Latitude and Longitude Functions

Hi Pat!

[My apologies if you get this more than once]

I've been looking at Roy Williams' comments. And pondering Latitude and Longitude functions. Have I misunderstood, and is there an unnecessary limitation? From the BNF:

<latitude> ::= LATITUDE <left_paren> <point> <right_paren>

and

<point> ::= POINT <left_paren> <coord_sys> <comma> <coordinates>
<right_paren>

POINT is a geometry expression. You cannot do:

select latitude( a.col1 ) from cata as a ;

Is this a problem?
Regards
Jeff

-- 
Jeff Lusted               tel: +44 (0)116 252 3581
Astrogrid Project         mob: +44 (0)7973 492290
Dept Physics & Astronomy  email: jl99-at-star.le.ac.uk
University of Leicester   web: http://www.astrogrid.org