2010/2/22 Hitoshi Harada <umi.tanuki@gmail.com>:
> I just wonder why generate_series() is not allowed in GREATEST syntax.
> Looking through execQual.c, almost all syntactic evaluations like
> COALESCE, ARRAY[], ROW() doesn't allow set-value functions. Could
> someone tell the underlying reason?
>
> Also, using variadic functions introduced since 8.4, I hope we can
> remove the special syntax cases for them by replacing them with normal
> variadic functions. Is it sane idea?
we cannot do it :(
we cannot ensure similar coercion for these functions with variadic
functions. Variadic functions use a generic coercion.
Regards
Pavel Stehule
>
> Regards,
>
> --
> Hitoshi Harada
>
> --
> Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-hackers
>
