Posted via web from The Web and all that Jazz Posted by Wil C at 11:06 PM 3 comments: Shrikant11:19 PMThere is one simple solution to alter table1. chnged to change_column :table_name, :column_name, 'integer USING CAST(column_name AS integer)' share|improve this answer answered Jul 30 '14 at 8:35 bibangamba 51857 did you try this exercise with data and For example if you have the letter 'a' or a space ' ', how would you cast it to a number? Newer Post » « Older Post Home Subscribe to: Post Comments (Atom) About Me Wil C A startupper talking about programming languages, technology, and the web. http://amigasuperbit.com/cannot-be/pgerror-error-column-cannot-be-cast-to-type-bytea.html
I'm not interested in: - pure SQL - dropping the column - creating another column, converting data, dropping original and then renaming ruby-on-rails ruby-on-rails-3 share|improve this question asked Jun 12 '13 There are two issues you run into. Subscribe to this entry Quicksearch Calendar November '16 Mon Tue Wed Thu Fri Sat Sun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 All rights reserved | Blogger templates created by Templates Block | Wordpress theme by Modern Furniture makandracards makandropedia CardsTopics ▾ Welcome, guest Sign up Sign in About makandra cards « next
Is Area of a circle always irrational Why is looping over find's output bad practice? License for source code License for source code All source code included in the card PostgreSQL vs. Are there still systems around with a /bin/sh binary? Sometimes you'd just want to nullify it and sometimes you really want it to fail because such a thing should never happen and signals questionable data. #5.1 Leo on 2010-04-30 17:15
River Crossing Puzzle Do the Leaves of Lórien brooches have any special significance or attributes? Previous:From: David FetterDate: 2005-08-29 23:24:45 Subject: Re: ALTER TABLE ( smallinto -> boolean ) ... Is adding the ‘tbl’ prefix to table names really a problem? Column Cannot Be Cast Automatically To Type Integer Postgresql ALTER COLUMN ...
What do I do? Column Cannot Be Cast Automatically To Type Integer Django static_cast vs. The standard way of writing the migration didn't work: change_column :projects, :status, :boolean, :default=>true So I started googling and ended up with: execute "alter table projects ALTER COLUMN status TYPE boolean Browse other questions tagged postgresql casting or ask your own question.
When does TNG take place in relation to DS9? Default For Column Cannot Be Cast Automatically To Type Integer I am seen in darkness and in light, What am I? You'd need something a bit more sophisticated if you want to retain NaN and Inf and 10E42 scientific notation, though. –Craig Ringer Jul 25 '13 at 23:48 add a comment| up the column order in the select will be respected.
As a monk, can I use Deflect Missiles to intentionally catch a projectile? check over here Your comment will only be submitted if the strings match. The to_number function breaks in that case. Let us suppose you have a text or varchar field that you realize later on should have been an integer and its padded on top of that because it comes from Postgres Alter Column Integer To Varchar
What's the pun about? 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. But I cannot seem to get this working. his comment is here add_column :users, :smoking_tmp, :boolean User.reset_column_information # make the new column available to model methods User.all.each do |user| user.smoking_tmp = user.smoking == 1 ?
The web was not exactly much help here, but I managed to find this in the postgresql docs: the USING expression is not applied to the column's default value (if any); Specify A Using Expression To Perform The Conversion Rails How to stop NPCs from picking up dropped items Performance difference in between Windows and Linux using intel compiler: looking at the assembly Unexpected Delay Between For Loops Straight line equation Not sure whether this solution works for other databases.
good info otherwise. #8 jason on 2010-10-11 14:20 I ran into a very similar problem today, and this gave me the tip I needed to fix it. You want to change it to an integer. 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 Specify A Using Expression To Perform The Conversion Django You almost always want to be using explicitly named columns and SELECT lists, not relying on column ordinal positions.
That would be a judgement call and would vary depending on what you are doing. I tried your ALTER line and it gives me an error "Syntax error near Using" –itsols Nov 1 '12 at 4:08 My statement: ALTER TABLE "tblMenus" ALTER COLUMN "MID" if the existing data is not that important for you, you can delete the column and create a new one first step remove currency from you model and apply migration add weblink 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
You can reach me at [email protected] Follow me on Twitter stackoverflow resume View my complete profile Karma -From a new search engine Github repos Twitter Blog Archive ▼ 2010 (48) ► How do I make an alien technology feel alien? When writing Rails migrations to convert a string column to an integer you'd usually say: change_column :table_name, :column_name, :integer However, PostgreSQL will complain: PG::DatatypeMismatch: ERROR: column "column_name" cannot be cast automatically Can I use that to take out what he owes me?
The field contains only integer values. Not knowing how to convert the default, I simply changed it to something that could be converted: [code lang=sql] ALTER TABLE the_table ALTER COLUMN col_name SET DEFAULT 0; [/code] Despite it PostgreSQL vs. What number would it be?
If you do something like ALTER TABLE ma_tiger ALTER COLUMN fraddl TYPE integer You get this rather unhelpful message: column "fraddl" cannot be cast to it may be backup your data) then first to clear the data from the DB field or set the value as 0. pgsql-sql by date Next:From: Tom LaneDate: 2005-08-29 23:49:39 Subject: Re: ALTER TABLE ( smallinto -> boolean ) ... Check out our new e-book: Growing Rails Applications in Practice Learn to structure large Ruby on Rails codebases with the tools you already know and love.
If you have non-numeric data, results may be unexpected (but you're converting to an integer, after all). dynamic_cast1858Cast int to enum in C#928PostgreSQL “DESCRIBE TABLE”1412Do I cast the result of malloc?645Show tables in PostgreSQL1How to cast from text to int if column contain both int and NULL values Fournier wrote: > I have a table with several 'smallint' fields that I'd like to convert to > booleean ... If you are doing SELECT * which will respect the order of the columns in the table, you should get out of the habit of doing that anyway. #4.1 Leo Hsu
When you do a SELECt SELECT column1, column2, .... Browse other questions tagged django postgresql django-models or ask your own question. change varchar column to int change_column :table_name, :column_name, :integer got: PG::DatatypeMismatch: ERROR: column "column_name" cannot be cast automatically to type integer HINT: Specify a USING expression to perform the conversion. Can a text in Latin be understood by an educated Italian who never had any formal teaching of that language?
Join them; it only takes a minute: Sign up Django, Postgres - column cannot be cast automatically to type integer up vote 1 down vote favorite In my database i have Also it's wery bad in terms of speed - on a large production database it would take ages to run. –Mike Szyndel Jun 14 '13 at 11:43 1 @MichałSzyndel You So, try first change the default value e.g. class ConvertStatusToBoolean < ActiveRecord::Migration def self.up add_column :projects, :convert_status, :boolean, :default => true # look up the schema's to be able to re-inspect the Project model # http://apidock.com/rails/ActiveRecord/Base/reset_column_information/class Project.reset_column_information # loop