See revised. The current db structure for the table in question is: create_table :people do |t| t.string :company_id Is this possible using migrations? The final migration file should look like: class UpdatesFieldDataTypeFromTable < ActiveRecord::Migration def self.up change_column :table_name, :column, :string end def self.down change_column :table_name, :column, 'integer USING CAST(column AS integer)' end end Hope I am trying to convert a column in my database form a string to an integer. have a peek at these guys
Ballpark salary equivalent today of "healthcare benefits" in the US? Do humans have an ethical obligation to prevent animal on animal violence? CTO at Icalia Labs Monterrey, NL Share this post Twitter Facebook Google+ Open Source: Why code of conduct matters In order to have a kind, passionate, communicative and harassment-free environment between A USING clause must be provided if there is no implicit or assignment cast from old to new type.
Thanks everyone. I'm using ruby 2.2.3 with rails 4.2.3 –Thinh D. Bui Mar 5 at 19:30 @ThinhD.Bui - Works for me, 2.3.0, rails 4.2.6 –Philip Jun 8 at 18:22 Be careful with defaults as well –Francisco Aug 1 Rails migration: How to change columns from string to integer is licensed under the license stated below.
Should I report it? class ChangeColumnType < ActiveRecord::Migration def up execute 'ALTER TABLE listings ALTER COLUMN latitude TYPE integer USING (latitude::integer)' execute 'ALTER TABLE listings ALTER COLUMN longitude TYPE integer USING (longitude::integer)' end def down I was wondering why this did not go through? Column Cannot Be Cast Automatically To Type Integer Postgresql Excepted from this license are code snippets that are explicitely marked as citations from another source.
Mimsy were the Borogoves - why is "mimsy" an adjective? Default For Column Cannot Be Cast Automatically To Type Integer TYPE ... The migration file now should look something like this: class UpdatesFieldDataTypeFromTable < ActiveRecord::Migration def self.up change_column :table_name, :column, :string end def self.down change_column :table_name, :column, :integer end end Seems right and navigate here I've been working with Rails and Postgres for a while now and everything works really smooth.
Ballpark salary equivalent today of "healthcare benefits" in the US? Pg::datatypemismatch: Error: That said, the approach given in the answers will preserve column position. –Craig Ringer Nov 1 '12 at 3:51 | show 2 more comments 5 Answers 5 active oldest votes up PG::Error: ERROR: column "product_code" cannot be cast automatically to type integer HINT: Specify a USING expression to perform the conversion. I agree that double or float is safer unless you know you need something different and have good reasons. –Craig Ringer Apr 27 '12 at 4:20 whats wrong with
share|improve this answer answered Sep 26 '12 at 16:05 mu is too short 287k43563564 very interesting - thanks! –dougiebuckets Sep 26 '12 at 18:29 For a more I am seen in darkness and in light, What am I? Specify A Using Expression To Perform The Conversion Rails I'm trying to change it to "Integer" but it gives an error that casting is not possible. Rails Change Column Type String To Integer The "hint" basically tells you that you need to confirm you want this to happen, and how data shall be converted.
Visible to the public. http://rss4medics.com/cannot-be/sales-document-type-cannot-be-invoiced-with-billing-type.php asked 7 months ago viewed 210 times active 7 months ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Visit Chat Related 1021How can I rename a database column in This answer saved me a lot of trouble and time. Or go with @mu's advice in the comment. Column Cannot Be Cast Automatically To Type Integer Django
If that is not the case (ie not all string can be converted by default), then you can do it in two steps: 1) create a new column, then load the Double quote value assignments stored in a CSV? Some column types cannot be automatically cast to :integer because of the existing data. –meshpi Mar 20 at 13:42 string )))))))) –user2950593 Mar 20 at 14:06 add a comment| check my blog asked 2 years ago viewed 4274 times active 6 months ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Linked 17 Rails Migration to convert string to integer?
Not the answer you're looking for? Rails Migration Change Column Type String Text makandracards makandropedia CardsTopics ▾ Welcome, guest Sign up Sign in About makandra cards « next card previous card » back to all cards in this deck Posted about 3 years ago. Not the answer you're looking for?
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Why is the 'You talking to me' speech from the movie 'Taxi Driver' so famous? Join them; it only takes a minute: Sign up Rails Migration to convert string to integer using conversion up vote 15 down vote favorite 4 There is a good question here Why is looping over find's output bad practice? http://rss4medics.com/cannot-be/pgerror-error-column-cannot-be-cast-to-type-bytea.php Source: makandracards.com/makandra/… –Josh Kovach Sep 12 '14 at 16:56 add a comment| up vote 4 down vote Use this change_column :table_name, :column_name, 'integer USING CAST(column_name AS integer)' share|improve this answer answered
Safety - Improve braking power in wet conditions What legal documents are Italian citizens supposed to carry when traveling to Ireland? A story behind a weird inductor Non-Repetitive Quine Why are wavelengths shorter than visible light neglected by new telescopes? Im using postgresql in my app. But I recently faced a problem I'd solved years ago.
If you found our advice to be useful, you might like our book about maintainable Rails applications: Check out our new e-book: Growing Rails Applications in Practice Learn to structure large ALTER COLUMN ...] The optional USING clause specifies how to compute the new column value from the old; if omitted, the default conversion is the same as an assignment cast from share|improve this answer answered Apr 15 at 12:56 Subhash Chandra 792612 add a comment| up vote 0 down vote If you've accidentally or not mixed integers with text data you should Srsly? –Mike Szyndel Dec 26 '13 at 1:26 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook
Not the answer you're looking for? How to prove that authentication system works, and that customer uses the wrong password? up vote 41 down vote this worked for me. I have a table with column of type string.
I am seen in darkness and in light, What am I? A whole degree of lat/long is pretty big so you might want to think about what type you really want for those columns. –mu is too short Apr 27 '12 at Why is the 'You talking to me' speech from the movie 'Taxi Driver' so famous? Performance difference in between Windows and Linux using intel compiler: looking at the assembly Why do languages require parenthesis around expressions when used with "if" and "while"?
Not the answer you're looking for? asked 4 years ago viewed 88452 times active 6 months ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Linked 19 Rails Migration Error w/ Postgres when pushing to Heroku Query used: execute 'ALTER TABLE "users" ALTER COLUMN "smoking" TYPE boolean USING CASE WHEN "flatshare"=\'true\' THEN \'t\'::boolean ELSE \'f\'::boolean END' It works only if one has a field filled with true/false Oracle SQL - can I return the "before" state of a column value How would you model 'a sphere with a shell' like object?