Re: array_map not SQL accessible?

Tom Lane wrote:
> Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
> > I'm wondering why don't we expose the array_map() function to the SQL
> > level.
>
> It requires some notion of "reference to function", which doesn't really
> exist in SQL. (Please don't say you're going to pass it a function
> OID.)

regproc maybe?

> > As it happens, I need to use it in the pg_dump support for TOAST
> > reloptions.
>
> Maybe something involving
> ARRAY(SELECT foo(x) FROM UNNEST(arrayvariable) x)

Hmm, I'll have a look at this.

--
Alvaro Herrera http://www.PlanetPostgreSQL.org/
"Linux transformó mi computadora, de una `máquina para hacer cosas',
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