Populate & Retrieve in one Select - problems !!!

Question

Hi There.
What I would like to be able to do is populate a row in a table (via a function) and retrieve that row all in one Select statement. Unfortunately I don't get any data returned from the Select. I have in mind something like the following:-
SELECT * FROM MY_TABLE
WHERE MY_TABLE.UNIQUEID = F_MY_FUNCTION('MY KEY INFO');
Where MY_TABLE is defined say like :-
CREATE TABLE MY_TABLE (
UNIQUEID NUMBER NOT NULL,
NUMB_FIELD NUMBER,
CHAR_FIELD VARCHAR2(100),
CHAR_FIELD2 VARCHAR2(100)
The function would look something like this :-
CREATE OR REPLACE Function F_MY_FUNCTION(sKeyInfo VarChar2)
RETURN Number IS
PRAGMA AUTONOMOUS_TRANSACTION;
nUniqueID Number := 0;
nNumb_field Number :=
sChar_field VarChar2(100) := '';
sChar_field2 VarChar2(100) := '';
begin
-- Retrieve Data via middleware (simulate)
nNumb_field := 2734;
sChar_field := 'The quick brown fox';
sChar_field2 := 'jumps over the lazy dog.';
-- Insert Data into Table
-- 1st get the unique id from the sequence
Select SEQ_SG.NextVal into nUniqueID from dual;
-- Now insert data into row in table
Insert Into MY_TABLE (
UniqueID, Numb_Field, Char_field, Char_field2)
     Values (nUniqueID, nNumb_Field, sChar_field, sChar_field2);
Commit;
-- Return Row Id of Table to use in Select statement
Return nUniqueID;
end;
It appears to run out of sequence. Ie. The correct 'uniqueid' is being returned from the function but the results are not yet available for the 'Select' statement. When you look at what's in the table the function has populated the rows correctly, but for some reason the 'select' statement can't seem to see the results immediately.
Help - what am I doing wrong?
PS. Any help would be appreciated.

Answer 1

How about this approach?
SQL> CREATE TABLE at1 (col1 number primary key, col2 varchar2(30));
Table created.
SQL> CREATE SEQUENCE as1;
Sequence created.
SQL> CREATE OR REPLACE TRIGGER at1_bir BEFORE INSERT ON at1 fOR EACH ROW
  2  DECLARE
  3     ln number;
  4  BEGIN
  5     SELECT as1.nextval INTO ln
  6     FROM   dual;
  7     :NEW.col1 := ln;
  8  END;
  9  /
Trigger created.
SQL> var x number
SQL> INSERT INTO at1 (col2) VALUES ('APC')
  2  RETURNING col1 INTO :x
  3  /
1 row created.
SQL> print x
         X
         1Cheers, APC