Load a structure.sql into a rails database via rake

Question

rake db:schema:load will load a schema.rb file into a rails database. Is there a way to load a structure.sql file into the database through rake or do I just need to do this manually?

Answer 1

Use rake db:structure:load , which will load db/structure.sql .

[Update]

If you want to load another file, you can specify its path via

• SCHEMA environment variable (Rails 5.0 or later)
• DB_STRUCTURE environment variable (Rails 4.x)

For example, run

rake db:structure:load SCHEMA=db/another.sql

or

rake db:structure:load DB_STRUCTURE=db/another.sql

Answer 2

Just use

rake db:setup

which will use either schema.rb or structure.sql depending on your configuration.

Answer 3

Use the database's own SQL load mechanism.

For Postgres this should work (at least if the database exists and you don't need a password):

psql -d databaseName < db/structure.sql

On Heroku where rake db:setup doesn't work as you can't create a database like that you can do this:

heroku pg:psql < db/structure.sql

Answer 4

Once you load your schema, you can try:

rails dbconsole < structure.sql

OR

rails db < structure.sql

Answer 5

Sometimes you want to load a file that is not the default db/structure.sql .

For rails 4.2 and earlier, use

DB_STRUCTURE=some_file.sql rake db:structure:load

As of rails 5 use

SCHEMA=some_file.sql rake db:structure:load

Answer 6

Make your seeds.rb file like:

unless Rails.env.production?
  connection = ActiveRecord::Base.connection

  sql = File.read('db/structure.sql')
  statements = sql.split(/;$/)
  statements.pop  # the last empty statement

  ActiveRecord::Base.transaction do
    statements.each do |statement|
      connection.execute(statement)
    end
  end
end

Source .