Pgerror Error Column Cannot Be Cast To Type Bytea
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Cannot Be Cast Automatically To Type Integer Rails
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How To Change Column Data Type In Postgresql
of varchar field to integer: “cannot be cast automatically to type integer” up vote 81 down vote favorite 28 I have a small table and a certain field contains the type "character varying". I'm trying to change it to "Integer" but it default for column cannot be cast automatically to type integer gives an error that casting is not possible. Is there a way around this or should I just create another table and bring the records into it using a query. The field contains only integer values. postgresql casting postgresql-9.1 fieldtype share|improve this question edited Mar 7 '14 at 19:00 Tshepang 4,7061059103 asked Nov 1 '12 at 3:33 itsols 2,31242461 What specific ALTER TABLE did you try and what was the specific error message? –mu is too short Nov 1 '12 at 3:38 specify a using expression to perform the conversion rails @muistooshort I tried using alter from phppgadmin. Selected the column and tried to input the new field type. The error is: SQL error: ERROR: column "MID" cannot be cast to type integer –itsols Nov 1 '12 at 3:42 3 First is to backup table. Then you may create an another column (say field2) of integer type in the same table. Select the cast to integer value of the field1 into field2 . Then rename the column. –Igor Nov 1 '12 at 3:42 @Igor but the new column falls at the end of the table right? Can't I have it in the same position? –itsols Nov 1 '12 at 3:43 1 @itsols Caring about column positions is usually a sign of iffy application design. You almost always want to be using explicitly named columns and SELECT lists, not relying on column ordinal positions. 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 vote 121 down vote accepted There is no implicit (automatic) cast from text or varchar to integer (i.e. you cannot pass a varchar to a function expecting integer or assign a varchar field to an integer one), so you must specify an explicit cast using ALTER TABLE ... ALTER COLUMN ... TYPE ... USING: ALTER TABLE the_table ALTER COLUMN col_name TYPE integer USING (col_name::integer); Note that you may have whitespace in your text fields; in tha
varchar to integer I ran into a problem. [code lang=text] SQLSTATE[42804]: Datatype mismatch: 7 ERROR: default for column "column_name" cannot be cast to type integer [/code] The solution I could
Cannot Be Cast Automatically To Type Json
find on (Stackoverflow)[http://stackoverflow.com/questions/13170570/change-type-of-varchar-field-to-integer-cannot-be-cast-automatically-to-type-i] was not working: [code lang=sql] ALTER TABLE the_table ALTER COLUMN specify a using expression to perform the conversion django col_name TYPE integer USING (col_name::integer); [/code] Looking closer at the error I realised - as is often the case
Postgres Using Cast
- the error was indicating exactly what the problem was. The default of the column could not be converted. Not knowing how to convert the default, I simply changed it to something http://stackoverflow.com/questions/13170570/change-type-of-varchar-field-to-integer-cannot-be-cast-automatically-to-type-i that could be converted: [code lang=sql] ALTER TABLE the_table ALTER COLUMN col_name SET DEFAULT 0; [/code] Despite it being a varchar column, the integer value 0 was accepted. After which the earlier CAST worked. casterrorpostgresqlsql Post navigation Previous PostInstall Debian wheezy-backports repositoryNext PostHow to install and package Frei0r plugins using FPM Leave a Reply Cancel reply Your email address will not be published. Required fields http://antler.co.za/2014/10/postgresql-datatype-mismatch-default-for-column-cannot-be-cast-to-type-integer/ are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email. Everything is as it should be Search for: Recent Posts Installing Vagrant VirtualBox Guest Additions plugin on Linux Mint Debian Edition How to install and package Frei0r plugins using FPM Postgresql Datatype mismatch default for column cannot be cast to type integer Install Debian wheezy-backports repository Elasticsearch Talk at Annual PHP Cape Town Conference Recent Commentssumant on Install Node.js & NPM on Debian Stable (Wheezy / 7)CokoTracy Mirindi on Install Node.js & NPM on Debian Stable (Wheezy / 7)Tin Tran on SQL - Find the last DISTINCT itemszverty on Install Node.js & NPM on Debian Stable (Wheezy / 7)hasylle on Install Node.js & NPM on Debian Stable (Wheezy / 7)Archives May 2015 January 2015 October 2014 September 2014 July 2014 June 2014 April 2014 November 2013 October 2013 November 2009 July 2009 May 2009 April 2009 October 2008 May 2007 Categories ActionScript Android Bash Database Elasticsearch Events Linux Missing Handbook Node.js Packages PHP Postgresql Programming SQL Vagrant Web Development Meta Log in Entries RSS Comments RSS WordPress.org Proudly powered by WordPress
List Log In Migrate column from text to binary (PostgreSQL) Alex Shulgin https://www.ruby-forum.com/topic/2562548 (Guest) on 2011-09-12 23:12 Hello, So I've realized one of the columns in a table has to be binary instead of text. However, a http://osdir.com/ml/RubyonRailsTalk/2011-09/msg00552.html 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 cannot be bytea : ALTER TABLE "my_table" ALTER COLUMN "my_column" TYPE bytea Now I've being told this problem can be solved with USING clause of the ALTER TABLE/COLUMN statement, like this: ALTER TABLE "my_table" ALTER COLUMN "my_column" TYPE bytea USING "my_column"::bytea; Given that this is a PostgreSQL extension, I guess cannot be cast this has to go to the connection adapter and not my code (if I put it there, it won't work with other DB drivers obviously.) Any pointers? -- Alex Report post Edit Move Delete topic Reply with quote Forum List Topic List New Topic Search Register User List Log In Enable email notification | Enable multi-page view Please log in before posting. Registration is free and takes only a minute. Existing account User name or e-mail address Password Always use SSL (experimental!) NEW: Do you have a Google/GoogleMail, Yahoo or Facebook account? No registration required! Log in with Google account | Log in with Yahoo account | Log in with Facebook account No account? Register here. Forum List Topic List New Topic Search Register User List Log In Powered by RForum and Captchator. Contact information - E-Mail: webmaster (at) ruby-forum (dot) com.
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 I've being told this problem can be solved with USING clause of the ALTER TABLE/COLUMN statement, like this: ALTER TABLE "my_table" ALTER COLUMN "my_column" TYPE bytea USING "my_column"::bytea; Given that this is a PostgreSQL extension, I guess this has to go to the connection adapter and not my code (if I put it there, it won't work with other DB drivers obviously.) Any pointers? -- Alex -- 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@xxxxxxxxxxxxxxxxx To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@xxxxxxxxxxxxxxxxx For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en. Thread at a glance: Previous Message by Date: [Rails] Re: couldn't find file 'jquery' rails 3.1 stable mountable engine I had the same problem and finally fixed. The solution is to explicitly require the 'jquery-rails' gem in the dummy config/application.rb file, so Sprockets can add the jquery assets in the assets.path. In test/dummy/config/application.rb require File.expand_path('../boot', __FILE__) # Pick the frameworks you want: # require "active_record/railtie" require "action_controller/railtie" require "action_mailer/railtie" require "active_resource/railtie" require "rails/test_unit/railtie" require "sprockets/railtie" # Auto-require default libraries and those for the current Rails environment. Bundler.require :default, Rails.env require "coffee" require "jquery-rails" # this should be auto-included with the Bundler.require :default, Rails.env, but it's not happening module Dummy class Application < Rails::Application # ... end end Same with other gems that have assets that should be auto-loaded by Sprockets. Hope this helps. - Mario Izquierdo On Sep 1, 9:02 pm, Jorgen Nilsson