similar to: find() and SQL functions

Hi everyone, I am desperately looking for a method to interpolate strings within an SQL statement as follows: I get a lot of rows out of a database (in my example POSITION_to_ZIPCODE Database with holds records for German ZIP Code <--> Gauss-Krueger Coordinate System ) and want this to be selected and computed individually row by row as follows: library(RODBC) channel <-

I''m trying to get the following statement to work using variable substitution (it works if hard-code the where (med_type) param in the inner SQL statement): med_type = ''game'' @mediaformats = MediaFormat.find_by_sql("select * from media_formats where media_formats.media_type_id = (select media_type_id from media_types where media_type = ?, :med_type) order by

Full_Name: Clay B Version: 2.5.0 (2007-04-23) OS: Solaris Nevada Build 55b Submission from: (NULL) (65.101.229.198) I find that running this script causes R to segfault reliably. However, running just for one system at a time (modifying the for loop updating iter to run just for a system at a time works). The system is a Sun W2100z with 12 GB of ram, and R segfaults using only around 360 MB of

Hello, I have 2 tables table colors : +----------------------+ | id | user_id | name | +----------------------+ | 1 | 1 | test1 | | 2 | 2 | test2 | | 3 | 3 | test3 | +----------------------+ table users : +----------------------+ | id | enabled | name | +----------------------+ | 1 | 1 | bob | | 2 | 1

Is there a proper way of doing inner selects in rails. Basically, I run in issues where I need the count of a query and end up using find_by_sql. I was wondering if there was any elegant way of doing such queries. Roland -- Posted via http://www.ruby-forum.com/.

Hi everybody, I''m trying to change my current forms in my app to remote_forms. It was my understanding that remote_form_for and form_for work in the same way, so I just wanted to change the methods. My code looks like: <% form_remote_for :post, :url => posts_url do |f| %> <%= render :partial => ''form_posts'', :locals => {:f => f} %> <%=

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

How can i run and get the value from the following sql: select avg(my_field) from my_table where which_year=''0506'' and which_week <= 21 and my_foreign_key_id=10 cheers -- Posted via http://www.ruby-forum.com/.

Hopefully an easy one, how do I merge two or more SQL query results? Example: result1 = find_by_sql(x) result2 = find_by_sql(y) What is the best way to merge result1 and result2? I want to be able to reference the objects as if they were obtained via one query. Cheers, Dan

Hi there, I''m puzzled by this apparently simple query I can''t manage to reassemble using ez_where plugin. cond = Caboose::EZ::Condition.new :my_table do start_on < Time.now any {end_on > Time.now; end_on.nil?} end I keep getting the following result : >> cond.to_sql => ["my_table.start_on < ? AND (my_table.end_on > ?)", Tue May 23

...if that is possible My task is to find the longest streak of continuous days a user participated in a game. Instead of writing an sql function, I chose to use the R's rle function, to get the longest streaks and then update my db table with the results. The (attached) dataframe is something like this: day user_id 2008/11/01 2001 2008/11/01 2002 2008/11/01 2003

I want to show a users entries based on there login id. I have tried this: View: <div id="myfish"> <%= render :partial => ''myfish'', :locals => {:user => session [:user].id } %> </div> Partial: <% for entry in @entries %> <table border ="0" CELLSPACING="0"> <tr class="<%= alternate

Hello all. I am trying to get the following SQL to work in Ruby on rails and Oracle. SELECT bugsheet.*, bugcomplete.bc_time FROM bugsheet, bugcomplete WHERE bugsheet.bs_id = bugcomplete.bc_id AND bugsheet.bs_patchrel like ''5.1.12-B4%'' ORDER BY bs_cdate DESC, bc_time DESC If I type that into an SQL program it works fine, if I try and use the following in RoR:

Hello, I have a situation where the foreign key into a table doesn''t correspond to that table''s primary key: my_table ------------- id (pk) name ... other_table -------------- id (pk) my_table_name (fk references my_table(name)) ... I want to be able to say something like: class OtherTable < ActiveRecord::Base belongs_to :my_table, :foreign_key => { :my_table_name

So, under Sqlite2, if I want to update a database''s schema, I have to dump the DB, modify the table''s structure, then go and modify EVERY insert statement. The insert statements look like (from memory): INSERT INTO my_table VALUES (''some_id'', ''some_val'', '''', '''', '''', ''some_other

Hi, Every once in while I have to run SQL by hand, in my models mostly. But I''m wondering if there is a better way of doing it than I do. And, I have a question concerning types of the fields in the result the query produces. First, about the types. In a certain model, to get and return the value of a boolean function, I have to do: result =

I keep some sensitive information encoded using MySQL''s ENCODE and DECODE commands in the database table. -- example SQL: SELECT *, DECODE(ccnumblob, ''salthere'') AS ccnum FROM customers WHERE id=2; UPDATE customers SET ccnumblob = ENCODE(''4321432143214321'', ''salthere'') WHERE id=2; INSERT INTO customers (name, ccnumblob) VALUES

Hello, can search with following SQL Statement: def execute_search @result = Search.find_by_sql ["SELECT * FROM customers WHERE firstname LIKE ? LIMIT 10",params[:firstname]] render :template => "search/resultlist", :layout => false end My question is, how do I use 2 or more Parameters - and with the "%"? (I Like to use SQL-Statements because

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

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