Searching for Rails Remove Database Support information? Find all needed info by using official links provided below.
https://guides.rubyonrails.org/6_0_release_notes.html
Ruby on Rails 6.0 Release NotesHighlights in Rails 6.0: Action Mailbox Action Text Parallel Testing Action Cable Testing These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the change logs or check out the list …
https://guides.rubyonrails.org/v4.1.1/migrations.html
Active Record Migrations. Migrations are a feature of Active Record that allows you to evolve your database schema over time. Rather than write schema modifications in pure SQL, migrations allow you to use an easy Ruby DSL to describe changes to your tables.
https://edgeguides.rubyonrails.org/6_0_release_notes.html
Ruby on Rails 6.0 Release NotesHighlights in Rails 6.0: Action Mailbox Action Text Parallel Testing Action Cable Testing These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the change logs or check out the list …
https://guides.rubyonrails.org/v3.2.9/migrations.html
Rails 3.1 makes migrations smarter by providing a new change method. This method is preferred for writing constructive migrations (adding columns or tables). The migration knows how to migrate your database and reverse it when the migration is rolled back without the need to …
https://stackoverflow.com/questions/17649686/destroy-remove-database-in-rails
Destroy/Remove database in Rails. Ask Question Asked 6 years, 4 months ago. Active 4 years, 7 months ago. Viewed 44k times 19. 7. Is it possible to completely remove the database and all migration records etc from an existing application so I can redesign the database from scratch? database ruby ...
https://guides.rubyonrails.org/v5.1/active_record_migrations.html
Instead of using Active Record's schema dumper, the database's structure will be dumped using a tool specific to the database (via the db:structure:dump rails task) into db/structure.sql. For example, for PostgreSQL, the pg_dump utility is used. For MySQL and MariaDB, this file will contain the output of SHOW CREATE TABLE for the various tables.
https://guides.rubyonrails.org/v3.0.1/migrations.html
On databases that support transactions with statements that change the schema (such as PostgreSQL or SQLite3), migrations are wrapped in a transaction. If the database does not support this (for example MySQL) then when a migration fails the parts of it that succeeded will not be rolled back.
https://edgeguides.rubyonrails.org/4_1_release_notes.html
Ruby on Rails 4.1 Release NotesHighlights in Rails 4.1: Spring application preloader config/secrets.yml Action Pack variants Action Mailer previews These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the change logs or check out the list of commits in the main Rails repository on GitHub.
https://edgeguides.rubyonrails.org/
This guide covers the database query interface provided by Active Record. Active Model Basics ... This guide explains how to use the instrumentation API inside of Active Support to measure events inside of Rails and other Ruby code. ... Check the Ruby on Rails Guides Guidelines for style and conventions.
https://github.com/rails/rails/pull/13247
This commit patches older versions of ActiveRecord (< 4.1) to support MySQL 5.7+. A breaking change to primary keys was introduced in 5.7, and patched versions of ActiveRecord were only released starting with 4.1. rails/rails#13247
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