Age: 48 Joined: 25 Jan 2008 Posts: 580 Location: Москва
Posted: Tue May 05, 2009 4:30 pm Post subject:
Это зависит в первую очередь от того, есть ли индексы по полям в условии выбора
Во вторую очередь - от используемой СУБД
В 3-ю очередь - от порядка полей в выбранных индексов.
Далее: от количества записей в таблице, от настроек буферизации в SAP и и СУБД и т.п. _________________ С уважением,
Удав.
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