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Re: WIP: default values for function parameters

From: "David E(dot) Wheeler" <david(at)kineticode(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Peter Eisentraut <peter_e(at)gmx(dot)net>, pgsql-hackers(at)postgresql(dot)org, "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com>
Subject: Re: WIP: default values for function parameters
Date: 2008-11-30 18:04:33
Message-ID: 9405E2FD-CB0D-4369-A36F-63970E4E8173@kineticode.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On Nov 30, 2008, at 6:49 PM, Tom Lane wrote:

> Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
>> There are two ways to fix this, both having some validity:
>
>> 1. We create a second version of pg_get_function_arguments() that  
>> produces
>> arguments without default values decoration.  This is probably the
>> technically sound thing to do.
>
> Yes.  I think that the argument for allowing parameter names in  
> commands
> like ALTER FUNCTION is that the user might consider them part of the
> function's identity.  This can hardly be claimed for default values.

Agreed, default values should not be a part of function signatures,  
although it might be nice if ALTER FUNCTION to allow default values to  
be changed.

Best,

David

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