dbmigrate

问题 I'm using rails with the oracleenhanced adaptor to create a new interface for a legacy application. Database migrations work successfully, but take an incredibly long amount of time before rake finishes. The database changes happen pretty quickly (1 or 2 seconds), but the db/schema.db dump takes over an hour to complete. (See example migration below.) It's a relatively large schema (about 150 tables), but I'm sure it shouldn't be taking this long to dump out each table description. Is there

问题 I have a sql dump file generated by mysqldump of mariadb 10.2. I want to set up a new db server using mariadb 10.4 with data coming from the sql dump file. Is the upgrade process necessary in this case? If so, should I first restore the sql file into db and then run mysql_upgrade or somehow directly upgrade the sql file and then restore into the db? 回答1: Well I would suggest that you follow the upgrade guides given on the MariaDb website. See Upgrading MariaDB. It lists articles on upgrading

问题 In trying to do the command $rails db:migrate , I receive the following error: $ rails db:migrate RAILS_ENV=test rails aborted! StandardError: An error has occurred, this and all later migrations canceled: Directly inheriting from ActiveRecord::Migration is not supported. Please specify the Rails release the migration was written for: How do I specify the release the migration was written for? What file is this in? Thanks! 回答1: Rails prevent from inheriting from ActiveRecord::Migration that's

问题 I've got a database change management workflow in place. It's based on SQL scripts (so, it's not a managed code-based solution). The basic setup looks like this: Initial/ Generate Initial Schema.sql Generate Initial Required Data.sql Generate Initial Test Data.sql Migration 0001_MigrationScriptForChangeOne.sql 0002_MigrationScriptForChangeTwo.sql ... The process to spin up a database is to then run all the Initlal scripts, and then run the sequential Migration scripts. A tool takes case of

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Rails 2.3-style plugins and deprecation warnings running task in Heroku I am running rake db:migrate gives me the following warnings and then aborts: $ heroku rake db:migration --trace DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support forthese plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and

问题 If using the this option in config/application.rb : config.active_record.schema_format = :sql then when you do: rake db:migrate it only dumps the db/structure.sql . I know it isn't using the db/schema.rb since it is using the :sql option, but how can you make rake db:migrate generate db/schema.rb also? We need that because RubyMine 4.5 and IntelliJ IDea 11 use db/schema.rb for autocompletion of columns. 回答1: To generate/update db/schema.rb even if using the :sql option, you can put this in

问题 My version of rails is 4.0.0, my version of mysql is Ver 14.14 Distrib 5.7.9, for Win64 (x86_64). I am operating of an older version of rails as I was getting some clashes with the mysql as per my previous question Here. (check Kalelc's approved answer for my recourse) upon running rake db:migrate I get the following error == CreateUsers: migrating ==================================================== -- create_table(:users) rake aborted! StandardError: An error has occurred, all later

问题 Original problem: I'm (a newbie to ruby) using RVM to manage my ruby on Mac OSX 10.6 Here's my mac OX info: $ rvm info ruby-1.9.2-head@1.9.2-head-gemset: system: uname: "Darwin fillibuster-2.local 10.6.0 Darwin Kernel Version 10.6.0: Wed Nov 10 18:13:17 PST 2010; root:xnu-1504.9.26~3/RELEASE_I386 i386" bash: "/bin/bash => GNU bash, version 3.2.48(1)-release (i386-apple-darwin10.0)" zsh: "/bin/zsh => zsh 4.3.9 (i386-apple-darwin10.0)" rvm: version: "rvm 1.5.2 by Wayne E. Seguin (wayneeseguin

问题 I done lot of googling and read lot of stack overflow pages , but can't fix this issues. If any one can help with this , it will be helpful. My app works fine still yesterday , now suddenly it starts to give error on "rake db:migrate" I check my scheme its fine , i tried after rake db:drop / db:create / db:migrate , i checked for devise in Gem file. My Error : My Schema : My Gem File : Any help will be very use ful. Thanks. Error as Text : Senthil:zenkars senthilkumar$ rake db:migrate rake

问题 after pushing my latest code Heroku doesn't alter the tables. when i run "heroku rake db:migrate" i get rake aborted! its says syntax error but i cant figure where is the error syntax error on line 4, col 586: ` state: ["σלקµ╡╖Θבף","Θ¥עµú«τ£ל","σ▓⌐µיכτ£ל","σ««σƒמτ£ל","τºכτפ░τ£ל","σ▒▒σ╜óτ£ל","τªןσ│╢τ£ל","Φל¿σƒמτ£ל","µáדµ£¿τ£ל","τ╛ñΘª¼τ£ל","σƒ╝τמיτ£ל","σםדΦסיτ£ל","µ¥▒Σ║¼Θד╜","τÑ₧σÑטσ╖¥τ£ל","µצ░µ╜ƒτ£ל","σ»לσ▒▒τ£ל","τƒ│σ╖¥τ£ל","τªןΣ║ץτ£ל","σ▒▒µó¿τ£ל","Θץ╖Θחמτ£ל","σ▓נΘר£τ£ל","Θ¥שσ▓íτ£ל","µה¢τƒÑτ£ל