Re: [PERFORMANCE] Beetwen text and varchar field
От | Bruce Momjian |
---|---|
Тема | Re: [PERFORMANCE] Beetwen text and varchar field |
Дата | |
Msg-id | 200601092350.k09NoV022662@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [PERFORMANCE] Beetwen text and varchar field ("Steinar H. Gunderson" <sgunderson@bigfoot.com>) |
Список | pgsql-performance |
See the FAQ. --------------------------------------------------------------------------- Steinar H. Gunderson wrote: > On Mon, Jan 09, 2006 at 11:58:19AM +0100, TNO wrote: > > what is the best for a char field with less than 1000 characters? > > a text field or a varchar(1000) > > They will be equivalent. text and varchar are the same type internally -- the > only differences are that varchar can have a length (but does not need one), > and that some casts are only defined for text. > > If there's really a natural thousand-character limit to the data in question, > use varchar(1000); if not, use text or varchar, whatever you'd like. > > /* Steinar */ > -- > Homepage: http://www.sesse.net/ > > ---------------------------(end of broadcast)--------------------------- > TIP 5: don't forget to increase your free space map settings > -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073
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