How to transfer varchar2 to long raw

hi, I have a question:

I hava a table, such as:

Table: T1
Field:

   ID varchar(38),
   VALUE varchar(4000),

Now I need modify table structure to:
Table: T2
Filed:

   ID varchar(38),
   VALUE long raw

My question is:
As filed "VALUE" had be changed to long raw, how to move old record into new table T2 by SQL, e.g. how to insert a string(such as "Hello World") into long raw filed by pure sql. Received on Wed Aug 30 2006 - 20:55:15 CDT