similar to: Returning Count from find_by_sql

Hello, I was wondering if there was a method in Rails that returns the sum of a column. For example, I have a column called ''score'' and writing a SQL statement such a ''select sum(score) from table_name'' does return the sum of the values in the column. In the past (not too long ago being a newbie), I defined all sorts of methods only to discover that Rails

Hi All, I am inserting data from one table to another by using following method @data=RoyaltyReportFiles.find_by_sql("insert into royalty_reports (artist_name, album_name) select artist_name, album_name from temp_royalty_reports where id=328417") it saves the data into royalty_reports table but it gives following error and application crashes. i am using rails 1.2.5 You have a nil

I am trying to find the count of rows on a table. If I do a result= Table.find_by_sql ("select count(distinct id) ...... It returns an array of Table with Hashes of "select count(distinct id)" making accessing it a pain result[0][''select count(distinct id)''] It seems easier to return all the rows and do a .length on the result Array.

Model: class AdminQueue < ActiveRecord::Base set_table_name ''adminqueue'' end Interacting with it in script/console >> AdminQueue.new => #<AdminQueue:0x240a910 @attributes={"topic_id"=>nil, "resolved"=>nil, "updated_on"=>nil, "action"=>nil, "type"=>nil, "post_id"=>nil,

When using PHP, I was able to enter a query against my list of invoices such as : Select SUM(amount) from invoices where project="123" This would give me the total amount of all invoices for project 123. In rails, how would I do this? I tried using "find_by_sql," but couldn''t figure out how to extract the results out of this. Thanks!

Hello people, just wanted to know how to actually test returned value from sql statement like : @alreadyused = Promotioncodes.find_by_sql [ "select alreadyused from promotioncodes where id = ?", @codeid ] I would like to check whether @alreadyused has value 1 or 0 It doesn''t seem a simple if @alreadyused would word ... Regards Joel

Hello, I''m new to Ruby & Rails, and I''m trying to figure out if this behavior by ActiveRecord is by design, or if I''m doing something incorrectly. Here''s the deal: I have a class based on ActiveRecord::Base that defines a method that creates a query using find_by_sql(). The fields retrieved by joins with other tables are being returned as Strings,

Why would I get an undefined method `find_by_sql'' for #Example: 0x981a4e4> for error when trying to use the find_by_sql method in my model? def init_dictionaries tables = find_by_sql( "SHOW TABLES FROM thesaurus" ) @@tables = tables.collect{ |t| t.Tables_in_thesaurus } end -- You received this message because you are subscribed to the Google Groups "Ruby

Hello all. I am trying to do the equivalent of: @componentlogs = Componentlog.find(:all, :conditions => [ "cl_compname like ?", @criteria ], :offset => offset, :limit => items_per_page, :order => "cl_spr DESC" ) in a find_by_sql statement. I cannot use the build in because the adaptor isn''t quite right (OCI8) When I use it I get the following error

Ok now that I have find_by_sql love working for my "Top 10 List" I want to make them a bit more DRY. Tis is what I have so far: Model: def self.topfish find_by_sql["select species.name, length,species.multiplier*length as score,caught_on from entries join species on species_id = species.id where species_id = ? order by score DESC LIMIT 10", species]

I tried to use named parameters in my SQL query , using find_by_sql Order.find_by_sql ([select * from orders where amount > ? and quantity > ?", [ @amount, @quantity ] works;.. but Order.find_by_sql ([select * from orders where amount > :amount and quantity > :quantity ", [ :amount => @amt, :quantity => @qty ] is not working a I wrong or should I use a plain select

I have run into a very strange problem discovered through the use of the acts_as_taggable plugin, but related to quoting/sanitizing the interpolated list in a find_by_sql. Apologies for the length, but I wanted to be complete. ;-) The method from acts_as_taggable.rb is: def find_tagged_with(list) find_by_sql(["SELECT #{table_name}.* FROM #{table_name}, tags,

I was trying to do SUM based mySQL query simliar to the following: SELECT SUM(updated_on - created_on) AS total from signups If I were to run this command in the mySQL console I would get a result. However, if I were to run it using the following command in Rails: Signup.find_by_sql("SELECT SUM(updated_on - created_on) AS total from signups") The query that is written to the log is:

When you use find, you can include related objects with include so that both objects get instantiated in the results, e.g. Foo.find(:all, :include => :bar). But when you use find_by_sql, is there a way to do this? You could definitely write the find_by_sql SQL to join Foo and Bar tables: Foo.find_by_sql("SELECT foo.*, bar.* from foo, bar where foo.bar_id = bar.id") But is there a

Is a find_by_sql query cached with memcached and cached_model (http://dev.robotcoop.com/Libraries/)? Looks like the answer is no. Is there a reason for this? I have a lot of very complicated querys with a lot of unions, subquerys and joins that would greatly benefit from the cache. Going through the code I can see that the find_by_sql method is changed in cached_model.rb, but it does not call

My find_by_sql is not returning attributes of the calling model class. Thermo.find_by_sql("SELECT COUNT(*) FROM thermo WHERE thermo_loc = ''back'' GROUP BY DAYOFWEEK(time_on) ASC") # ==> [#<Thermo >, #<Thermo >, #<Thermo >, #<Thermo >, #<Thermo >, #<Thermo >, #<Thermo >] The sql is fine and when I checked it in a mysql

Hi In controller I have this query: @price_stat = Price.find_by_sql("select id, cost, tour_id, unix_timestamp(created_at) from prices") when I try to display result''s created_at column I don''t have any results: <% @price_stat.each do |p| %> <p><%= p.created_at %></p> <% end %> result is empty But if I try without unix_timestamp. ie:

I''m no good at SQL and I have a question that will hopefully be fairly easy to answer. I''m using acts_as_paranoid which instead of deleting a record adds a deleted_at column with the datetime the row was deleted. I want to have a find_by_sql filter out any row where deleted_at is not null. I have (at least the relevant parts): #a couple working filters here. filters <<

Does anybody know how to paginate a find_by_sql query? Unfortunately I need to paginate a query which is next to impossible for ActiveRecord or just too much of a pain to implement. So I''m using find_by_sql. However, I anticipate a large number of rows returned eventually. So I may need paginate. Does anyone know how? Thanks Phillip Novess http://primalart.net

When i run find_by_sql the extra fields not in the Model are returned as Strings. What is the correct way to convert all the extra fields to their correct type? Is there a way to somehow define these extra fields in the Model class to ensure they will always be returned correctly? Or is their a better method. I will be using find_by_sql a lot so a clean solution would be good. (I am using