Use fieldname into the tablename of a select-statement

Question

I have made the next table :
SQL> desc ttcafo001120;
Name Null? Type
T$GCMP NOT NULL NUMBER
T$CUNO NOT NULL CHAR(6)
T$NAMA NOT NULL CHAR(35)
where t$gcmp is always a number of 3 postions.
I want to make a program that look like this :
When t$gcmp = 120 :
update ttcafo001120
set ttcafo001120.t$nama = (select ttccom010120.t$nama
from ttccom010120 where
ttcafo001120.t$cuno=ttccom010120.t$cuno)
where ttcafo001120.t$cuno in
(select t$cuno from ttccom010120)
and ttcafo001120.t$nama=' ';
and when t$gcmp = 554 then it should be :
update ttcafo001120
set ttcafo001120.t$nama = (select ttccom010554.t$nama
from ttccom010554 where
ttcafo001120.t$cuno=ttccom010554.t$cuno)
where ttcafo001120.t$cuno in
(select t$cuno from ttccom010554)
and ttcafo001120.t$nama=' ';
So the last 3 positions of the tablename in this program should be variable and consist of the value of tcafo001120.t$gcmp. Is this possible ?

Answer 1

Use 'execute immediate' when you want to use dynamic sql. E.g.:
table_no := '1055';
stmt := 'insert into table'||table_no||' values (''X'',''Y'');';
execute immediate stmt;