Great thanks! Any other ideas from anyone to speed this up further?
On May 27, 3:25 am, Mr admin <mr.netad...@gmail.com> wrote: > OK here's an example of counting matching records with web2py syntax. > > SQL version > select count(*) from tbbooks where id = 1 group by id; > > Note! if you don't add the GROUP BY clause, you'll get a count > of 1 record... even if there a NO MATCHES.... probably NOT what you intended > to do. > The GROUP BY clause give you an "Empty Set" for non-matching search results > > web2py version > matches = db(db.tbbooks.id == 1).count() > > > > On Wed, May 26, 2010 at 2:44 PM, scausten <scaus...@googlemail.com> wrote: > > I'm adding files content to my database with the following code being > > called onvalidation when the form is submitted. It really simply > > generates a 6-digit alphanumeric code as an identifier for the file: > > > codes = db().select(db.products.code) # Grabs all the existing codes > > from the database > > while not form.vars.code: > > code = "".join([random.sample(string.ascii_lowercase > > +string.digits, 1)[0] for i in range(6)]) # Creates a code > > if not code in codes: # If its unique... > > form.vars.code = code # ...add it into the form vars > > > It works fine at the moment, but I'm hoping to have several hundred > > thousand files potentially, and I'm worried that the database call to > > pull all existing codes will become a serious bottleneck. The code > > needs to be random and not sequential. > > > Does anyone have any ideas on how I can do this more elegantly?
