Ruby gem bulk updating
Not only has it kept up with Rails development, but it works with several databases. mysql2_makara, mysql2spatial, postgis, postgresql_makara, seamless_database_pool, spatialite – then those all work too.If you don't see an adapter you're using listed let us know.Since we're not validating, we can go directly to generating performance SQL and skip a lot of Active Record hoopla.The above examples are the simplest ways to improve batch loading with activerecord-import.That is a lot of stuff for the database to do and it takes an enormous amount of time to do it all. Instead of using # convert_csv_to_books is a method that converts CSV into an # array of Book models, returning an array of attributes books = convert_csv_to_book_do |attrs| Book.new(attrs) end Book.import books One thing to note: validations like uniqueness that check against the database by issuing SELECT queries will not know about duplicates in your dataset.If you do not have DB-level constraints enforcing uniqueness you may get duplicates if your imported dataset contains duplicate values.
[ ['Book #1', 'Good book'], ['Book #2', 'Great Book'], ...] array_of_book_attrs = convert_csv_to_book_attributes Book.import columns, array_of_book_attrs, validate: false instances.
i have actionmailer (2.1.0)actionpack (2.1.0)activerecord (2.1.0)activeresource (2.1.0)activesupport (2.2.2, 2.1.0)fastthread (1.0.1)passenger (2.0.3)rack (0.4.0)rails (2.1.0)rake (0.8.3, 0.8.1)tzinfo (0.3.9)Hum after a reboot, i have an error with passenger : Error message: uninitialized constant Action View:: Template Finder Exception class: Name Error And i have :actionmailer (2.2.2, 2.1.2, 2.1.0)actionpack (2.2.2, 2.1.2, 2.1.0)activerecord (2.2.2, 2.1.2, 2.1.0)activeresource (2.2.2, 2.1.2, 2.1.0)activesupport (2.2.2, 2.1.2, 2.1.0)fastthread (1.0.1)mysql (2.7)passenger (2.0.6, 2.0.5, 2.0.3)rack (0.4.0)rails (2.2.2, 2.1.2, 2.1.0)rake (0.8.3, 0.8.1)tzinfo (0.3.12, 0.3.9) How to tell to redmine to use the good version ?
, lib/mongo/collection/view.rb, lib/mongo/collection/view/iterable.rb, lib/mongo/collection/view/readable.rb, lib/mongo/collection/view/writable.rb, lib/mongo/collection/view/immutable.rb, lib/mongo/collection/view/map_reduce.rb, lib/mongo/collection/view/aggregation.rb, lib/mongo/collection/view/explainable.rb, lib/mongo/collection/view/builder/flags.rb, lib/mongo/collection/view/builder/op_query.rb, lib/mongo/collection/view/builder/modifiers.rb, lib/mongo/collection/view/builder/map_reduce.rb, lib/mongo/collection/view/builder/aggregation.rb, lib/mongo/collection/view/builder/find_Execute a parallel scan on the collection view.
With a minimal API and almost no effort to use activerecord-import is a developer's best friend.
You should spend time working on building the application and giving users fresh data – not waiting for data to import.