similar to: belongs_to with foreign keys that reference non primary key columns

I have not found anything about this except the following from the DBI documentation : Bind variables: the interface is heavily biased towards queries, as opposed > to general > purpose database development. In particular we made no attempt to define > “bind > variables”; this is a mechanism by which the contents of R/S objects are > implicitly > moved to the database during SQL

Hello, How can I save an ActiveRecord without trigger before_save, after_save, etc? Thanks for the help. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group,

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

Hi, could you suggest me how to handle this in a proper way? I have a table which has othertable_id column (relationship is belongs_to) Problem is, that sometimes there is a NULL value and table.othertable.foo returns an error... what should I do about it? change something in model? in view? or just add "unknown" row to othertable and update table.othertable_id with id of this

...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

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

Hey list, suppose I have several dates in a database-table, where these dates are marked as 'set' or 'not set'. If I do something like : SELECT ID FROM my_table WHERE client=clientID AND set=yes and this query results in several rows and thus several ID's like "2 5 7 11 13 14 17"... How can I iterate over these values ?? Something like : for each item in ARRAY {

Adding a column to a table just places the column at the end, but I like to keep related columns together. Is there a way to specify where the column is added in a table with migrations? For example, in MySQL you can do: ALTER TABLE my_table ADD COLUMN new_column INT AFTER other_column I was hoping migrations would support something like this: add_column :my_table, :new_column, :integer,

Hello, I am new to R progaming and have just started using this program since last week. What i want to achieve is to use R to determine patterns in sales/ customer complaint etc. information located in a mysql database. I am not sure how to approach this or which technique i should use to do so. However, i had proceeded to add a dataset to RStudio using the following code: library(RODBC) 

https://bugzilla.netfilter.org/show_bug.cgi?id=1226 Bug ID: 1226 Summary: Segmentation fault when printing a rule checking byte zero of NFT_PAYLOAD_LL_HEADER Product: nftables Version: unspecified Hardware: x86_64 OS: Debian GNU/Linux Status: NEW Severity: normal Priority: P5

Hi there ! I try to figure out how to do something like this in Rails : SELECT * FROM my_table WHERE name LIKE ''GOGONAM%'' My problem is the % and the quotes. >From now, I do like this : searched_name = params[:name]+''%'' user = MyTable.find(:all, :conditions => ["name LIKE ?", searched_name]) But is there a more gracefull way to do a LIKE

Hi guys, I have a situation here. I have my project set to no pluralization due to legacy tables in environment.rb. Now, I have some new tables which I''m starting to pluralize. When I do a generate a scaffold to this new table: script/generate scaffold my_tables table it seems to work out fine for certain sections like http://mysite.com/railsapp/new (which also inserts properly to

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/.

Hi, two questions - I think simple to solve for you ... (1) I've written a function containing some loops. Each loop will generate a few outputs. Finally I have to combine them to get something like a "spreadsheet" that my colleagues can import in EXCEL. Up to now I'm doing it as follows: With each loop-step I assign new values for each "column" of my desired output

Hi, I am new at R, and I need some help with some basic stuff. I want to do clustering of data. It works perfectly, but now I want to export my file form R to my Linux directory. The problem is that the file is generated only with the cluster numbers, but it does not carry over the identifiers. Let me show you what I did : 1. demo<-read.table("my_table", sep=",",

Hi, Where to put the execute statements in migration scripts? e.g, I would like to create a table and add a foreign_key reference. def self.up ?? execute "alter table ...." create_table :my_table do |t| t.column :user, :string end ?? execute "alter table ...." end Should the execute statement be above the table creation or below the table creation? Logically I

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/.

I''m having fun composing queries with ez_where, but am stuck on how to formulate the following using the ez syntax: (begin_date >= ? OR end_date >= ?) AND (description LIKE ? OR name LIKE ?) There are two clauses, each containing OR operators (the ez ''any'' syntax) but both clauses must evaulate to true for a match. Can anyone suggest the proper way to construct

Hello, So I''ve realized one of the columns in a table has to be binary instead of text. However, a straightforward change_column :my_table, :my_column, :binary fails under PostgreSQL (9.x series) The error message being: PGError: ERROR: column "my_column" cannot be cast to type bytea : ALTER TABLE "my_table" ALTER COLUMN "my_column" TYPE bytea Now

Hello again, I guess this is more of a Ruby question, but here goes anyways... I want to intercept all calls to non existent class methods and then call an existing class method with the non existent name. In code... class MyModel < ActiveRecord::Base def MyModel.method_missing(symbol, *args) MyModel.func(symbol.id2name) end def MyModel.func(func_called) puts "You