Hi Vinicius! The query with a lot of natural joins really don't work, but join with WHERE worked.
I don't know what happend, but web2py become crazy when I set more natural joins 2013/10/30 Vinicius Assef <vinicius...@gmail.com> > Maybe I missed something, but why the simple query (with few joins) > worked and the complex one (with many joins) didn't? > > On Wed, Oct 30, 2013 at 2:31 PM, Diogo Munaro <diogo.mvie...@gmail.com> > wrote: > > Hi Michele, I'm looking here the results... > > > > If I get where and natural join is different. > > > > The explain is like that: > > > http://stackoverflow.com/questions/15996226/natural-join-vs-where-in-clauses > > > > Here is massimo suggested code: > > > > mysql> explain SELECT groups.name, city.name, auth_user.id, > > auth_user.is_active, auth_user.created_on, auth_user.created_by, > > auth_user.modified_on, auth_user.modified_by, auth_user.email, > > auth_user.person_id, auth_user.password, auth_user.know_id, > > auth_user.registration_key, auth_user.reset_password_key, > > auth_user.registration_id FROM researcher, researcher_lab_permission, > lab, > > groups, auth_user, city WHERE ((((((((groups.id = lab.group_id) AND ( > lab.id > > = researcher_lab_permission.lab_id)) AND (researcher.id = > > researcher_lab_permission.researcher_id)) AND (researcher.user_id = > > auth_user.id)) AND (researcher_lab_permission.is_active = 'T')) AND > > (lab.is_active = 'T')) AND (groups.is_active = 'T')) AND > > (auth_user.is_active = 'T')) > > -> ; > > > +----+-------------+---------------------------+--------+--------------------------------+---------+---------+------------------------------------------------+------+--------------------------------+ > > | id | select_type | table | type | possible_keys > > | key | key_len | ref | > rows > > | Extra | > > > +----+-------------+---------------------------+--------+--------------------------------+---------+---------+------------------------------------------------+------+--------------------------------+ > > | 1 | SIMPLE | city | ALL | NULL > > | NULL | NULL | NULL | > 5535 > > | | > > | 1 | SIMPLE | researcher_lab_permission | ALL | > > researcher_id__idx,lab_id__idx | NULL | NULL | NULL > > | 2 | Using where; Using join buffer | > > | 1 | SIMPLE | lab | eq_ref | > > PRIMARY,group_id__idx | PRIMARY | 4 | > > labsyn.researcher_lab_permission.lab_id | 1 | Using where > > | > > | 1 | SIMPLE | groups | eq_ref | PRIMARY > > | PRIMARY | 4 | labsyn.lab.group_id | > 1 > > | Using where | > > | 1 | SIMPLE | researcher | eq_ref | > > PRIMARY,user_id__idx | PRIMARY | 4 | > > labsyn.researcher_lab_permission.researcher_id | 1 | > > | > > | 1 | SIMPLE | auth_user | eq_ref | PRIMARY > > | PRIMARY | 4 | labsyn.researcher.user_id | > 1 > > | Using where | > > > +----+-------------+---------------------------+--------+--------------------------------+---------+---------+------------------------------------------------+------+--------------------------------+ > > > > > > Here is with JOIN: > > > > explain SELECT l.id,g.name,c.name FROM researcher_lab_permission as rl > JOIN > > lab as l > > -> JOIN researcher as r JOIN auth_user as a JOIN groups > as g > > JOIN city as c > > -> ON rl.researcher_id = r.id AND rl.lab_id = l.id AND > a.id > > = r.user_id AND l.group_id = g.id > > -> AND c.id = g.city_id > > -> ; > > > +----+-------------+-------+--------+--------------------------------+-----------------+---------+-------------------------+------+--------------------------------+ > > | id | select_type | table | type | possible_keys | > key > > | key_len | ref | rows | Extra > > | > > > +----+-------------+-------+--------+--------------------------------+-----------------+---------+-------------------------+------+--------------------------------+ > > | 1 | SIMPLE | l | index | PRIMARY,group_id__idx | > > group_id__idx | 5 | NULL | 2 | Using index > > | > > | 1 | SIMPLE | rl | ALL | researcher_id__idx,lab_id__idx | > NULL > > | NULL | NULL | 2 | Using where; Using join > buffer > > | > > | 1 | SIMPLE | a | index | PRIMARY | > > created_by__idx | 5 | NULL | 2 | Using index; > > Using join buffer | > > | 1 | SIMPLE | r | eq_ref | PRIMARY,user_id__idx | > > PRIMARY | 4 | labsyn.rl.researcher_id | 1 | Using where > > | > > | 1 | SIMPLE | g | eq_ref | PRIMARY,city_id__idx | > > PRIMARY | 4 | labsyn.l.group_id | 1 | > > | > > | 1 | SIMPLE | c | eq_ref | PRIMARY | > > PRIMARY | 4 | labsyn.g.city_id | 1 | > > | > > > +----+-------------+-------+--------+--------------------------------+-----------------+---------+-------------------------+------+--------------------------------+ > > > > Without natural join it's getting all the cities first without any > > optimizations. So I observed that that code was not filtering cities. > > > > Now works great: > > rows = db(db.groups.id == db.lab.group_id)(db.groups.city_id == > > db.city.id)(db.lab.id == > > db.researcher_lab_permission.lab_id)(db.researcher.id == > > db.researcher_lab_permission.researcher_id)(db.researcher.user_id == > > db.auth_user.id).select(db.groups.name,db.city.name) > > > > Thank you guys! > > > > > > > > 2013/10/30 Michele Comitini <michele.comit...@gmail.com> > >> > >> implicit inner join vs explicit should be same in speed terms, but... > >> > >> http://stackoverflow.com/questions/5273942/mysql-inner-join-vs-where > >> > >> > >> > >> > >> 2013/10/30 Diogo Munaro <diogo.mvie...@gmail.com> > >>> > >>> I really need these joins to filter tables instead of join all and then > >>> make a filter with WHERE (spend a long time). > >>> > >>> I only need these 2 fields. > >>> > >>> My query works great with db.executesql but I'm not working with dal > >>> optimizations, like table record versioning, and need to do some where > >>> statment by myself (is_active). > >>> > >>> It's a DAL bug? I'm using web2py 2.7.2 > >>> > >>> > >>> 2013/10/30 Massimo Di Pierro <massimo.dipie...@gmail.com> > >>>> > >>>> What fields do you need to select. We can optimize this. > >>>> > >>>> > >>>> On Wednesday, 30 October 2013 05:17:09 UTC-5, Diogo Munaro wrote: > >>>>> > >>>>> I'ts working, but it's results a WHERE JOIN and takes much more time > >>>>> than JOIN sintax :( > >>>>> > >>>>> > >>>>> 2013/10/29 Massimo Di Pierro <massimo....@gmail.com> > >>>>>> > >>>>>> Try this: > >>>>>> > >>>>>> rows = db(db.groups.id == db.lab.group_id)(db.lab.id == > >>>>>> db.researcher_lab_permission.lab_id)(db.researcher.id == > >>>>>> db.researcher_lab_permission.researcher_id)(db.researcher.user_id == > >>>>>> db.auth_user.id).select(db.groups.name,db.city.name > ,db.auth_user.ALL) > >>>>>> > >>>>>> > >>>>>> On Monday, 28 October 2013 21:46:28 UTC-5, Diogo Munaro wrote: > >>>>>>> > >>>>>>> Here is the sql generated: > >>>>>>> > >>>>>>> SELECT groups.name, city.name, auth_user.email, name1.id, > >>>>>>> name1.is_active, name1.created_on, name1.created_by, > name1.modified_on, > >>>>>>> name1.modified_by, name1.user_id, name1.image, name1.image_file, > >>>>>>> name1.lattes, name2.id, name2.is_active, name2.created_on, > name2.created_by, > >>>>>>> name2.modified_on, name2.modified_by, name2.site, name2.url, > name2.cnpj, > >>>>>>> name2.type_id, name2.group_id, name2.privacity FROM > >>>>>>> researcher_lab_permission, researcher, lab JOIN groups ON (( > groups.id = > >>>>>>> lab.group_id) AND (groups.is_active = 'T')) JOIN city ON (city.id= > >>>>>>> groups.city_id) JOIN auth_user ON ((researcher.user_id = > auth_user.id) AND > >>>>>>> (auth_user.is_active = 'T')) JOIN `researcher` AS name1 ON ( > researcher.id = > >>>>>>> researcher_lab_permission.researcher_id) JOIN `lab` AS name2 ON (( > lab.id = > >>>>>>> researcher_lab_permission.lab_id) AND (lab.is_active = 'T')) > >>>>>>> > >>>>>>> Some JOINS are wrong > >>>>>>> > >>>>>>> > >>>>>>> 2013/10/29 Diogo Munaro <diogo....@gmail.com> > >>>>>>>> > >>>>>>>> I need these joins because I need filter some tables without > >>>>>>>> selecting all the tables and filtering with where. Anyway, I > tried: > >>>>>>>> > >>>>>>>> rows = (db.groups.id == db.lab.group_id)(db.lab.id == > >>>>>>>> db.researcher_lab_permission.lab_id)(db.researcher.id == > >>>>>>>> db.researcher_lab_permission.researcher_id)(db.researcher.user_id > == > >>>>>>>> db.auth_user.id).select(db.groups.name,db.city.name > ,db.auth_user.ALL) > >>>>>>>> > >>>>>>>> And it returns: > >>>>>>>> > >>>>>>>> <type 'exceptions.TypeError'> 'Query' object is not callable > >>>>>>>> > >>>>>>>> I'm using db.executesql and it's working: > >>>>>>>> > >>>>>>>> db.executesql('''SELECT l.id,g.name,c.name FROM > >>>>>>>> researcher_lab_permission as rl JOIN lab as l > >>>>>>>> JOIN researcher as r JOIN auth_user as a JOIN > groups > >>>>>>>> as g JOIN city as c > >>>>>>>> ON rl.researcher_id = r.id AND rl.lab_id = l.idAND > >>>>>>>> a.id = r.user_id AND l.group_id = g.id > >>>>>>>> AND c.id = g.city_id WHERE a.id = %s''' > >>>>>>>> %(auth.user_id)) > >>>>>>>> > >>>>>>>> Something strange with DAL... > >>>>>>>> > >>>>>>>> 2013/10/28 Massimo Di Pierro <massimo....@gmail.com> > >>>>>>>>> > >>>>>>>>> (db.groups.id == db.lab.group_id)(db.lab.id == > >>>>>>>>> db.researcher_lab_permission.lab_id)(db.researcher.id == > >>>>>>>>> > db.researcher_lab_permission.researcher_id)(db.researcher.user_id == > >>>>>>>>> db.auth_user.id).select(db.groups.name,db.city.name > ,db.auth_user.ALL) > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>> > >>>>>> -- > >>>>>> 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 a topic in > the > >>>>>> Google Groups "web2py-users" group. > >>>>>> To unsubscribe from this topic, visit > >>>>>> https://groups.google.com/d/topic/web2py/0YdtJwCEdl4/unsubscribe. > >>>>>> To unsubscribe from this group and all its topics, send an email to > >>>>>> web2py+un...@googlegroups.com. > >>>>>> > >>>>>> For more options, visit https://groups.google.com/groups/opt_out. > >>>>> > >>>>> > >>>> -- > >>>> 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 a topic in the > >>>> Google Groups "web2py-users" group. > >>>> To unsubscribe from this topic, visit > >>>> https://groups.google.com/d/topic/web2py/0YdtJwCEdl4/unsubscribe. > >>>> To unsubscribe from this group and all its topics, send an email to > >>>> web2py+unsubscr...@googlegroups.com. > >>>> > >>>> For more options, visit https://groups.google.com/groups/opt_out. > >>> > >>> > >>> -- > >>> Resources: > >>> - 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