Subject Re[4]: [firebird-support] Re: Using VIEW (or not)
Author Nando Dessena
Riho-Rene,

RRE> OK, so the problem is not in view.

In fact it's in sorting time and time-to-first-record.

RRE> select distinct currency from v_stat_history where sdate between
RRE> '1.10.2003' and '3.10.2003' and accid=2 order by row
RRE> (9 sec)

Probably two sorts and one duplicate-eliminating pass

RRE> select currency from v_stat_history where sdate between '1.10.2003' and
RRE> '3.10.2003' and accid=2 order by row
RRE> (1.5 sec)

just one sort. See Helen's advice about indexes.

RRE> The statstics and PLAN are exactly the same. Why so big time difference?

Stats don't show sort time, do they?

Ciao
--
Nando mailto:nandod@...