQuery
- UNIQUE_VIOLATION : PostgresError
- UNLOCK : HttpMethod
- UNSIGNED_FLAG : LightMetaProperty
- UNSIGNED_MAX : PrimitiveInteger , TypesUtils
- UNSIGNED_SMALL_MAX : PrimitiveInteger
- UNTERMINATED_C_STRING : PostgresError
- UNTRANSLATABLE_CHARACTER : PostgresError
- URL_PATTERN : PrimitiveString
- USD : IsoCurrency