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: 2010-01-25 12:36:49
Message-ID: 162867791001250436u129501e5y84c45ea1c892a106@mail.gmail.com
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Hello

I hope, so this version is more readable and more clean. I removed
some not necessary checks.

regards

Pavel

2010/1/22 Robert Haas <robertmhaas(at)gmail(dot)com>:
> On Fri, Jan 22, 2010 at 7:19 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>> here is new variant. Add scan_state flag "valid" and enhance
>> protection against execution broken statement.
>
> This doesn't make sense to me.  You've changed the way \set is handled
> - in a way that doesn't seem particularly appropriate to me - but most
> of the other backslash commands are unmodified - but then there's this
> hack at the bottom that overrides the return value if
> psql_scan_is_valid() fails.  And then there's this:
>
> -                               /* we need not do psql_scan_reset() here */
> +                               psql_scan_reset(scan_state);
>
> It's extremely unclear what the rationale for this change is.
>
> Basically, you need to either improve the comments in here so that
> someone can understand what is going on, or you need to submit it with
> some detailed documentation explaining the rationale behind each
> change and why it is right, or more than likely both.  But I think the
> whole approach is likely off-base and you need to go back and think
> about a cleaner way to get this done.
>
> ...Robert
>

Attachment Content-Type Size
variable-escaping.diff application/octet-stream 12.2 KB

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