Are you sure you do not want left joins? Except for this query (db.city.id == db.groups.city_id) everything else seems un-necessary to me and perhaps should be a left join. Perhaps that's what is confusing the DB too.
On Thursday, 31 October 2013 07:50:47 UTC-5, Diogo Munaro wrote: > > Yes, web2py is not ok with it. Making 3 or 4 explicit joins and it gets > errors > > > 2013/10/31 Vinicius Assef <[email protected] <javascript:>> > >> That was my point, Diogo. >> >> Is there some fault when we have many explicit joins in DAL? >> >> >> On Wed, Oct 30, 2013 at 4:01 PM, Diogo Munaro >> <[email protected]<javascript:>> >> wrote: >> > 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 <[email protected] <javascript:>> >> >> >> >> 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 >> >> <[email protected]<javascript:> >> > >> >> 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.idAND >> >> > 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 <[email protected] <javascript:>> >> >> >> >> >> >> 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 <[email protected] <javascript:>> >> >> >>> >> >> >>> 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 <[email protected] <javascript:>> >> >> >>>> >> >> >>>> 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 <[email protected]> >> >> >>>>>> >> >> >>>>>> 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 <[email protected]> >> >> >>>>>>>> >> >> >>>>>>>> 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.id >> >> >>>>>>>> AND >> >> >>>>>>>> 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 <[email protected]> >> >> >>>>>>>>> >> >> >>>>>>>>> (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 >> >> >>>>>> [email protected]. >> >> >>>>>> >> >> >>>>>> 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 >> >> >>>> [email protected] <javascript:>. >> >> >>>> >> >> >>>> For more options, visit https://groups.google.com/groups/opt_out. >> >> >>> >> >> >>> >> >> >>> -- >> >> >>> Resources: >> >> >>> - 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