执行数据脚本相关命令

在命令行输入：rake -T db

rake db:abort_if_pending_migrations  # Raises an error if there are pending migrations
rake db:charset                      # Retrieves the charset for the current environment's database
rake db:collation                    # Retrieves the collation for the current environment's database
rake db:create                       # Create the database defined in config/database.yml for the current RAILS_ENV
rake db:create:all                   # Create all the local databases defined in config/database.yml
rake db:drop                         # Drops the database for the current RAILS_ENV
rake db:drop:all                     # Drops all the local databases defined in config/database.yml
rake db:factory_girl:load            # Load factory_girl into the current environment's database.
rake db:fixtures:identify            # Search for a fixture given a LABEL or ID.
rake db:fixtures:load                # Load fixtures into the current environment's database.
rake db:migrate                      # Migrate the database through scripts in db/migrate and update db/schema.rb by inv...
rake db:migrate:down                 # Runs the "down" for a given migration VERSION.
rake db:migrate:redo                 # Rollbacks the database one migration and re migrate up.
rake db:migrate:reset                # Resets your database using your migrations for the current environment
rake db:migrate:up                   # Runs the "up" for a given migration VERSION.
rake db:populate                     # Erase and fill database
rake db:reset                        # Drops and recreates the database from db/schema.rb for the current environment.
rake db:rollback                     # Rolls the schema back to the previous version.
rake db:schema:dump                  # Create a db/schema.rb file that can be portably used against any DB supported by AR
rake db:schema:load                  # Load a schema.rb file into the database
rake db:sessions:clear               # Clear the sessions table
rake db:sessions:create              # Creates a sessions migration for use with ActiveRecord::SessionStore
rake db:structure:dump               # Dump the database structure to a SQL file
rake db:test:clone                   # Recreate the test database from the current environment's database schema
rake db:test:clone_structure         # Recreate the test databases from the development structure
rake db:test:load                    # Recreate the test database from the current schema.rb
rake db:test:prepare                 # Check for pending migrations and load the test schema
rake db:test:purge                   # Empty the test database
rake db:version                      # Retrieves the current schema version number
rake spec:db:fixtures:load           # Load fixtures (from spec/fixtures) into the current environment's database.