Hello, I'm new here. I have the following problem. I have a database that looks like this (see end of email). Now I want to issue the following query. Select b. * FROM open_auctions o, b bidder WHERE (select b3.INCREASE from bidder b3 where b3.id = (select min (b3a.id) from bidder b3a where b3a.open_auction_id = o.open_auction_id)) * 2 <= (Select b2.INCREASE from bidder b2 where b2.id = (SELECT MAX (b2a.id) from bidder b2a where b2a.open_auction_id = o.open_auction_id)) AND o.open_auction_id = b.open_auction_id; The database crashes. If I divide the query individually and settled it works flawlessly. Other complex query also work. Only in this query crashes the database. Can anyone help me further? I installed MonetDB 11:19:11 64 bits on Redhat. 6 Thanks and Regards Dennis CREATE TABLE closed_auctions ( id int NOT NULL AUTO_INCREMENT, seller varchar(255) NOT NULL, buyer varchar(255) NOT NULL, itemref varchar(255) NOT NULL, price double NOT NULL, date varchar(255) NOT NULL, quantitiy int NOT NULL, type varchar(255) NOT NULL, PRIMARY KEY (id) ); INSERT INTO `open_auctions` (`id`, `open_auction_id`, `initial`, `reserve`, `aktuell`, `privacy`, `itemref`, `seller`, `quantity`, `type`, `start`, `ende`) VALUES (1, 'open_auction0', 210.62, 1540.75, 263.12, 'No', 'item0', 'person11', 1, 'Regular', '02/27/1998', '03/09/1999'), (2, 'open_auction1', 69.64, 398.65, 168.64, '', 'item2', 'person10', 1, 'Featured', '06/14/1998', '02/27/1999'), (3, 'open_auction2', 13.9, 0, 16.9, 'No', 'item3', 'person11', 1, 'Featured', '07/16/2000', '10/22/2000'), (4, 'open_auction3', 17.12, 0, 179.12, '', 'item5', 'person13', 1, 'Featured', '02/01/2001', '07/22/1999'), (5, 'open_auction4', 38.21, 116.91, 219.71, 'No', 'item7', 'person11', 4, 'Regular, Dutch', '08/05/2000', '01/09/1999'), (6, 'open_auction5', 75.95, 174.84, 116.45, 'No', 'item9', 'person7', 1, 'Featured', '01/27/2001', '10/08/1999'), (7, 'open_auction6', 67.27, 0, 77.77, 'Yes', 'item10', 'person14', 1, 'Featured', '12/15/2001', '07/13/1999'), (8, 'open_auction7', 35.53, 133.36, 73.03, 'Yes', 'item12', 'person16', 1, 'Regular', '04/06/2001', '04/11/2000'), (9, 'open_auction8', 92.54, 0, 101.54, '', 'item13', 'person12', 1, 'Regular', '10/20/1998', '02/04/2001'), (10, 'open_auction9', 9.88, 0, 137.38, '', 'item14', 'person10', 1, 'Featured', '06/16/1998', '12/05/2000'), (11, 'open_auction10', 86.28, 0, 239.28, 'Yes', 'item16', 'person8', 1, 'Featured', '06/26/2000', '02/04/1998'), (12, 'open_auction11', 4.12, 24.53, 38.62, '', 'item17', 'person12', 1, 'Regular', '11/03/1999', '03/02/2000'); CREATE TABLE bidder ( id int NOT NULL AUTO_INCREMENT, open_auction_id varchar(255) NOT NULL, date varchar(255) NOT NULL, time varchar(255) NOT NULL, personref varchar(255) NOT NULL, increase double NOT NULL, PRIMARY KEY (id) ); -- -- Daten für Tabelle `bidder` -- INSERT INTO `bidder` (`id`, `open_auction_id`, `date`, `time`, `personref`, `increase`) VALUES (1, 'open_auction0', '06/13/2001', '13:16:15', 'person0', 18), (2, 'open_auction0', '09/18/2000', '11:29:44', 'person23', 12), (3, 'open_auction0', '01/07/1998', '10:23:59', 'person14', 18), (4, 'open_auction0', '07/10/2001', '14:00:39', 'person16', 4.5), (5, 'open_auction1', '11/12/1998', '11:23:38', 'person20', 4.5), (6, 'open_auction1', '10/02/2000', '22:48:00', 'person4', 15), (7, 'open_auction1', '12/04/1998', '22:29:38', 'person23', 1.5), (8, 'open_auction1', '06/22/1999', '12:43:47', 'person19', 15), (9, 'open_auction1', '12/02/2001', '13:38:51', 'person15', 45), (10, 'open_auction1', '11/12/2001', '04:50:27', 'person9', 6), (11, 'open_auction1', '05/21/2001', '08:02:16', 'person5', 12), (12, 'open_auction2', '12/04/2000', '14:03:16', 'person5', 3), (13, 'open_auction3', '09/03/2000', '22:45:30', 'person8', 10.5), (14, 'open_auction3', '08/18/1998', '17:13:40', 'person22', 25.5), (15, 'open_auction3', '06/05/1998', '11:57:56', 'person19', 16.5), (16, 'open_auction3', '09/20/1999', '00:39:18', 'person5', 46.5), (17, 'open_auction3', '10/03/2001', '01:08:59', 'person23', 58.5), (18, 'open_auction3', '02/17/2001', '07:13:32', 'person20', 4.5), (19, 'open_auction4', '10/19/1998', '09:00:31', 'person7', 33), (20, 'open_auction4', '03/11/2001', '01:59:02', 'person8', 9), (21, 'open_auction4', '04/16/2001', '23:37:09', 'person8', 6), (22, 'open_auction4', '03/06/1999', '12:19:57', 'person5', 4.5), (23, 'open_auction4', '02/01/2000', '09:37:51', 'person21', 18), (24, 'open_auction4', '01/09/1999', '19:31:44', 'person1', 31.5), (25, 'open_auction4', '11/11/2001', '05:24:08', 'person16', 27), (26, 'open_auction4', '11/19/1998', '16:16:17', 'person10', 7.5), (27, 'open_auction4', '04/05/1999', '00:37:15', 'person17', 7.5), (28, 'open_auction4', '09/14/1999', '12:00:43', 'person12', 37.5), (29, 'open_auction5', '07/07/2000', '08:53:00', 'person15', 6), (30, 'open_auction5', '08/06/2001', '10:16:15', 'person13', 4.5), (31, 'open_auction5', '08/23/1999', '08:26:06', 'person17', 30), (32, 'open_auction6', '01/23/2000', '17:14:42', 'person1', 10.5), (33, 'open_auction7', '10/14/1999', '14:39:18', 'person16', 27), (34, 'open_auction7', '05/19/1999', '23:51:16', 'person14', 9), (35, 'open_auction7', '03/27/1999', '19:14:39', 'person23', 1.5), (36, 'open_auction8', '04/26/2001', '00:41:04', 'person12', 9), (37, 'open_auction9', '04/03/1999', '19:09:46', 'person22', 18), (38, 'open_auction9', '01/21/1999', '08:14:44', 'person19', 19.5), (39, 'open_auction9', '11/24/1999', '02:12:12', 'person11', 12), (40, 'open_auction9', '01/07/2001', '05:33:55', 'person7', 9), (41, 'open_auction9', '07/28/2000', '00:57:52', 'person16', 16.5), (42, 'open_auction9', '01/28/2000', '20:24:02', 'person23', 1.5), (43, 'open_auction9', '05/13/2001', '02:45:46', 'person13', 1.5), (44, 'open_auction9', '12/06/2000', '15:18:07', 'person21', 24), (45, 'open_auction9', '08/16/1998', '09:27:27', 'person14', 3), (46, 'open_auction9', '06/18/2001', '19:57:53', 'person7', 3), (47, 'open_auction9', '12/13/2001', '09:01:23', 'person2', 12), (48, 'open_auction9', '03/18/2001', '08:59:02', 'person13', 7.5), (49, 'open_auction10', '08/14/1998', '16:33:46', 'person23', 33), (50, 'open_auction10', '03/24/1998', '11:45:48', 'person3', 1.5), (51, 'open_auction10', '10/08/1998', '06:20:35', 'person1', 45), (52, 'open_auction10', '01/12/1998', '21:43:02', 'person3', 15), (53, 'open_auction10', '03/02/2001', '20:20:33', 'person0', 9), (54, 'open_auction10', '03/01/2000', '10:08:07', 'person23', 10.5), (55, 'open_auction10', '07/19/2001', '00:50:29', 'person6', 9), (56, 'open_auction10', '10/04/2001', '00:58:25', 'person4', 3), (57, 'open_auction10', '11/27/1998', '00:15:23', 'person21', 27), (58, 'open_auction11', '05/16/1998', '15:08:01', 'person1', 15), (59, 'open_auction11', '05/08/2000', '06:44:20', 'person3', 4.5), (60, 'open_auction11', '10/22/2001', '15:34:49', 'person4', 15); 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