On Tue, Dec 17, 2013 at 5:11 PM, David Johnston <pol...@yahoo.com> wrote:
> 3) Limitation of SQL - explained below: > > The function call string that you pass in is just that, a string, the SQL > construct within which it resides has no knowledge of its contents. > > SQL has the hard requirement that at the time you submit a query all > columns > must be known. If a function is polymorphic (in the sense it can output > different columns/row-types) then when you call that function you must > indicate which columns (and types) are going to be output by the function > during this specific execution. > I guess crosstabs were not all that I hoped they were (basically pivot tables), but thanks for the clear explanation. Cheers, Ken -- AGENCY Software A data system that puts you in control 100% Free Software *http://agency-software.org/ <http://agency-software.org/>* ken.tan...@agency-software.org (253) 245-3801 Subscribe to the mailing list<agency-general-requ...@lists.sourceforge.net?body=subscribe> to learn more about AGENCY or follow the discussion.
