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Gevik Babakhani wrote:
>
> This patch implements the function parameter referencing by name as
> discussed before.
> Please find the version 1.0 of this patch at http://www.postgresql.nl/gevik/
>
> The zip archive contains a combined and separate patches to make reviewing
> easier.
>
> How this patch is implemented:
> As discussed before, a generic parser callback functionality has been
> implemented
> to create hooks from within the parser. The mechanism of handling refnames
> acts only
> when the parser is in context of parsing a function AND all of the previous
> attempts to
> recognize an unknown refname (also after implicit RTE) has failed. This way
> the match
> for a possible function parameter name is executed as a last measure.
>
> notes:
>
> - a new error code has been added: ERRCODE_UNDEFINED_FUNCTION_PARAMETER_NAME
> - when a given refname is unrecognized after all matches, one of the two
> following
> error messages is shown:
>
> a) "there is no parameter %s defined for function %s"
> b) "there is no parameter %s.%s defined for function %s or this \n is
> an invalid reference to FROM-clause entry for table \"%s\""
>
> - 2 new files have been added parse_callback.h and .c
> - the patch also contains test for regression
> - the main logic is implemented in transformColumnRef/ case 1 and case 2
> - patch is created using VC++ 2005, tested on Win32 and RH4
>
>
> ------------------------------------------------
> Gevik Babakhani
>
> PostgreSQL NL http://www.postgresql.nl
> TrueSoftware BV http://www.truesoftware.nl
> ------------------------------------------------
>
>
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EnterpriseDB http://postgres.enterprisedb.com
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