Re: quoting psql varible as identifier

From: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: quoting psql varible as identifier
Date: 2010-01-11 04:22:25
Message-ID: 162867791001102022p52aef4c1y9674dfa3c43dab2@mail.gmail.com
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2010/1/11 Robert Haas <robertmhaas(at)gmail(dot)com>:
> On Tue, Jan 5, 2010 at 8:23 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>> 2010/1/5 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
>>> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>>>> On Mon, Jan 4, 2010 at 2:51 PM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>>>>> I don't have a problem to write second and safe fmtId
>>>>> function (with technique used in dumputils don't need to modify
>>>>> libpq), although fmtId do exactly what I need. I would to understand
>>>>> to behave.
>>>
>>>> I think you mean that you would need to understand how it should
>>>> behave - in which case I agree, but I think  Tom spelled that out
>>>> pretty clearly upthread: close PQescapeStringConn and adapt it to be
>>>> PQescapeIdentifier.
>>>
>>> The more important point here is that fmtId doesn't do "exactly what you
>>> need" in any case.  fmtId is safe to use in pg_dump because pg_dump is
>>> only expected to work with the same or older version of the backend.
>>> It would not be safe to use it in libpq, which is expected to still work
>>> with newer backends that might have more reserved words.
>>
>> So I finnaly moved to libpq PQescapeIdentConn function
>>
>> patch is attached.
>
> No longer applies, please rebase.

ok I'll do it today

Pavel

>
> Thanks,
>
> ...Robert
>

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