Re: Case sensitive field names

From: Hannu Krosing <hannu(at)tm(dot)ee>
To: Jarmo Paavilainen <netletter(at)comder(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)hub(dot)org>
Subject: Re: Case sensitive field names
Date: 2000-09-26 10:35:24
Message-ID: 39D07BEC.4024B028@tm.ee
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Jarmo Paavilainen wrote:
>
> Hi,
>
> Is there a way to make postgre insensitive about field name cases?
>
> Like "initdb --fields-are-case-insensitive --compares-are-case-insensitive"
>
> Yes I know about "CaseIsKept" and CaseIsNotKept (note the quotes). But that
> gives me more trouble than it solves. And what about "case insensitive field
> name with spaces". I believe that space is legal in field names.

The main problem I see with case-insensitivity is the fact that there
are always
more than one way to do it, as it depends on charset _and_ locale ;(

For example 'Ä'=='ä' in my locale but not in US, not to mention that in
some
locales even the character count may change when going from upper to
lower case.

So I suspect that only valid reason for case-insensitivity is
compatibility with
arbitraryly-case-altering OS-es, like the ones Microsoft produces.

For any other use WYSIWYG field names should be preferred.

> Are there any real reason why postgre is sensitive about field names (except
> SQL92 states that this is how it must be)?
>
> I suppose somewhere along the way I have all field names separated from the
> query, and in which file(s) does that happen? (So I can do my own hack, add
> "tolower(fieldName)").
>
> Ive tried to locate the right files in the source for 7.0.2, but there are
> more that one file.

I guess the best place would be sobewhere very near lexer.

You could also try just uppercasing anything outside ''/"" even before
it is
passed to backend.

---------
Hannu

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