ActiveRecord ConnectionAdapters AbstractMysqlAdapter ER_DUP_ENTRY constant ER_DUP_ENTRY Ruby on Rails 5.1.7 Since v5.1.7 Available in: v5.1.7 v5.2.8.1 v6.0.6.1 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3.2 v8.0.5.1 v8.1.3.1 edge Compare with: (choosing a version navigates to the comparison) Choose a version v5.2.8.1 · same v6.0.6.1 · changed v6.1.7.10 · changed v7.0.10 · changed v7.1.6 · changed v7.2.3.2 · changed v8.0.5.1 · changed v8.1.3.1 · changed edge · changed See dev.mysql.com/doc/refman/5.7/en/error-messages-server.html On this page Support Bug Reports can be filed for the Ruby on Rails project on GitHub. Feature requests should be discussed on the rubyonrails-core forum. License Released under the MIT license.
