Oleg Broytmann wrote:
>
> Hello!
>
> Another symptom. The query
>
> SELECT cn.date_i, cn.pos_id
> FROM central cn
> WHERE cn.date_i >= current_date - '300 days'::timespan
>
> returns 3156 rows. But this:
>
> SELECT cn.date_i, p.subsec_id, cn.pos_id, p.pos_id
> FROM central cn, shops sh, districts d, positions p
> WHERE cn.date_i >= current_date - '300 days'::timespan
this should return
3156 * count(shops) * count(districts) * count(positions)
which is probably too much for the backend ;(
-----------------------
Hannu