Re: optimize query with a maximum(date) extraction
От
Pavel Stehule
Тема
Re: optimize query with a maximum(date) extraction
Дата
Msg-id
162867790709050548l3e1fd155g40b745f2ae42834e@mail.gmail.com
Ответ на
Re: optimize query with a maximum(date) extraction (Peter Childs)
Список
Дерево обсуждения
FW: optimize query with a maximum(date) extraction "Gregory Williamson" <Gregory.Williamson@digitalglobe.com>
> > why not > > select id, > min(the_date) as min_date, > max(the_date) as max_date > from my_table group by id; > > Since 8.0 or was it earlier this will use an index should a reasonable one > exist. without any limits, seq scan is optimal. Regards Pavel Stehule
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