Inserting Random Values

Question

Hi there!
just a little question:
I want to insert into a table random values between -2 and 2, which shoul differ for every row. When I'm writing
  FOR n IN nodes LOOP
    FOR EACH n2 IN nodes2 LOOP
      IF (n2.layer_ = n.layer_ +1) THEN
        INSERT INTO nn2_links (lfdnr, sourceid, destid, weight, delta_weight, Zone_)
             VALUES (lfdnr#, n.nodeid, n2.nodeid, dbms_random.value(-2,2), 0, Zone#);
        lfdnr# := lfdnr# +1;
      END if;
    END LOOP;
  END LOOP; I'll get the same value for all records fullfilling the IF-criteria in the middle. What can I do? Must I write another loop?
greetings
~Mel

Answer 1

OP states that she / he would like to have distinct values for every row but instead gets the same value for all rows.
To OP:
Sorry mel, not much help. Can't see the error in your script.
When I put a anonymous block together, it runs smoothly:
SQL> set serveroutput on
SQL> declare
  2  outn number;
  3  cnt number;
  4  begin
  5  cnt := 1;
  6  while cnt <=10 loop
  7     select dbms_random.value(-2,2) into outn from dual;
  8     dbms_output.put_line('Wert: '|| to_char(outn));
  9     cnt := cnt + 1;
10  end loop;
11  end;
12  /
Wert: 1,94760933757912513703045869459081746304
Wert: ,1850733416444459069798272966494986884
Wert: -1,28557676353717597230879638125649445416
Wert: -,20789721958144010481059709280045566588
Wert: -1,46550435548323732535026606603236048092
Wert: -1,48594688953909777344516402506798302304
Wert: -,2162809554864053530960985675499170964
Wert: 1,71049071188915501435899411045229762652
Wert: ,53354523369664937673204584890644358732
Wert: -,96917849158672171927090500710866039384
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