14 Dec 2006 02:45:12 -0800, SunWuKung <
Balazs.Klein@t-online.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
