The previous version of psql was 7.0.3. The current version is 7.1.3.
I followed your suggestions and got the order by to work correctly. Here is a summary of the order by changes I had to make:
7.0.3 7.1.3 o.order_id order_id u.first_names, u.last_name first_names,last_name ec_total_price(o.order_id) price_to_display (the as ...)
It seems like the last time I tried the last one in oracle, it didn't work like this, although I had hoped that it would.
Thanks for your help, and Happy New Year!