You can do a lock at the single entity (in practice the record)
level.
On Dec 2, 7:26 am, yamandu <yamandu.co...@gmail.com> wrote:
> Thanks again Massimo,
>
> I think in my case it wont be such a big problem not to be transaction
> safe.
> But could be there any way I don´t see yet to do a lock. Right?
>
> On 2 dez, 00:40, mdipierro <mdipie...@cs.depaul.edu> wrote:
>
> > You have to loop:
>
> > for row in db(db.table.id>0).select():
> > row.update_record(x=row.x+1)
>
> > It is going to be slow and not transaction safe.
>
> > On Dec 1, 3:11 pm, yamandu <yamandu.co...@gmail.com> wrote:
>
> > > Could anyone here throw some light on this subject?
> > > I think GQL has no update statement and Web2py does not support
> > > expressions.
> > > So what´s thepropperwayto (batch) update records?
> > > I mean in the case like that:
>
> > > db.define_table('tabela',
> > > Field('x',integer) )
>
> > > Suppose I want to increment the value in x for a set of records.
>
> > > Would db(db.tabela.id>0).update(x='x+10') work on GAE ?
>
>
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