In case .grid() is a requirement and schema is frozen, the best option would be to make the union in the backend (postgres) with a view (index it as describe in the SO explain for better performance) and create a db models for the view in web2py which it can only be selected as it is a view. I am doing this for complexe query in my app.
Richard On Tue, Apr 25, 2017 at 11:50 AM, Richard Vézina < ml.richard.vez...@gmail.com> wrote: > Is there a major issue that prevent us to use SQLFORM.grid like > crud.select() where you can pass a query instead of a talbe?? > > Richard > > On Tue, Apr 25, 2017 at 11:45 AM, Richard Vézina < > ml.richard.vez...@gmail.com> wrote: > >> Yes, you are right, he can use SQLTABLE or build his grid with helper >> though... >> >> Richard >> >> On Tue, Apr 25, 2017 at 11:23 AM, Anthony <abasta...@gmail.com> wrote: >> >>> On Tuesday, April 25, 2017 at 10:39:53 AM UTC-4, Richard wrote: >>>> >>>> Forgot to mention... If you for some reason you can't refactor your >>>> schema... you can unionize query in web2py like so : >>>> >>>> select_cat = db(db.cat.id>0).select() >>>> >>>> select_dog = db(db.dog.id>0).select() >>>> >>>> select_cat_and_dog = select_cat | select_dog >>>> >>>> Note: You can use & or | they are python binary operator, if I recall >>>> used like that combine with web2py query they mimic union (no duplicate) >>>> and union all (keep duplicate)... >>>> >>> >>> That won't help in this case. Above, you are running two separate SQL >>> queries, creating two separate Rows objects, and then combining the Rows >>> objects via Python. That approach cannot be used with SQLFORM.grid, which >>> requires a single query as its input. >>> >>> Anthony >>> >>> -- >>> 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. >>> >> >> > -- 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.
