Dynamic nametable of a select query

Question

Hi all!
I have a question for you.
I have a table called "Temp1" with column (nameTable varchar(300), id integer).
What i must do is make a select from the table named as contained in the field nameTable of table Temp1.
something like
select * from (VALUEOF(select nameTable from temp1 where id = 1));
can u help me giving a suggest
or a documentation were i can find info about this stuff?
thank u for the answer
Francesco

Answer 1

create table temp (id number, tabname varchar2(30))
drop table test1;
create table test1 (id number, col varchar2(30))
drop table test2;
create table test2(id number, col varchar2(30))
insert into temp values (1,'TEST1');
insert into temp values (2,'Test2');
insert into test1 values (1,'TEST1_colvalue');
insert into test2 values (2,'TEST2_colvalue');
commit;
select * from temp;
select * from test1 ;
select * from test2;
DECLARE
v_sql varchar2 (200);
TYPE Tab_Typ IS TABLE OF TEMP%ROWTYPE;
TABRec Tab_Typ;
TYPE TTab_Typ IS TABLE OF TEST1%ROWTYPE;
TESTRec TTab_Typ;
BEGIN
v_sql := 'SELECT * FROM TEMP ';
DBMS_OUTPUT.put_line ('Program Begin');
EXECUTE IMMEDIATE v_sql BULK COLLECT INTO TABRec;
FOR i IN 1 .. TABREC.COUNT
LOOP
DBMS_OUTPUT.put_line ('Temp id =' || TABREC (i).Id);
v_Sql := 'select * From ' || TABREC (i).TABNAME;
DBMS_OUTPUT.put_line (v_sql);
EXECUTE IMMEDIATE v_Sql BULK COLLECT INTO TESTRec;
FOR i IN 1 .. TESTRec.COUNT
LOOP
DBMS_OUTPUT.put_line (TESTRec (i).col);
END LOOP;
END LOOP;
END;
Edited by: ranjus on Oct 16, 2008 2:20 PM
Here is the tips for the same.
http://www.oracle.com/technology/oramag/code/tips2005/042505.html