Rake db:migrate ';;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;::::::::::::::::::::::::::::::::::::::::::::; https://melvinchng.github.io/rails/CreateARailsApplication.html#27-more-rake-db-command

 

2.7 More rake db Command

This table is compiled by Jaco Pretorites. He combined the information shown in Table 2.7.1 from StackOverflow and Rails source code. In his website, he explains all different Rails db Rake Tasks and what each task they do. Personally, I have not tried all the commands and do not guarantee it will work. In order for the commands below to work, you have to add rake to each of the command. For example, for the first command in the table, we have to use rake db:create.

Table 2.7.1: All Rails db Rake Tasks and What They Do

Command	Description
db:create	Creates the database for the current RAILS_ENV environment. If RAILS_ENV is not specified it defaults to the development and test databases.
db:create:all	Creates the database for all environments.
db:drop	Drops the database for the current RAILS_ENV environment. If RAILS_ENV is not specified it defaults to the development and test databases.
db:drop:all	Drops the database for all environments.
db:migrate	Runs migrations for the current environment that have not run yet. By default it will run migrations only in the development environment.
db:migrate:redo	Runs db:migrate:down and db:migrate:up or db:migrate:rollback and db:migrate:migrate depending on the specified migration. I usually run this after creating and running a new migration to ensure the migration is reversible.
db:migrate:up	Runs the up for the given migration VERSION.
db:migrate:down	Runs the down for the given migration VERSION.
db:migrate:status	Displays the current migration status.
db:migrate:rollback	Rolls back the last migration.
db:version	Prints the current schema version.
db:forward	Pushes the schema to the next version.
db:seed	Runs the db/seeds.rb file.
db:schema:load	Loads the schema into the current environment’s database.
db:schema:dump	Dumps the current environment’s schema to db/schema.rb.
db:setup	Runs db:schema:load and db:seed.
db:reset	db:drop and db:setup.
db:migrate:reset	Runs db:drop, db:create and db:migrate.
db:test:prepare	Check for pending migrations and load the test schema. (If you run rake without any arguments it will do this by default.)
db:test:clone	Recreate the test database from the current environment’s database schema.
db:test:clone_structure	Similar to db:test:clone, but it will ensure that your test database has the same structure, including charsets and collations, as your current environment’s database.