On Monday 24 November 2008 23:21:15 Pavel Stehule wrote:
> > 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.
Then I don't understand why you need this special data type instead of using
an array of text with nulls for parameters without default.