ActiveRecord MULTI_STATEMENTS with mysql2

multi_statements_mysql2.rb

# place in config/initalizers

module ActiveRecord
  class Base
    # Establishes a connection to the database that's used by all Active Record objects.
    def self.mysql2_connection(config)
      config[:username] = 'root' if config[:username].nil?

      if Mysql2::Client.const_defined? :FOUND_ROWS
        config[:flags] = Mysql2::Client::FOUND_ROWS | Mysql2::Client::MULTI_STATEMENTS
      end
      
      client = Mysql2::Client.new(config.symbolize_keys)
      options = [config[:host], config[:username], config[:password], config[:database], config[:port], config[:socket], 0]
      ConnectionAdapters::Mysql2Adapter.new(client, logger, options, config)
    end
  end
end