Yes, exactly. There is still a join which is now not being used at all.

On Monday, July 22, 2013 10:02:38 AM UTC-4, Pat Allan wrote:
>
> To be clear: the join is appearing twice (incorrectly) instead of once 
> (for the attributes that have been there a while)? 
>
> On 22/07/2013, at 11:59 PM, Daniel Vandersluis wrote: 
>
> > Alright so using the updated version (I just pulled the master version, 
> I saw there were some other fixes that looked good) does create a proper 
> query that sphinx can work with! I'm not really sure what different using 
> the query source should make, but searching still seems fast and indexing 
> was much faster. 
> > 
> > I noticed, however, that a join is still being created for the column in 
> the main sql_query despite no longer being necessary. 
> > 
> > On Saturday, July 20, 2013 11:41:09 PM UTC-4, Daniel Vandersluis wrote: 
> > Thanks for your help with this, Pat - I will try out the updated version 
> ASAP (probably Monday morning) and let you know! 
> > 
> > On Saturday, July 20, 2013 11:11:59 PM UTC-4, Pat Allan wrote: 
> > Hi Daniel 
> > 
> > Just pushed a fix for this - the GROUP_CONCAT certainly shouldn't be in 
> sql_query. 
> > 
> > If you want to use the latest: 
> > 
> >   gem 'thinking-sphinx', '~> 3.0.4', 
> >     :git    => 'git://github.com/pat/thinking-sphinx.git', 
> >     :branch => 'master', 
> >     :ref    => '578ae397e7' 
> > 
> > Appreciate your patience with this. 
> > 
> > Cheers 
> > 
> > -- 
> > Pat 
> > 
> > On 19/07/2013, at 5:15 AM, Daniel Vandersluis wrote: 
> > 
> > > Seems to be because GROUP_CONCAT(job_applications_users.`job_id` 
> SEPARATOR ',') AS `job_ids` was still being included in the sql_query 
> line... is there another option I need to remove it? 
> > > 
> > > 
> > > On Thursday, July 18, 2013 3:03:01 PM UTC-4, Daniel Vandersluis wrote: 
> > > Hmm... when I try that I get this error: 
> > > 
> > > indexing index 'user_core'... 
> > > ERROR: index 'user_core': multi-valued attribute 'job_ids' of wrong 
> source-type found in query; must be 'field'. 
> > > 
> > > The line in the generated config file looks like this: 
> > > 
> > > sql_attr_multi = uint job_ids from query; SELECT 
> `job_applications`.`user_id` * 9 + 1 AS `id`, `job_applications`.`job_id` 
> AS `job_ids` FROM `job_applications` 
> > > 
> > > On Thursday, July 18, 2013 2:53:29 PM UTC-4, Daniel Vandersluis wrote: 
> > > I will try out source: :query, thanks. 
> > > 
> > > In terms of last_job_application, it doesn't use an ORDER, there is a 
> last_job_application_id foreign key on the model. 
> > > 
> > > On Thursday, July 18, 2013 2:16:03 PM UTC-4, Pat Allan wrote: 
> > > Hi Daniel 
> > > 
> > > As for this issue: the short answer is I'm not entirely sure the index 
> definition will always give you the results you're after. Although you do 
> seem to be using MySQL, and that can be a little carefree with its approach 
> to SQL results. 
> > > 
> > > You're asking for the 'last job application' - but ORDER clauses can't 
> apply to joins, and so there's no guarantee that the job application in 
> question for the three attributes is the 'last' one. 
> > > 
> > > That said, a potential work-around: change the new attribute 
> definition so it's in a separate query: 
> > > 
> > >   has job_applications.job_id, as: :job_ids, facet: true, source: 
> :query 
> > > 
> > > That should remove the second join - and while it will involve a 
> separate query, it may perform much better that way. 
> > > 
> > > Give it a shot. 
> > > 
> > > -- 
> > > Pat 
> > > 
> > > On 18/07/2013, at 12:59 AM, Daniel Vandersluis wrote: 
> > > 
> > > > Index: 
> > > > 
> > > > define_index do 
> > > >     indexes 'TRIM(LOWER(first_name))', as: :first_name, :sortable => 
> true 
> > > >     indexes 'TRIM(LOWER(last_name))', as: :last_name, :sortable => 
> true 
> > > >     indexes email, :sortable => true 
> > > >     indexes resumes.document, :as => "document", :sortable => true 
> > > > 
> > > >     has :id, :as => :user_id 
> > > >     has client_id 
> > > >     has updated_at 
> > > >     has is_internal 
> > > > 
> > > >     has location.country_id, as: "country_id", facet: true 
> > > >     has location.state_id, as: "state_id" 
> > > >     has location.city_id, as: "city_id" 
> > > >     has 'RADIANS(locations.latitude)', as: :lat, type: :float 
> > > >     has 'RADIANS(locations.longitude)', as: :lng, type: :float 
> > > > 
> > > >     has last_job_application.source.source_type_id, as: 
> "source_type_id" 
> > > >     has last_job_application.source_id, as: "source_id", facet: true 
> > > >     has last_job_application.application_status_id, as: 
> "application_status_id" 
> > > > 
> > > >     has tags(:id), as: "tag_ids", facet: true 
> > > >     has profiles(:profile_type_id), as: "profile_type_ids", facet: 
> true 
> > > >     has job_applications(:job_id), as: "job_ids", facet: true # THIS 
> IS THE NEW ATTRIBUTE !!! 
> > > > 
> > > >     has candidate_answers(:answer_id), as: "candidate_answer_ids" 
> > > > 
> > > >     set_property latitude_attr: "lat" 
> > > >     set_property longitude_attr: "lng" 
> > > >     
> > > >     # By default due to our has many relationship with resumes 
> documents, MySQL only returns 
> > > >     # the first 1024 characters of the document. This enforces the 
> size during indexing. 
> > > >     set_property group_concat_max_len: 500000 
> > > >   end 
> > > > 
> > > > Models: 
> > > > 
> > > > class User < ActiveRecord::Base 
> > > >   belongs_to              :last_job_application, class_name: 
> 'JobApplication' 
> > > >   has_many                :resumes 
> > > >   has_many                :job_applications, dependent: :destroy, 
> autosave: true 
> > > >   has_many                :candidate_answers, through: 
> :job_applications 
> > > >   has_many                :candidate_profiles, dependent: 
> :delete_all 
> > > >   has_many                :candidate_tags_candidate_users 
> > > >   has_many                :candidate_tags, through: 
> :candidate_tags_candidate_users, source: :candidate_tag, dependent: 
> :delete_all 
> > > > end 
> > > > 
> > > > class JobApplication < ActiveRecord::Base 
> > > >   belongs_to :user 
> > > >   belongs_to :application_status 
> > > >   belongs_to :job, counter_cache: true 
> > > >   belongs_to :source 
> > > > end 
> > > > 
> > > > Please let me know if there's any other model you'd like to see, 
> thanks! 
> > > > 
> > > > On Tuesday, July 16, 2013 8:49:04 PM UTC-4, Pat Allan wrote: 
> > > > Can you show us the index definition and the related associations? 
> > > > 
> > > > On 17/07/2013, at 5:02 AM, Daniel Vandersluis wrote: 
> > > > 
> > > > > I did an explain query, like I said, all the joins are indexed 
> (either as primary keys or actual indexes). In both cases (before and after 
> adding the attribute), it takes milliseconds to execute the query, but a 
> while before all data has been collected. 
> > > > > 
> > > > > 
> +----+-------------+-----------------------------+--------+--------------------------------------------+--------------------------------------------+---------+------------------------------------------------+-------+-------------+
>  
>
> > > > > | id | select_type | table                       | type   | 
> possible_keys                              | key                           
>              | key_len | ref                                            | 
> rows  | Extra       | 
> > > > > 
> +----+-------------+-----------------------------+--------+--------------------------------------------+--------------------------------------------+---------+------------------------------------------------+-------+-------------+
>  
>
> > > > > |  1 | SIMPLE      | users                       | index  | NULL   
>                                     | PRIMARY                               
>      | 4       | NULL                                           | 23754 |   
>           | 
> > > > > |  1 | SIMPLE      | documents                   | ref    | 
> index_documents_on_user_id                 | index_documents_on_user_id     
>             | 5       | prod-2013-05-28.users.id                       | 
>     1 |             | 
> > > > > |  1 | SIMPLE      | locations                   | eq_ref | 
> PRIMARY                                    | PRIMARY                       
>              | 4       | prod-2013-05-28.users.location_id              |   
>   1 |             | 
> > > > > |  1 | SIMPLE      | job_applications            | eq_ref | 
> PRIMARY                                    | PRIMARY                       
>              | 4       | prod-2013-05-28.users.last_job_application_id  |   
>   1 |             | 
> > > > > |  1 | SIMPLE      | sources                     | eq_ref | 
> PRIMARY                                    | PRIMARY                       
>              | 4       | prod-2013-05-28.job_applications.source_id     |   
>   1 |             | 
> > > > > |  1 | SIMPLE      | tags_users                  | ref    | 
> index_tags_on_user_id                      | index_tags_on_user_id         
>              | 5       | prod-2013-05-28.users.id                       | 
>     1 |             | 
> > > > > |  1 | SIMPLE      | tags                        | eq_ref | 
> PRIMARY                                    | PRIMARY                       
>              | 4       | prod-2013-05-28.tags_users.tag_id              |   
>   1 | Using index | 
> > > > > |  1 | SIMPLE      | profiles                    | ref    | 
> index_profiles_on_user_id_and_profile_type | 
> index_profiles_on_user_id_and_profile_type | 5       | 
> prod-2013-05-28.users.id                       |     1 | Using index | 
> > > > > |  1 | SIMPLE      | job_applications_users      | ref    | 
> index_job_applications_on_user_id          | 
> index_job_applications_on_user_id          | 5       | 
> prod-2013-05-28.users.id                       |     1 |             | 
> > > > > |  1 | SIMPLE      | job_applications_users_join | ref    | 
> index_job_applications_on_user_id          | 
> index_job_applications_on_user_id          | 5       | 
> prod-2013-05-28.users.id                       |     1 | Using index | 
> > > > > |  1 | SIMPLE      | candidate_answers           | ref    | 
> uidx_on_candidate_answers                  | uidx_on_candidate_answers     
>              | 5       | prod-2013-05-28.job_applications_users_join.id | 
>     8 | Using index | 
> > > > > 
> +----+-------------+-----------------------------+--------+--------------------------------------------+--------------------------------------------+---------+------------------------------------------------+-------+-------------+
>  
>
> > > > > 
> > > > > The join is exactly the same except for the alias: 
> > > > > 
> > > > > LEFT OUTER JOIN `job_applications` `job_applications_users` 
> > > > >     ON `job_applications_users`.`user_id` = `users`.`id` 
> > > > > LEFT OUTER JOIN `job_applications` `job_applications_users_join` 
> > > > >     ON `job_applications_users_join`.`user_id` = `users`.`id` 
> > > > > 
> > > > > 
> > > > > 
> > > > > On Tuesday, July 16, 2013 2:12:02 PM UTC-4, Pat Allan wrote: 
> > > > > Hi Daniel 
> > > > > Any slowness in indexing is going to be related to the generated 
> SQL query - when you say the query itself seems fast, how are you comparing 
> it? I'd recommend running it through EXPLAIN to get some idea of what could 
> be causing it to be slow. 
> > > > > 
> > > > > Is there any way in which the join is different beyond the aliased 
> name? 
> > > > > 
> > > > > As for upgrading - I'm not sure if there's been any changes 
> related to query generation, but using the latest releases is always 
> recommended (in this case, 2.1.0). 
> > > > > 
> > > > > Cheers 
> > > > > 
> > > > > -- 
> > > > > Pat 
> > > > > 
> > > > > 
> > > > > On 17/07/2013, at 3:09 AM, Daniel Vandersluis wrote: 
> > > > > 
> > > > > > Is there any reason an index would suddenly take 3x as long to 
> index after adding an extra has_many attribute to the index definition? The 
> query itself is completely indexed, and takes about 1.5ms to run (plus data 
> collection time, there are about 200k records in the main table that is 
> being indexed, plus a bunch of attributes - sphinx reports it as a 466MB 
> index). Prior to adding the extra attribute, indexing took about 9 minutes, 
> and now it takes 29. The new attribute averages just over 1 record per row, 
> with a maximum of 78. 
> > > > > > 
> > > > > > Possibly related is that adding the new attribute causes the 
> query TS generates to add a duplicate join (with a different alias) to a 
> join that's added by a different attribute (however as mentioned the query 
> itself seems to be fast). 
> > > > > > 
> > > > > > I'm using ThinkingSphinx 2.0.11 currently - would updating to 
> TS3 help? 
> > > > > > 
> > > > > > -- 
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> > > > > >   
> > > > > >   
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > -- 
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> > > > >   
> > > > >   
> > > > 
> > > > 
> > > > 
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> > > 
> > > 
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