Using variable as table name in pl/sql query - Is possible?

Question

I am relatively new to PL/SQL and I am trying to create a function that accepts a table name and a rowid as arguments and returns a comma-delimited record string of the values of the table/rowid being passed. The problem is , I cannot code a select stmt as follows
SELECT * FROM v_table_name
WHERE rowid = v_row_id
in PL/SQL. There must be a easy way to approach this.
Thanks for any and all advice.
GC

Answer 1

I don't understand the use of the concat symbol along with the commas and field namesYou just need (if you really need it) to create variable which contains you column separated by comma:
Simple example (in the second case separate variables are used to create
the list of columns):
SQL> declare
  2   rc sys_refcursor;
  3   cols varchar2(200) := 'ename, empno, sal';
  4   tab varchar2(30) := 'emp';
  5  begin
  6   open rc for 'select ' || cols || ' from ' || tab;
  7   close rc;
  8  end;
  9  /
PL/SQL procedure successfully completed.
SQL> declare
  2   rc sys_refcursor;
  3 
  4   ename_col varchar2(10) := 'ename';
  5 
  6   empno_col varchar2(10) := 'empno';
  7 
  8   sal_col varchar2(10) := 'sal';
  9 
10   tab varchar2(30) := 'emp';
11 
12  begin
13 
14   open rc for 'select ' || ename_col || ',' || empno_col || ',' || sal_col ||
15   ' from ' || tab;
16 
17   close rc;
18  end;
19  /
PL/SQL procedure successfully completed.Rgds.