You need to create a script that loops through setting the new property then doing a put().
Robert On Dec 4, 2009, at 9:40, sofia <[email protected]> wrote: > Hi, > > I have a model that I need to filter by date, start and end date. It > has a DateTime property to which this double filter was going to be > applied but I've since found out that this isn't possible in app > engine. So now I want to add a new field with only the year and month, > something like 200912 and will only filter by month. > > So if i have a 1000 rows, like this > > title | date_created | year_month > a string | 2009-10-12 00:00:00 | > the string | 2009-09-22 00:00:00 | > > how do i update in one go all rows so that i end up with this: > > title | date_created | year_month > a string | 2009-10-12 00:00:00 | 200910 > the string | 2009-09-22 00:00:00 | 200909 > > Is there any way to do this, or do I have to create a script that > fetches each row one by one and updates the field accordingly? > > Thanks, > > Sofia > > -- > > You received this message because you are subscribed to the Google > Groups "Google App Engine" group. > To post to this group, send email to google- > [email protected]. > To unsubscribe from this group, send email to > [email protected] > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en > . > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
