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Russian Progress User Group Форум российских пользователей продуктов Progress Software Corp. 2008-02-07T13:23:38+03:00 https://forum.csbi-progress.ru/feed.php?f=12&t=923 2008-02-07T13:23:38+03:00 2008-02-07T13:23:38+03:00 https://forum.csbi-progress.ru/viewtopic.php?t=923&p=8205#p8205 <![CDATA[Index]]> Статистика: Добавлено webber — 07 фев 2008, 13:23

]]> 2008-01-31T22:08:29+03:00 2008-01-31T22:08:29+03:00 https://forum.csbi-progress.ru/viewtopic.php?t=923&p=8166#p8166 <![CDATA[Index]]> Статистика: Добавлено dmitri — 31 янв 2008, 22:08

]]> 2008-01-31T10:05:56+03:00 2008-01-31T10:05:56+03:00 https://forum.csbi-progress.ru/viewtopic.php?t=923&p=8161#p8161 <![CDATA[Re: Index]]> Статистика: Добавлено George — 31 янв 2008, 10:05

]]> 2008-01-31T10:00:27+03:00 2008-01-31T10:00:27+03:00 https://forum.csbi-progress.ru/viewtopic.php?t=923&p=8160#p8160 <![CDATA[Re: Index]]> Статистика: Добавлено George — 31 янв 2008, 10:00

]]> 2008-01-31T07:32:48+03:00 2008-01-31T07:32:48+03:00 https://forum.csbi-progress.ru/viewtopic.php?t=923&p=8159#p8159 <![CDATA[Index]]> Статистика: Добавлено Старожыл — 31 янв 2008, 07:32

]]> 2006-08-15T09:32:19+03:00 2006-08-15T09:32:19+03:00 https://forum.csbi-progress.ru/viewtopic.php?t=923&p=4433#p4433 <![CDATA[Re: Index]]> Статистика: Добавлено bulklodd — 15 авг 2006, 09:32

]]> 2006-08-15T07:34:12+03:00 2006-08-15T07:34:12+03:00 https://forum.csbi-progress.ru/viewtopic.php?t=923&p=4430#p4430 <![CDATA[Index]]> Это хрустно. Поэтому начинаю готовить статью. 8)

Первый вопрос такой - "несколько индексов за раз?" :o

Прогресс сам может подцепить более одного индекса в выборке, а программист посредствам use-index может указать только один индекс?

Второй вопрос "составные индексы - зло?" :sad:

На много ли составные индексы дают больше выигрыша, чем несколько одинарных?

ведь, IMHO
1) содержать и пересчитывать составной индекс - более ресурсоёмкое занятие, чем содержание несколько простых?
2) несколько простых индексов предоставят большую гибкость их использования при составлении запросов.
=> IMHO, составные индексы должны быть крайне редки...

Статистика: Добавлено Evgeniy — 15 авг 2006, 07:34

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