RE: [INTERFACES] Functions vs. Columns?????

> -----Original Message-----
> From: owner-pgsql-interfaces(at)postgreSQL(dot)org
> [mailto:owner-pgsql-interfaces(at)postgreSQL(dot)org]On Behalf Of Byron
> Nikolaidis
>
> Hi,
>
> I have a question as to how postgres handles some built-in functions,
> for example:
>
> Works Doesn't Work
> ------ ------------
> select now(); select now;
> select current_date; select current_date();
>
> It seems that there should be some consistency here in the use of
> parenthesis. I don't really know how these things are handled on the
> backend, but it seems that parenthesis are the more correct way, or at
> least both should be allowed.
>
> Any thoughts?
>

Parenthesis are needed in order to call functions in PostgreSQL.
current_date isn't a built-in function of PostgreSQL.
It's an SQL standard function and it's a special work of PostgreSQL
parser to change current_date to call another built-in function.

Regards.

Hiroshi Inoue
Inoue(at)tpf(dot)co(dot)jp