Are you saying that used to work but doesn't any longer? How about db(db.table).select(max)?
Anthony On Thursday, July 13, 2017 at 1:16:31 PM UTC-4, lyn2py wrote: > > I'm using a simple query to get aggregate: > > max = db.table.date.max() > row = db().select(max) > > Just following the example here > http://www.web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#sum-avg-min-max-and-len > > But I ran into this error: > > Traceback (most recent call last): > File "/Users/web2py/web2py/gluon/main.py", line 445, in wsgibase > serve_controller(request, response, session) > File "/Users/web2py/web2py/gluon/main.py", line 180, in serve_controller > page = run_controller_in(request.controller, request.function, > environment) > File "/Users/web2py/web2py/gluon/compileapp.py", line 660, in > run_controller_in > vars = vars.xml() > File "/Users/web2py/web2py/gluon/packages/dal/pydal/objects.py", line > 2497, in xml > rv = self.db.represent('rows_xml', self) > File "/Users/web2py/web2py/gluon/packages/dal/pydal/base.py", line 834, > in represent > return self.representers[name](*args, **kwargs) > File "/Users/web2py/web2py/gluon/sqlhtml.py", line 3319, in __init__ > tablemap = dict(((f.tablename, f.table) for f in fieldmap.values())) > File "/Users/web2py/web2py/gluon/sqlhtml.py", line 3319, in <genexpr> > tablemap = dict(((f.tablename, f.table) for f in fieldmap.values())) > AttributeError: 'Expression' object has no attribute 'tablename' > > > Kindly assist. > > > On Tuesday, July 11, 2017 at 5:40:08 AM UTC+8, Massimo Di Pierro wrote: >> >> It took a year. Thanks to everybody who contributed. There are a ton of >> bug fixes and speed improvements. >> >> I would encourage everybody who contributed to add a comment in this >> thread explaining the main features/improvements they have made. >> >> If anything does not work or was broken it is only fault and I will >> remedy if reported. >> >> Massimo >> > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
