Walking through a mysql db

wes weston wweston at att.net
Sat Jun 4 15:52:30 CEST 2005


Jeff Elkins wrote:
> I'm writing a small wxpython app to display and update a dataset. So far, I 
> get the first record for display:
> 
>  try:
>       cursor = conn.cursor ()
>       cursor.execute ("SELECT * FROM dataset")
>       item = cursor.fetchone ()
> 
> Now, how do I step through the dataset one row at a time?  My form has  'next' 
> and 'back' buttons, and I'd like them to step forward or back, fetching the 
> appropriate row in the table. I've tried setting cursor.rownumber by 
> incrementing it prior to the fetchone() w/o effect.
> 
> Thanks for any pointers.
> 
> Jeff Elkins
> 
> 
> 
> 
> 
> 
Jeff,
    You just check for a fetchone return of None. "list" is a list
of tuples here.
     ...
     cursor.execute( sql )
     list = []
     while 1:
         row = cursor.fetchone()
         if not row:
             break
         list.append(row)
     ...
wes



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