Hi Database-lover evolters! I have a really simple query: SELECT taktar,taktut, "sum(taktut)" as toplam FROM p_taksit WHERE (necessary filters) which returns a single row.: Apr 14 2005 12:00 AM - 95.38 - "sum(taktut)" When I alter the query to: SELECT taktar,taktut, sum(taktut) as toplam FROM p_taksit WHERE (necessary filters) -note that the quotes around sum(taktut) are removed- According to my logic I should get. Apr 14 2005 12:00 AM - 95.38 - 95.38 i.e the aggregate of the first query. However I get around 32000+ rows (the entire table), the returned result is not filtered by (necessary filters) as well. It disregards the date range I give etc etc. It simply returns the entire table. I hear you saying "hey why don't you group by taktut?" Well, definetely it will solve the problem. I just wonder why the db goes mad when I do not aggregate it. Just a technical curiosity. According to ANSI SQL standards it should first apply filters and then aggregate. I guess it acts the other way around. Btw we use Sybase as per the DB. version 18.104.22.168 / 64 Bit. Is it the weirdness of sybase, or am I missing something apparent? Thanks very much in advance. Volkan.