try update_all as bulk update like bulk insert
to use bulk insert on Rails, add gem below.
gem 'activerecord-import'
In MySQL, bulk update can be used by this gem, but postgres..... sqlite.....
update_all
solution!
# make all records with open: false to open: true Shop.where(open: false).update_all(open: true) # Update all shops with the given attributes Shop.update_all open: true