Martin Then trace should be somewhat different as the generated plan changed. Could you send the output  of plan . Niels So put plan infront of the query. -------- Original message -------- From: Martin Schwitalla Date: 18/07/2015 12:52 (GMT+01:00) To: Communication channel for MonetDB users Cc: Niels Nes Subject: Re: MonetDB performance disappointing Hi, sorry that it took so long but I could test the patch and it didn`t seem to change anything. The trace looks the same and the performance didn`t improve. Regards, Martin _______________________________________________ users-list mailing list users-list@monetdb.org https://www.monetdb.org/mailman/listinfo/users-list