Re: Difference between char and varchar
| От | Bruno Wolff III |
|---|---|
| Тема | Re: Difference between char and varchar |
| Дата | |
| Msg-id | 20060829210719.GA24393@wolff.to обсуждение исходный текст |
| Ответ на | Re: Difference between char and varchar (Franck Routier <franck.routier@axege.com>) |
| Список | pgsql-novice |
On Tue, Aug 29, 2006 at 12:22:07 +0200, Franck Routier <franck.routier@axege.com> wrote: > Bruno Wolff III a écrit : > >On Mon, Aug 28, 2006 at 15:04:26 -0400, > > Richmond Dyes <rdyes@monroehosp.org> wrote: > > > >>I know the difference between char and varchar is char is fixed length > >>and varchar returns variable length. Which one should be used and why? > >> > > > >You normally want to use 'text' instead of either 'char' or 'varchar'. > >Unless there is a business rule limiting the length of a string (and > >sometimes > >not even then) you want to use 'text' as it is more flexible. > > > But it is not 'standard' sql, so it won't be portable to other > databases, if needed. I didn't think of that until after I sent the message. I should have listed portability as a reason to user char or varchar.
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