Re: WIP: default values for function parameters

2008/11/24 Tom Lane <tgl@sss.pgh.pa.us>:
> "Pavel Stehule" <pavel.stehule@gmail.com> writes:
>> 2008/11/24 Peter Eisentraut <peter_e@gmx.net>:
>>> Could you explain why you store the default expressions in a new posexpr
>>> type rather than in an array of text (compare pg_attrdef.adbin)?
>
>> 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.
>
> Say again?  The representation Peter is suggesting *is* what is used
> in rules and views.  If you've re-invented that wheel, undo it.
>

Then I am blind. I store serialised transformed expression, but if
better solution exists, then I'll use it.

regards
Pavel Stehule

>                        regards, tom lane
>