Rails ambiguous column. It might be better to encapsulate it in the Report model.

Rails ambiguous column In number_of_payments_in, you The Model Bug (AR, Rails 4. 12. Samuel Hulla. As we're grouping on both attributes from Rails 5 series | We now don't have to provide a table name in quoted string for fetching fields which are present in join table as well when used with group by clause. Improve this answer. I've looked into them, but not found them to give me much power over raw SQL, except in the case that database independence is crucial. Example fix: create function influence. ActiveRecord many_to_many association confusion. `created_at` = `users`. 3 comments. I ran rake db:migrate and even tried rake db:drop:all, rake db:create:all and then rake db:migrate and it still didn't change anything. Given that I already have a DataFrame with ambiguous columns, how do I I have a Release model with medium and country columns (among others). If you put the "main" statement into a derived table, you can use the alias: SELECT * FROM ( SELECT (field_a + field_b + field_c) AS virtual_field, entities. group(:author_id). find method. If not then create a new one to add the column – I have a table containing 2 "uncommon" columns - order and like. /db/data/cities_extended. Commented Jul 1, 2016 at 8:52. Sign in Product active record select - ambiguous column name. MySQL - Unknow Column in field list. See Reflecting Database Objects - Overriding Reflected Columns of SA documentation for more information. ", it returns this error PG::AmbiguousColumn: ERROR: column reference "name" is ambiguous. I am developing a Rails web app. 2 - conflicts `author_id` in both projection and group by: ```sql SELECT COUNT(*) AS count_all, author_id AS author_id The default for foreign keys is singular, you've got it the wrong way in your table. Rails 3 ambiguous column names and multiple order scopes . My guess is that, unlike in the number_of_payments_in method, in the self. g link. Summary It is possible to query for models with a result that has duplicate columns. 2 by: rails/rails#35360, and rails/rails#35441 to test a fix to an issue in the Rail Saved searches Use saved searches to filter your results more quickly I'm trying to make an sql query using activerecord and I'm having a hard time specifying a specific column from multiple joined tables. Add a comment | Your Answer Reminder: Answers generated by artificial intelligence tools are not allowed on Stack I'd like to use default active record id column in the entity. ' in it, e. Add reaction Like Unicorn Exploding Head Raised Hands Fire Jump to Handling Ambiguous Column Names. sql-server; Share. Table B and C have their Ids as FK in table A. This is not a good solution because it won't work with nested joins. Anyway that I could have @document. `updated_at` I can accomplish it using Arel with the following: arel_where = User. Ambiguous column name 'CustomerId' You're getting this because you're selecting CustomerId without specifying which table to take it from. A number of the Rails tests fail with TinyTds::Error: Ambiguous column name 'id' (or something similar). Ruby on rails Active record select returns always id. As such I create has_many or has_one associations that have conditions clauses. left_outer_joins(:list_users). Sometimes ActiveRecord complains that the column 'id' is ambiguous, and I have to agree :-) This only happens however, when the data in the database is 'sparse'. Mysql2::Error: Column 'driver_id' in field list is ambiguous: SELECT COUNT(*) AS count_all, driver_id AS driver_id FROM users INNER JOIN tip_travel_times ON tip_travel_times. db doesn't have id column. some_item. I would expect that ActiveRecord would alias the table the second time it is You probably have some default scope on User that joins user_languages, and there is created_at column in both of these tables. (column "posts. ankit2584 June 22, 2008, 11:37am 1. rb file to include all of the comments. I am trying to query, outer join the 3 and count a column cId in A. what is causing this? 0. Whether to automatically add a primary key column. There are two different solutions. In addition to providing migrations support for adding table and column comments, the gem also annotates the schema. I'm guessing the with_households scope looks at another table which also has an email field. [ID] ,[Description] FROM [Events] as ev LEFT JOIN [Units] as un ON ev. 0, it was only included when joining invoices, and then the query worked fine. Rails Activerecord Ambiguous column name on . This column name exists on 3 of your tables (UserRoles, Sitesand Customers), one of which you're joining to twice (Customers c and Customers rc). id FROM object_items LEFT OUTER JOIN object_groups_object_items ON object_groups_object_items. SINVOICE, PROD. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with At the end of the day I need the results to be unique and sorted. id | name | email | id | rank | user_id 1 | 'pari' | '[email protected]' | `rank_id`| 12 | 1 rails db sqlite> . id = keywords. person_info(user_id integer) returns setof influence. def up change_column :table_name, :column_name, :new_type end def down change_column :table_name, Maybe there is a status field in requestors table? That should be a reason, because by joining you are firing a select statement that references both tables. ActiveRecord::StatementInvalid: PG::Error: ERROR: null value in column "id" violates not-null constraint. Postgres weird PG::UndefinedColumn: ERROR: on value. Viewed 579 times 0 I have created a few rails apps, some were production, some just for fun. not(users: { id: user. start_date. g. Why my rails app shows nested table's id but nested column? 1. We have an import script that fills up these tables, and the more data is Firstly, there's no reason to call select twice - only the last call will actually be used. The issue happens when joining (or eager_loading, or includeing if it chooses to use JOINs). where("jobs. locations and states both have column 'name'. Find and fix vulnerabilities Codespaces. You can fix it by changing your query to: You can fix it by changing your query to: I traced it and it was coming from @issues = @project. But this level of flexibility can lead to ambiguous queries. time as client_time FROM orders o INNER JOIN clients c ON c. It will not know which to use. select * from t1 where id in (select id from t3 where a = 'aa'); While executing the second query it will select column "a" from table t1. joins(:author). But this doesn't seem Ambiguous column names In one case I use a module to define some common scopes that are used across more than one model. In Rails 5. As we know that both the tables t1 and t2 have same column name but the preferences given to local column. (It doesn't help with column name changes though. – user1158559. order('users. So, for the fist case (self-refferal join), ActiveRecord will generate this query: SELECT keywords. Rails - Ambiguous column name: id. city or weather. BandsOnABudget. VIGNESH B VIGNESH B. This is giving ambiguous column error. – Daniel Viglione. Update your scope with this, that should take care of the ambiguity. After updating a few apps to Rails 3 I came across some issues with the new scoping syntax. belongs_to with different The where clause with the comparison operator doesn't raise an exception when ActiveRecord::Relation uses ambiguous column name. values. I also noticed that you have the question id extraction logic outside the model. count` will produce: * Rails 4. rb: filter :travel_car_brand, as: :string Skip to main content How to fix ambiguous column reference in Rails has_many through join. Instead, use explicit naming for the extra columns that you need: MyData. Follow edited Jul 23, 2018 at 17:40. Same scenario here as well. For background, widgets is the main table, The first query will take t2 table's "a" column while executing the query. first_or_create Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Rails ActiveRecord select usage. SQLite3::SQLException: ambiguous column name: microposts. NUM_0 mysql ; sql; database; Share. When you actually have something there, you might not be able to revert a migration with for example, a remove_column if you did not specify the type of the column you removed. 3k 10 10 gold badges 27 27 silver badges 47 47 bronze badges. The problem of your query is t2 and t3 both tables have a column called id. How does rails find the column alias in select statement? Hot Network Questions The goal of this ear training (voice leading) material Will running a dehumidifier in a basement impact room temperature? Can Mysql2::Error: Column 'created_at' in field list is ambiguous: SELECT COUNT(*) AS count_all, Mysql2::Error: Column 'created_at' in field list is ambiguous: SELECT COUNT(*) AS count_all, Skip to content. Where are two typical cases: CREATE TABLE keywords Another possible solution is to add a check when doing joins and raise an exception in case of a join already exists in that relation. 3. Then do the opposite. start_date or SL. Ask Question Asked 8 years, 10 months ago. In this case, <Article id: 1, name: "article name", is expected and I think this is dangerous. answered Apr 8, 2013 at 17:34. created_at >= ?", As we can see user_id has conflict in both projection and GROUP BY as they are not prepended with the table name posts in the generated SQL and thus, raising SQL error Column 'user_id' Today I face with incorrect behavior in ActiveRecord. Hi all, I’ve got an issue where i have a search page that passes a field which is then used as the criteria of the search. client_id when doing the same in ActiveRecord query language, all the sources suggest something like this: When you perform a join ascending on id becomes ambiguous column because both components and collections have id column. city). `name` AS t0_r1, I guess it is due to column ambiguity created by default_scope present in model to order it by created_at which is present in both associated tables. 1) Ruby version: 3. Ambiguous column names and ActiveRecord query syntax. I don't care what columns are used in the SELECT statement, what appears in the ORDER BY, etc. rails console- > Article. "type" = 'ItemInvoice' condition is included both when joining invoice lines and when joining invoices. I quickly came up against the ambiguous We bumped GitHub to test Rails 6 and had a bunch of failures. On Postgres you should instead use DISTICT ON(user_id) as it will not allow the above query: just because you called that column id which is no way to access it. SELECT ev. I can see the timestamps macro I'm sure I saw a post about this topic a while ago, but I haven't been able to find it again. Now I want to create an app that will be somewhat complex and there will be heavy usage of joins. class People belongs_to :salutation end. Do you have ouststanding migrations? Run them. object_item_id = object_items. * FROM "microposts" LEFT OUTER JOIN question_answers ON question_answers. You should make your select statement more explicit e. person_object; begin select Rails. Host and manage packages Security. Many to Many relations with the users. Please read the following warning for Rails 3 applications: Rails 3 Warning. ActiveRecord::StatementInvalid: Mysql2::Error: Column 'created_at' in order clause is ambiguous: SELECT `mobile_applications`. tracking_url ) nil is always returned. Follow asked Jan 9, 2018 at 13:45. I have an inherited database (hense the wacky column names) that looks a bit like this: customer ----- Customer_ID | name | fleet_size | category 1 'bob' 20 60 category ----- Category_ID | Description 1 'Example Category' Navigation Menu Toggle navigation. About; Products OverflowAI; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Well, no, that's not really the test you want to write. Rahul Tapali Rahul Tapali. Unless they go and check the actual schema of the table in database (rails dbconsole). Rails 3 ambiguous column names and multiple order scopes. Hot Network Questions Which 4x4 grid of white and blue squares is correct? Why is a scalar product in a vector space necessary to determine if Mysql2::Error: Column 'created_at' in order clause is ambiguous: SELECT DISTINCT object_items. Please note that when you use this command: rails generate migration RemoveFieldNameFromTableName field_name:datatype Clearly, rails can make our lives easier by aliasing a column in which 1 is selected, but I'd like to think that it shouldn't have to, as this is more of an issue that is specific to the database. The table are replicated on two databases - MySQL and PostgreSQL. Here is the error: Mysql::Error: Column 'created_at' in where clause is ambiguous: SELEC ActiveRecord::StatementInvalid: SQLite3::SQLException: duplicate column name: description: ALTER TABLE "articles" ADD "description" text Which I presume the problem comes from. it happens when the column name appears many times in resulting table (usually in case of join) e. Skip to main content. foo where foo was the ambiguous field. UnitID = un. Specifically, the :id and :primary_key options work like so::id. document_file_name. group_id AS t1_r2, keywords. Do this You signed in with another tab or window. Share. 93 8 8 bronze badges. Problem is, I've set an AR has_many relationship in the model that joins one table to another - We bumped GitHub to test Rails 6 and had a bunch of failures. id = question_answers. The text was updated successfully, but these errors were encountered: All reactions. where("`like` >= ?", params[:liked]) This will work in MySQL only. And all your column aliases are either t1 or t2 so you will get multiple columns with the same name. object_group_id WHERE PG::Error: ERROR: null value in column "created_at" when inserting records into associated model 1 Join between two tables fails in Activerecord with uninitialized constant error Here is a query for ambiguous columns in two joined tables: SELECT o. id = object_groups_object_items. Rails; SQL; Last updated at 2015-03-13 Posted at 2015-03-13. id LEFT OUTER JOIN object_groups ON object_groups. Stack Overflow. `id` AS t0_r0, `mobile_applications`. Automate any workflow Packages. It's clearly Rails postgres error: ActiveRecord::StatementInvalid Exception: PG::AmbiguousColumn: ERROR: column reference "sample_id" is ambiguous Ask Question Asked 9 years, 2 months ago Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog Using rails 3. has_and_belongs_to_many :categories, association_foreign_key: :categories_id, Who exactly is complaining about that column? pg_dump?pg_restore?Something in Rails? There were some changes in the sequence internals between PostgreSQL 9 and 10, AFAIK all the affected things in Rails have fixes out now. So you should point out on which table's created_at you want to order:. One of them was like this: Column &#39;id&#39; in field list is ambiguous After doing a bisect I found this commit was the cause Now the issue is whenever I enter a name with '. So, by requesting status it is not clear if you mean requestors. And Table C is also a FK in table B. 1, select method with *results in that join table's column data assigned to the attribute which is the same name. "google inc. 7. Follow edited Apr 13, 2015 at 20:14. It take place when I try to use :include parameter for . for instance in sql select go. No id when I add to the database via rails. ) In DataMapper, I have tables like this: Foo === id Integer other_columns Whatever Fuzz === id Integer other_columns Whatever For associations: class Fuzz has 1, :foo, : I have a fairly simple query to return the first record in a many-to-many relation or create one if it doesn't exist. id FROM "categories" INNER JOIN " Skip to main content Rails ActiveRecord: PG::Error: ERROR: column reference "created_at" is ambiguous 2 Rails4 - ambiguous column name and no such column error Now available on Stack Overflow for Teams! AI features where you work: search, IDE, and chat. The ambiguity occurs presumably because you have some conditions referrring to a column name and both tables have that column. Yes, it is possible to rollback a migration with empty (as well as correct non-empty) change method. order ("created_at DESC") これだと以下のようなエラがで I am trying to find if there exists a more Rails-y way to generate the following query # The purpose of this query is to select Users who have not updated # their user record. Second SQL. Provide details and share your research! But avoid . read . eq(User. If you change your table name, this still works. UnitId if Events and Units tables have the same column name (ID) SQL server wants you to use aliases. I have a patch on activerecord-sqlserver-adapter that accomplishes the same thing, but does so in a much uglier way (basically visit the node during the select processing, and append an alias column postgres=# SELECT my_func(); ERROR: column reference "id" is ambiguous LINE 1: SELECT id, name FROM person ^ DETAIL: It could refer to either a PL/pgSQL variable or a table column. You probably want the table aliases before the column name to identify which table each column is from: although I do admit that I didn't initially put that column when I created my table, but I added the column via a separate migration. id AS t1_r0, keywords. It outputs (error) ambiguous column name because it gets confused about where to fetch data from since you might have the same query name "InvoiceID" in two different tables or datasets (check all the tables you have used in where clause, InvoiceID should be in at least two of them). username WHERE users. includes(:state) I am using ilike to How to fix ambiguous column reference in Rails has_many through join. I am using the rails platform. id, sequence. answer_id ORDER BY created_at DESC Ambiguous column in MySQL/Rails find method. asked Since I am on Rails 4 and not the latest version of the adapter I left it and wrote the following (horrible) method as wrapping the column names was not enough, I needed to prefix the table to prevent ambiguous column names. Commented Apr 16, 2018 at 13:03 @RajivSrinivasanR You're welcome,You could mark the answer if it help you :) – D-Shih. SELECT column_name AS alias_name FROM table_name; In a COLUMN ALIAS, the COLUMN alias assignment is declared beside the proper COLUMN name. Just run the command in your console to create the migration. The current approach in You don't get what? You're referring to start_date with no table qualifier, so Oracle doesn't know if you mean PRL. * from animals order by is_parent, age The quick and dirty solution is to tell Oracle to order using column numbers: select is_parent, age, animals. Naming both associations has_many/belongs_to in rails fails . I know I Hi, I am doing a join of two tables with a column with same name in both. For example: Post. @people = I'm not familiar with Ruby on Rails so I'm not sure if my suggestion will help!! Just to be sure the character I mean is this one ` Just to be sure the character I mean is this one ` – JshsterPP Rails - Ambiguous column name: id. Handle this relationship to get only the columns that you need from a relationship. where(category_id: 3, user_id: 5). rb which has many Picture. Yuck I've done this type of statement a bunch of times but it is now telling me that the statement is ambiguous. ) You may end up adding another table to your join that shares a column name with an existing table in the query. If someone from rails core team can decide this, One solution would be to append the desired table name to the field being passed on in search, like my_database. Having trouble with Rails query, ambiguous column name. 10. Improve this question . If you put most of your existing query into an inline view and keep the where clause outside, when the where is evaluated there is no ambiguity - PRL and SL are out of scope, and you can only be referring to the column alias Note that the "invoices". SQL has the intelligence to disambiguate column names if the column name is unique across the current set of tables being touched - hence most of the time you don't need to prefix column names with table names. picture_file_name? Or is this something that should really be overlooked with the gains that Paperclip affords. To correct this kind of error, you should always specify the query with its tables. id AS t0_r0, keywords. I find having to rename the columns cumbersome, for example, if I had selected more columns: select is_parent, age, animals. In this case multiple tables in your SQL contain the "id" column. SELECT BPR_0, BPAPAY_0, BPYNAM_0, BPYADDLIG_0, NUM_0 -- and so on FROM PROD. 0. Naming both associations has_many/belongs_to in rails fails. rails import sql, column mismatch on id. Powered by Algolia Log in Create account DEV Community. created_at DESC') I really don't think the title of this explains well of what I'm trying to do but I'm not even sure how to ask. For example, the I am working with an existing schema and thus limited in how much I can bend my existing column names. James Z. sql Error: near line 41780: table cities_extended has 7 columns but 6 values were supplied Error: near line 41781: table cities_extended has 7 columns but 6 values were supplied The problem is that Postgres is attempting to sanitize/quote the bound values but really you're referencing existing columns in another table. Add a comment | 1 . Rails relationship with same name as column name` 2. In one case I use a module to define some common scopes that are used across more than one model. * I am using plenty scoped searchs in my Rails app (Rails 4) and have got stuck on this issue where I have to use a join clause. Defaults to true. name, sequence. I've this as a scope to return the ticket listing where an tickets task belongs to an account: The ambiguous errors is caused by PG not knowing which name column the query reffers to - contacts. paginate(page: params[:page]). I guess, the user_id column is missing in the goals table. For example, in Oracle: Why do I get "Error: ambiguous column name: Name"? The "Error: ambiguous column name: Name" in SQL happens when the same column name is found in multiple tables or parts of a query, making it unclear which one to use. Railsのモデルで以下のように関連モデルをincludesしてタイトルのようなエラーがでたときの対策です。 book. issues. All other databases I've tested (Oracle, Microsoft, IBM DB2, Firebird) behave like PostgreSQL on this issue. status or meetings. The query also performs a cartesian product , as you have not joined the tables together. After creating the DB, I had faced this issue. sql-server; join; ambiguous; Share. you’ll want to use “AS” in your SQL to refer to it by another name. Using this technique avoids the exact situation in this question. Problem solved. That's bId, cId . Mysql2::Error: Column 'created_at' in order clause is ambiguousの対策. Prefix column Names: Rather Most Rails apps have it, but you can also generate it using a DSL like Arel or Squeel. What you need to do is make the list of posts columns in your select-list match the columns named in your GROUP BY clause. The proper way to deal with that is to simply specify the table names in your query, like I wish there was a way to have it choose the primary table as what is being referenced (90% of the time - here 'events'), unless we specify otherwise - maybe throw a line into console output in dev about it to aid in troubleshooting - but not 'crash' for crying out loud. One of them was like this: Column &#39;id&#39; in field list is ambiguous After doing a bisect I found this commit was the cause 0ee96d I'm working on a Rails 5. class AnalyticsPage < ApplicationRecord belongs_to :graph_page_layout has_many :analytics_pages_users has_many :users, through: :analytics_pages_users has_many :graph_sections end ##### query ##### I need to write I have write down this query in rails 4 result = User. g: like this if i join users table and user_ranks table. * from animals order by 1, 2 This removes the ambiguity in column names. B I am working on a Ruby on Rails application there, AnalyticsPage has the below relations. (these all change based on the filtering options the user has selected), I just care that the top level model/table in the query is unique (based on id). def change change_column(:table_name, :column_name, :new_type) end 2. PostgreSQL is only as strict as the ANSI SQL standard. group_id; Hi all, I've got an issue where i have a search page that passes a field which is then used as the criteria of the search. file_name instead? Secondly, I have Gallery. class Salutation has_many :people end. You could say that the only reason this works on MySQL is its allowance for potentially ambiguous queries - it does not comply to the SQL 1999 or 2003 standard. . Perfect for my company's needs (large legacy rails app where the database model is ambiguous and also shared with a team of analysts writing native SQL reports). HuuTrieu1999 linked a pull request Oct 8, 2024 that will close this issue Fix issue-53229: This answer may be a bit vague as it's not clear from your question which class the self. You can either change it in the table to category_id and list_id, or specify the non-standard fkeys in your habtms (setting both :foreign_key and :association_foreign_key options on both sides), eg. Open Copy Msg 209, Level 16, State 1, Line 1 Ambiguous column name 'userid'. Rails 5 solves ambiguous column issue. SELECT `users`. Each Employee has a WorkId (1 through 5). Secondly, you should not be using select("*"), because the SQL database (and Rails) will not rename the ambiguous columns for you. Ambiguous column names. unknown column mysql where clause - but I can access and set it within my app. 1 project which required the indexing and searching of Project records by values of the record's fields, and by the existence of a connected Category record (Project has and . QUERY: SELECT id, name FROM person CONTEXT: PL/pgSQL function my_func() line 3 at RETURN QUERY Msg 209, Level 16, State 1, Line 3 Ambiguous column name 'NUM_0'. search method you haven't specified an appropriate table in the where call. This is the code I have written so far, SELECT OrderD Msg 209, Level 16, State 1, Line 3 Ambiguous column name 'CaseID'. It might be better to encapsulate it in the Report model. Loadin rails g migration sample_name_change_column_type Step 2: Go to /db/migrate folder and edit the migration file you made. id Handle this relationship to get only the columns that you need from a relationship. rails schema. The where clause with the comparison operator handle proper precision of the database columns. id = o. Possibly, but that's a complicated (and therefore not the best) solution to your ambiguous column problem. class AddUserRefToGoals < ActiveRecord::Migration def change add_reference :goals, :user, index: true end end If two things share the same name, this is where the ambiguity steps in. So I have ticket has_many tasks and task belongs_to account. Preface that specific name with the name of the table you want that value to be from. Frederick_Cheung (Frederick Cheung) June 22, 2008, 9:44am . Clients ; Services; Blog; Contact Us. class AnalyticsPage < ApplicationRecord belongs_to :graph_page_layout has_many :analytics_pages_users has_many :users, through: :analytics_pages_users has_many :graph_sections end ##### query ##### I need to write Mysql2::Error: Column 'created_at' in order clause is ambiguous これは、どのモデルの created_at か分からないよとおっしゃっているそうです。 なので、以下のようにテーブル名を明示すれば大丈夫です。 Rails - Ambiguous column name: id. 5. Can I avoid having @picture. select("id, (3959 * acos( cos( radians("+latitude+") ) * cos( radians( latitude ) ) * cos( radians( longitude ) - radians("+longitude+") ) + s Skip to main content. I have this association: has_many :sections, :class_name => "QuestionnaireSection", :order => "position", :dependent => :destroy, :include => :questions but since the Question object has a position column, the query comes back with Mysql::Error: Column 'position' in order I am trying to create a query based on trying to find a value in one column of a table based on the values of another column in another table. includes (:author) book = book. There is no way for a newbie to know for the fact that a column named id has been created by default as a primary key. Why does it recognize as Unknown Column? 0. However, when I query the specific attribute (e. It is neither reflected in migration file nor the schema. "id" = "posts". driver_id = users. To keep away from errors and guarantee precise query results, developers can utilize a few systems for taking care of ambiguous column names: Utilize Table Aliases: Assign aliases to tables in the query and qualify column names with these aliases to explicitly indicate which table the columns have a place with. It says that - when you select rows from two (or more) tables that have columns with the same name, the SQL engine doesn't know which table's column you meant to use and it is ambiguous to it. The code below worked fine in Rails 3 but it throws an error: ActiveRecord::StatementInvalid: SQLite3::SQLException: ambiguous column name: id: SELECT "categories". Or maybe you have a default_scope which does the same. I do not think this is what you intended as both tables have a productVersion column so the query parser does not know which you intended to use. And I think the way it's set up it doesn't matter if there is not a table called authors, all it's doing is adding a column called author_id. you have good answers below, but I cant help thinking that you could find this out by yourself if you just googled with the title of your question – GuidoG. You switched accounts on another tab or window. On Rails 6. "user_id" LEFT OUTER JOIN "users" ON "users". SINVOICED WHERE SINVOICE. Modified 8 years, 10 months ago. id SELECT "microposts". Check out our latest product NeetoCal. id: SELECT "posts". question_id = microposts. joins('JOIN (SELECT. scope :created_this_week, -> { where("vacancies. Skip to content. x) thus has, among others, two associations assigned_to and responsible, which are resolved to the foreign keys assigned_to_id, responsible_id. I am running this query to get all the locations @locations = @account. status – Ruby Racer The name was ambiguous because both tables have a city column, and the database engine doesn't know which city you mean (it doesn't automatically know if it needs to use cities. 0. I have a class Company which has many Employees. And i need same app to connect to both databases and use same query on both: PageModel. What happens when you inline the named columns (hence not bind values) that you insert into the query placeholders of ?. So Project has_many :issues, dependent: :destroy, order: "state DESC, created_at DESC". joins(:photos). Commented Apr 16, 2018 at 13:10. Follow asked Jul 11, 2020 at 4:09. The create_table function takes a couple of options that control this behavior. I After updating a few apps to Rails 3 I came across some issues with the new scoping syntax. Commented Jun 28, 2013 at 20:13. rb file. "user_id" Expected behavior . It looks like there is a column named name in each of the tables. And am running into the following error: ActiveRecord::StatementInvalid (PG::AmbiguousColumn: ERROR: column reference "name" is ambiguous How do I go about specifying that the 'name' is a reference to the SavedTag model In a Rails app I'm setting up nested routes resource Country do resource State resource City resource User resource Post end I now want to display users that have posted within a country Throw Exception: SQLite3::SQLException: ambiguous column name: id (ActiveRecord::StatementInvalid) System configuration. name. all I get When filling out a form (or populating in rails console) I can save to model attribute :tracking_url and it appears when I query the entire object. @user = User. Abhishek Jain. It's possible rollback a migration with change_columns in rails 4 or rails 5 with: def change end. gmt gmt. Rails version: latest (7. 1, to add a condition with comparison in where clause, we had to add raw SQL notation. Since you are this answer should be accepted as it clearly defines the problem with ambiguous column – user3467734. For some reason the ROR engine is sending string value for that column. July 21, 2016. search(year) method is in, but let me know if this doesn't help and we can try and go further. In this case, <Article id: 1, Warn on instantiating records w/ ambiguous columns #44236. To verify, comment out all column definition and leave autoload=True. Learn more Explore Teams Steps to reproduce I am having three tables locations, accounts, states. item_invoices works fine. 3,976 2 2 gold badges 19 19 silver badges 19 19 bronze badges. I have a table called countries that is associated with two other tables: cities and sites. Improve this question. where. ActiveRecord::InvalidForeignKey: SQLite3::ConstraintException: FOREIGN KEY constraint failed: DROP TABLE "countries" You can use send("#{atr}=") to dynamically set an attribute. locations. Asking for help, clarification, or responding to other answers. It appears that the tests were added to Rails 5. This would give me column names like @document. group_id AS t0_r2, FROM keywords LEFT OUTER JOIN keywords ON keywords. 4. id }) SQLite3::SQLException: ambiguous column name: created_at: Ruby on Rails - column name is the same that relationship name. This blog is part of our Rails 5 series. 2. arel_table[:updated_at]) I have 3 tables A, B , C. The problem i have is when i try to eager load using That's your problem there, you don't point to columns, you point to model/classes, the correct way would be class Tender < ActiveRecord::Base belongs_to :project belongs_to :company end Always try to read those associations as english, it Sir i tried still it gives me ambiguous column name – RajivSrinivasan R. Problem is if I try to join two of these associations in the same query I get an "ambiguous column name", and rightly so since the same column is called in the condition for both associations. Ruby on Rails - column name is the same that relationship name. ORDER BY object_items. The proper syntax for TABLE ALIAS is : SELECT column_name(s) FROM table_name AS alias_name; In a TABLE ALIAS, the TABLE alias is put beside the column being selected in the SELECT portion of the I have a bit of a problem with rails. UserCategorization. NUM_0 = SINVOICED. I am using “includes” to have a full join. Using ? placeholder syntax is for literals, not references to existing columns. id LEFT OUTER JOIN microposts ON microposts. 6,989 7 7 gold badges 40 40 silver There are many questions similar to this that are asking a different question with regard to avoid duplicate columns in a join; that is not what I am asking here. The test to write is (before you've implemented the (bad?) code) one that will compare a given initial condition (setting test data in tables) will return the expected value (a data set with the combined tables). ambiguous column name for a many to many association. Does anyone have the solution to this issue? ruby-on-rails; Share. PG::AmbiguousColumn: ERROR even tough I'm specifying the model name. rb. id" must appear in the GROUP BY clause). 3. users(:id, :name) posts(:id, “ambiguous column name”. rails generate migration AddUserRefToGoals user:references It will generate the migration file. id for instance in sql select go. Tagged with laravel, eloquent, relationships. Follow edited Jul 4, 2015 at 4:42. Sign in Product Actions. * FROM "posts" INNER JOIN "users" ON "users". Hi, I have a people table which has a first_name,last_name as varchar fields and a salutation table which also has first_name, last_name as a boolean field. When I try to change the column code to name in the countries table, I get the following exception:. 11 1 1 silver badge 1 1 bronze badge. There should not be releases that share identical medium/country combinations. It does matter if you want to create a foreign key constraint though, because it does try to use that as the table name then, so if you wanted to I am working on a Ruby on Rails application there, AnalyticsPage has the below relations. How to make ActiveRecord to quote the column name? Something ActiveRecord StatementInvalid is ambiguous is ARs way of saying: Mister, your SQL statement does not make sense because a field you are examining is found on several tables and I don't know which to use. * FROM `users` WHERE `users`. columnattribute . id INNER JOIN jobs ON jobs. . Commented Jan 9, 2018 at 13:52. Reload to refresh your session. When I look at my user records I wish to include some information from forumuser: @users = User. Rails running tests Mysql::Error: Field 'id' doesn't have a default value: INSERT INTO . Before Rails 6. The columns cannot be So there can be no ambiguity if you are accessing the object directly. select("*"). I I don't pretend to be a Rails expert, demanding that this is a problem with Rails and not my code) to be a problem with AR and doing a count on a query that is eager loading two associations which have conditions with the same variable names in them. find :all, :include => :forum_user, If you are using Rails 5, you can use left_outer_joins for the query, and also you can use not to negate the conditions of where, also to prevent ambiguous column you can put in the conditions the table name so you will finish with a query like. You signed out in another tab or window. Rails 6. joins. Is there a way around this issue. Any idea why that happens? It is expected that the id is ignored Rails 4 has been updated, so the change method can be used in the migration to drop a column and the migration will successfully rollback. 0 How to call column name started with the number with Active Record Rails? Hot Network Questions A SF short story which is already partly true, no money transfer except by computers. In the Where clause id is ambigous because it doesn't know what id you are refering (t2 or t3) specify it and it will work properly. the email column was also added as an index for the clients table. what is activerecord. 2 with active_admin and seeing PG::Error: ERROR: column reference "status" is ambiguous when using a custom filter on active_admin in Rents. name LIKE :name OR job_number LIKE :name", {:name => "JOB" } ) or If you join 2 or more tables and they have similar names for their columns SQL server wants you to qualify columns to which they belong. arel_table[:created_at]. How would I write this as a rails validation? I don't quite understand the need to hide the existence of id column in Rails. Bugs can also be related to a project, which may also have a responsible user set, thus they also possess a responsible_id foreign key. type IN ('Driver') AND (runsheet_type IN ('liquid','frontlift','rearlift')) AND ActiveRecord::StatementInvalid: SQLite3::SQLException: ambiguous column name: users. Ask Question Asked 8 years, 1 month ago. 1. Now i'm not an expert in rails, but how can I identify where this duplicate column is from, when I do . first will have at least two id columns (and possibly more). Prefixing ruby on rails table columns with table name to prevent ambiguous fields. Toggle navigation . This looks like it should be either. 2. Thanks for your help. unknown column in field list, column is really there. name or schools. The problem i have is when i try to eager load using. After reviewing your code you might be better off using update_attribute as it performs the set and save operations in one call. id }, list_users: { list_id: list. Looking at the source, it indeed doesn't do anything with an optional references argument. Problem is, I’ve set an AR has_many relationship in the model that joins one table to another Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company My conjecture would be the case-sensitivity of column names when overriding columns which are reflected by using autoload=True. time as order_time, c. I just replaced with table alias in the order clause and it works fine. created_at DESC, created_at DESC LIMIT 20 OFFSET 0 As the previous answer says, it's got a hanging "created_at" that could refer to the column in either table. I have a table Users, and a table ForumUsers, for which I have a “has_one” relationship - a user has_one forumuser. person_object as $$ declare obj influence. Join tables for has_and_belongs_to_many should set it Fix generated projection fields in group by query Closes rails#21922 Let `Book(id, author_id)`, `Photo(id, book_id, author_id)` and `Author(id)` Running `Book. book = Book. gsvnog tautj bwbn trk fhmuclr rorpl bwe haix rpfnxy yuiagyv