Re: [HACKERS] Preserving param location

From: Julien Rouhaud <rjuju123(at)gmail(dot)com>
To: pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: [HACKERS] Preserving param location
Date: 2021-06-27 03:31:53
Message-ID: 20210627033153.4orlkah2grcnslgi@nol
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On Sat, Mar 11, 2017 at 11:09:32PM +0100, Julien Rouhaud wrote:
> When a query contains parameters, the original param node contains the token
> location. However, this information is lost when the Const node is generated,
> this one will only contain position -1 (unknown).
> FWIW, we do have a use case for this (custom extension that tracks quals
> statistics, which among other thing is used to regenerate query string from a
> pgss normalized query, thus needing the original param location).

rebased v2.

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