Display Ids in one row

Question

Hi I need to avoid extracting the Ids multiple times. That is display first Id for the receipt_no as Primary Id and display the next ocurring ones as associate Ids in one line. There could be more than one associate Ids with one receipt. Any help appreciated.
Sample Query as below:
SELECT DISTINCT gift_id,receipt, asssociate_donor_id, associate_donor
from g2
LEFT OUTER JOIN (SELECT DISTINCT gift_id asssociate_donor_id
,receipt_number
,e2.name AS associate_donor
FROM X
JOIN advance.entity e2 ON (e2.id_number = gift_donor_id)
WHERE
AND receipt_date >=
to_date('01/01/2000'
,'dd/mm/yyyy')) g4 ON (g2.gift_id !=
asssociate_donor_id AND
g2.receipt =
g4.receipt_number )
Sample table
Id     receipt_no     cash
1     101          $100
2     101          $100
3     102          100
Sample Expected Result:
1, 101, 2, Mark
3, 102
Many Thanks

Answer 1

You didn't really provide enough data to arrive at your expected output, so I took the liberty of creating some. If my data do not match yours, perhaps you'll provide yours and we can give you a better answer....
WITH receipts AS
           ( SELECT 1 gift_id, 101 receipt_id, 201 gift_donor_id, 100 amt FROM DUAL
   UNION ALL SELECT 2, 101, 202, 100 FROM DUAL
   UNION ALL SELECT 3, 102, 203, 100 FROM DUAL )
  , donors AS ( SELECT 201 AS donor_id, 'Matthew' donor_name FROM DUAL
      UNION ALL SELECT 202, 'Mark' FROM DUAL
      UNION ALL SELECT 203, 'Luke' FROM DUAL)
, g2 AS ( SELECT receipts.*, row_number() OVER ( PARTITION BY receipt_id ORDER BY gift_id ) gift_ordering
          FROM receipts )
, donations as ( SELECT gift_id, receipt_id
                 FROM g2
                 WHERE gift_ordering = 1 )
, assocs AS ( SELECT receipt_id , donor_name , COUNT(*) assoc_cnt
                 FROM g2 JOIN donors ON ( gift_donor_id = donor_id )
                 WHERE gift_ordering > 1
                 GROUP BY receipt_id , donor_name)
SELECT donations.gift_id
     , donations.receipt_id
     , assocs.assoc_cnt + 1 total_donors_on_receipt
     /* will be NULL if only one donor */
     , assocs.donor_name
FROM donations
  LEFT JOIN assocs ON ( donations.receipt_id  = assocs.receipt_id )And the output...
   GIFT_ID RECEIPT_ID TOTAL_DONORS_ON_RECEIPT DONOR_N
         1        101                       2 Mark
         3        102
2 rows selected.I hope this helps, or at least points you in the right direction.