Re: Quotes in SQL
От | Jeff Davis |
---|---|
Тема | Re: Quotes in SQL |
Дата | |
Msg-id | 200205140418.VAA20559@smtp.ucsd.edu обсуждение исходный текст |
Ответ на | Re: Quotes in SQL (Paul M Foster <paulf@quillandmouse.com>) |
Список | pgsql-general |
If I am correct, double quotation marks are used to denote an idetifier, such as a table name or an attribute name. Double quotation marks preserve the case of the name. In other words: "foo" == "foo" foo == "foo" FOO == "foo" but "FOO" != "foo" so, if you create a table like: create table "FOO" ( bar int ); then you must: select * from "FOO"; not: select * from foo; I believe that is what he was refering to. Regards, Jeff On Monday 13 May 2002 08:51 pm, Paul M Foster wrote: > On Tue, May 14, 2002 at 11:31:03AM +1000, Martijn van Oosterhout wrote: > > On Mon, May 13, 2002 at 02:49:47PM -0600, Randall Barber wrote: > > > Hi--I'm completely new to PostGres... From what I read in the > > > > documentation, sql here is same as there. > > > > > SELECT * FROM FOO.BAR WHERE FOO.BAR.BAZ='1234'; > > > > > > However, I just finished building my own PostGres and when I try to use > > > > it, I have to do stuff like this: > > > SELECT * FROM "FOO"."BAR" WHERE "FOO"."BAR"."BAZ" = '1234'; > > > > > > Is this a Postgres thing? Or did I compile it wrong? Or is it an > > > option > > > > to create_db? > > > > That's normal. If you use quotes when you create the table, you (usually) > > need quotes when accessing the fields. If you don't use quotes when > > creating the table, you don't need them when accessing. > > Huh? Doesn't the parser strip off the quotes? Are you saying it stores > the quotes and expects you to provide them when accessing the fields? > (Pardon if this seems like an incredibly dumb question.) > > Paul > > ---------------------------(end of broadcast)--------------------------- > TIP 6: Have you searched our list archives? > > http://archives.postgresql.org
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