Re: A VIEW mimicing a TABLE

14 Dec 2006 02:45:12 -0800, SunWuKung <Balazs(dot)Klein(at)t-online(dot)hu>:
>
>
> > CREATE RULE new_entry AS ON INSERT to logview DO INSTEAD INSERT
> > (id,tm,info) VALUES (COALESCE(new.id,[default]),COALESCE(new.tm
> > ,[default]),COALESCE(new.info,[default]));
>
> what would [default] insert here?

A constant, a function, anything you want. I have a function to create
rules of insert an update on views that have the same columns that the
tables that its represent. In this case, my [default] is the default value
for the column of the table.
COALESCE function only choose the second argument when the first is
null. An alias to "IF $1 IS NULL THEN $2 ELSE $1".

the default of the view or the default of the underlying table?
>
> B.
>
>
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--
William Leite Araújo
Analista de Banco de Dados - QualiConsult