Обсуждение: capitals in fieldnames

Hi!

I use postgres 7.0.3 on Linux and have the following problem:
there is a field with the name 'BGF' and I can access it only with:

SELECT "BGF" FROM <table>;

Neither

SELECT BGF ... nor
SELECT bgf ...

work. But AFAIK all three should do. Whats wrong here?

thanks
markus

It was initially created with quotes. If you want to access it the other way, you need to rename it:

ALTER TABLE foo RENAME COLUMN "BGF" TO BGF;

Hope that helps,

Mike Mascari

-----Original Message-----
From:    Markus Mohr [SMTP:markus@johalla.de]
Sent:    Saturday, March 31, 2001 5:02 PM
To:    pgsql-general@postgresql.org
Subject:    [GENERAL] capitals in fieldnames

Hi!

I use postgres 7.0.3 on Linux and have the following problem:
there is a field with the name 'BGF' and I can access it only with:

SELECT "BGF" FROM <table>;

Neither

SELECT BGF ... nor
SELECT bgf ...

work. But AFAIK all three should do. Whats wrong here?

thanks
markus

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Markus Mohr wrote:
>
> Hi!
>
> I use postgres 7.0.3 on Linux and have the following problem:
> there is a field with the name 'BGF' and I can access it only with:
>
> SELECT "BGF" FROM <table>;
>
> Neither
>
> SELECT BGF ... nor
> SELECT bgf ...
>
> work. But AFAIK all three should do. Whats wrong here?

PostgreSQL lower-cases everything as it is used unless you put it in
double-quotes. The two examples should work if your field was 'bgf' -
you must have created it with double-quotes or imported it from another
system e.g. MS-Access.

It can be irritating, I agree and does make porting from Access more
difficult but I can't see it changing.

- Richard Huxton