Re: Enhanced error message to include hint messages for redundant options error

From: Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>
To: vignesh C <vignesh21(at)gmail(dot)com>
Cc: Daniel Gustafsson <daniel(at)yesql(dot)se>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, "houzj(dot)fnst(at)fujitsu(dot)com" <houzj(dot)fnst(at)fujitsu(dot)com>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Dilip Kumar <dilipbalaut(at)gmail(dot)com>
Subject: Re: Enhanced error message to include hint messages for redundant options error
Date: 2021-07-11 09:52:56
Message-ID: CAEZATCXgxn0VG4caRYVckcC7_p86KcXSdfeCaEEUo0aFQLSNjA@mail.gmail.com
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On Sat, 10 Jul 2021 at 18:09, vignesh C <vignesh21(at)gmail(dot)com> wrote:
>
> I'm planning to handle conflicting errors separately after this
> current work is done, once the patch is changed to have just the valid
> scenarios(removing the scenarios you have pointed out) existing
> function can work as is without any changes. Thoughts?

Ah OK, that might be reasonable. Perhaps, then errorDuplicateDefElem()
and errorConflictingDefElem() would be better than what I originally
suggested.

BTW, another case I spotted was this:

copy (select 1) to stdout csv csv header;
ERROR: option "format" specified more than once
LINE 1: copy (select 1) to stdout csv csv header;
^

which isn't good because there is no option called "format".

Regards,
Dean

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