Re: [PATCHES] [SQL] 16 parameter limit
От | Bruce Momjian |
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Тема | Re: [PATCHES] [SQL] 16 parameter limit |
Дата | |
Msg-id | 200204160344.g3G3iGg04889@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [PATCHES] [SQL] 16 parameter limit (Alvaro Herrera <alvherre@atentus.com>) |
Ответы |
Re: [PATCHES] [SQL] 16 parameter limit
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Список | pgsql-hackers |
Alvaro Herrera wrote: > (Tom Lane says both SQL92 and SQL99 specify 128 as the maximun > identifier length) > > Anyway, how does one measure the perfomance impact of such a change? > By merely changing the constant definition, or also by actually using > long identifiers? I can do that if it's of any help, for various values > perhaps. I think I would measure disk size change in a newly created database, and run regression for various values. That uses a lot of identifier lookups. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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