On 21 December 2011 14:47, Michael M. <[email protected]> wrote: > I have a Rails application that is set up to use a MySQL database for > most of its data but I have a need to pull in data from a SQL Server > 2008 instance as well. This holds our data for Microsoft's CRM and GP > and therefore cannot be pulled into the MySQL database. So I set up a > database configuration in config/database.yml for the connection to this > server and the connection seems to work just fine. > > With that said, I have a couple of queries that I need to execute on > this database which joins together two tables and pulls columns from > each table. So I set up a model file for one of the tables like the > following... > > -------------------------------------------------------- > class Sop10200 < ActiveRecord::Base > self.establish_connection :gpconn > set_table_name 'SOP10200' > > def self.invoice_items(invoicenmbr) > select('RGI_ENTLMT,RGI_LICLTH,RGI_PRVENTLMT,ITEMNMBR,QUANTITY,ITEMDESC'). > joins('INNER JOIN RGI10200 ON (RGI10200.SOPNUMBE=SOP10200.SOPNUMBE > AND RGI10200.SOPTYPE=SOP10200.SOPTYPE AND > RGI10200.LNITMSEQ=SOP10200.LNITMSEQ)'). > where('SOP10200.SOPNUMBE = ?', invoicenmbr) > end > > end > -------------------------------------------------------- > > The first three columns in the select statement come from table RGI10200 > and the last three come from SOP10200. The query executes and returns > without any errors, but when I do an inspect on the results that come > back, I realized that the tables from RGI10200 were missing. If I were > to switch them and create the model class around RGI10200, then the > fields from SOP10200 are missing. Any idea why I am missing fields from > the results? > > To make sure it was sending the correct query, I copied the query that > gets put into the development log and used that in a DB client connected > to the server with the same credentials and it comes back with all the > fields present. I also verified using a packet capture that the data is > in fact coming back to the Rails system with all of the columns > populated. So it isn't the query formation or the DB server giving me > back the data I ask for.
I guess the problem is that the select statement returns a collection of Sop10200 objects, so there is nowhere to put the data from the other table. Normally in rails one would have relationships between the tables so that the joined data has somewhere to go. find_by_sql might help, have a look at http://www.railsrocket.com/find_by_sql. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
