The latter one works only with postgres: https://groups.google.com/forum/#!topic/web2py/1_DHUrrg6O8
What's the error message? On Sat, Jan 3, 2015 at 5:30 AM, Massimo Di Pierro < massimo.dipie...@gmail.com> wrote: > > > On Friday, 2 January 2015 16:03:16 UTC-6, mweissen wrote: >> >> I have tried to convert an application from SQLite to Postgresql and I >> have found two differences: >> >> (1): >> q = some query like db.table.field<3 >> b = some boolean like a<3 >> db(q & b) >> >> SQLite needs to convert b to '0' or '1', Postgresql to 'FALSE' or 'TRUE' >> > > yes but web2py does it for you. you should not need to change your code. > > >> >> (2): orderby generates some difficult error messages. I have found the >> following solution >> SQLite >> db(db.table.field==x).select(orderby=db.table.field2, >> groupby=db.table.field2) >> >> Postgresql: >> db(db.table.field==x).select(orderby=db.table.field2, >> distinct=db.table.field2) >> > > Are you sure? I think they both work on both databases. The problems arise > when you groupby some fields and records are not sorted by those fields. > Some engines allow it and some don't. > > >> Does somebody has similar experiences? >> >> Regards, Martin >> >> >> 2015-01-02 16:29 GMT+01:00 Michele Comitini <michele.comit...@gmail.com>: >> >>> SQLite is by design an excellent embedded database, better suited for >>> single user implementation and targeted at small datasets. >>> For larger datasets there is no reason not to use PostgreSQL, it's free, >>> well supported by web2py, >>> handles very large datasets and it's easy to setup. >>> >>> Migration from SQLite to any other db supported by web2py is very easy >>> and explained on the web2py book >>> >>> 2015-01-02 6:49 GMT+01:00 Eric Taw <tawe...@gmail.com>: >>> >>>> From reading a lot of web2py tutorials and guides, they always say >>>> SQLite is good for small implementations of databases, whereas other SQL >>>> flavors are better suited for larger uses. Is there any reason why? Can I >>>> still use SQLite if I have a lot of information to store? >>>> >>>> -- >>>> 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. >>> >> >> >> -- > 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.
