Dynamic FROM variable

Question

I need to do something like the following in a PL/SQL package:
select from_table
into my_var
from ref_table
where id = 123
select my_text
into my_var2
from :my_var
where id = 456
Basically, I need to be able to retrieve my FROM table via the first select, and then use that retrieved table name (in the my_var variable) in the second select's FROM clause (i.e. a dynamic FROM). However, I am not sure at all if this will even work in a proc, and if so, exactly how to code it. Any help? Thanks in advance.
Tom

Answer 1

Since I don't have your table structures, I just made up a short example on my own:
DECLARE
my_var  VARCHAR2(30);
my_var2 NUMBER;
v_sql   VARCHAR2(255);
BEGIN
SELECT table_name from_table
   INTO my_var
   FROM user_tables ref_table
   WHERE ROWNUM < 2;
--   WHERE id = 123
v_sql := 'SELECT Count(*) FROM ' || my_var;
--  v_sql := 'SELECT my_text FROM ' || my_var || ' WHERE id = 456';
EXECUTE IMMEDIATE v_sql INTO my_var2;
dbms_output.put_line('my_var: ' || my_var || ' my_var2: ' || my_var2);
END;C.
Message was edited by:
cd