presto-record-decoder/src/main/java/io/prestosql/decoder/raw/RawColumnDecoder.java/RawColumnDecoder/isSupportedType
class RawColumnDecoder:    private static boolean isSupportedType(Type type)
    {
        if (isVarcharType(type)) {
            return true;
        }
        if (ImmutableList.of(BIGINT, INTEGER, SMALLINT, TINYINT, BOOLEAN, DOUBLE).contains(type)) {
            return true;
        }
        return false;
    }