From: | "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com> |
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To: | "Peter Eisentraut" <peter_e(at)gmx(dot)net> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: WIP: default values for function parameters |
Date: | 2008-11-24 21:21:15 |
Message-ID: | 162867790811241321u64c0bcecj604559f352bba82f@mail.gmail.com |
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Lists: | pgsql-hackers |
2008/11/24 Peter Eisentraut <peter_e(at)gmx(dot)net>:
> On Monday 24 November 2008 11:40:31 Pavel Stehule wrote:
>> I would to implement named params - and there expressions, that are
>> used as default params, should not be continual. I don't store params
>> as array of text because I would to eliminate repeated expression's
>> parsing. So I use similar machanism used for rules or views.
>
> You mean you want to avoid repeated parsing of expressions in case the same
> expression is used as a default value for several parameters? How common
> would that be?
>
no - I am reading default parameters in call statement parsing.
Default parameters are implemented similar to variadic functions - so
no changes on PL part - all changes are on caller part.
Pavel
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