SQL & PL/SQL :: Move Data From Varray Column To A Table

I have to move the data from a Varray column to a table.

Lets say I have created a Varray as described below,

create or replace TYPE "BT_TYPE" AS OBJECT (
R_ID NUMBER,
P_EVENT VARCHAR2(100))
/

create or replace TYPE "BT_VR" AS varray(20) of BT_TYPE
/

And I have a used this Varray as the column datatype in table

Create table BT_MASTER(
BT_ID_SEQNUMBER(5),
BT_DETAILBT_VR);

And this table contains data.

I want to move the data in the VARRAY column BT_DETAIL to another table. I have create a staging table BT_STG which contains a surrogate key column and the columns from the VARRAY. I am creating this staging table at run time.

Create Table BT_STG(
BT_STG_ID NUMBER(5),
R_ID NUMBER(5),
P_EVENT VARCHAR2(100)
);

One way to create this staging table is to query the data dictionary views to get the VARRAY object's columns, datatyeps and create it.

Is there any other simpler way by which I could create a table similar to a VARRAY/Object?

Something similar to,

create table test as select * from BT_VR