sequel

I am creating a Sequel migration to create a new table in my PostgreSQL database. I want to define a String array column, which PostgreSQL supports. My migration looks like this: create_table :venues do primary_key :id String :reference , :null => false String :name , :null => false String :description , :null => false String[] :type , :null => false DateTime :created_at , :null => false DateTime :updated_at , :null => false end How can I define something like text[] in my migration? You just use the column method and specify the type as a string: column :type, "text[]" 来源： https:/

Simply put, how can I do this query using Sequel ? select a.id, count(t.id) from albums a right join tracks t on t.album_id = a.id group by a.id DB[:albums___a]. right_join(:tracks___t, :album_id=>:id). select_group(:a__id). select_more{count(:t__id)} Your problem is that the left join finds a track ID for each album ID. Solutions: right join subquery of sums, assuming sequel supports that: left join (select album_id, count(album_id) as count from tracks group by album_id) t on a strait up from albums a, tracks t where t.album_id=a.id instead of the join. 来源： https://stackoverflow.com

I'd like to not store times in my local timezone, but Sequel is making it really tough on me. I can set them to UTC before I put them in there (a bit of a pain), but then when I take them back out it assumes that they are local dates and then they are all 8 hours in the future. Is this something that hasn't been implemented yet? And if so, are there any workarounds? Thanks! The easiest way to try to put them in as UTC is to override literal_datetime and/or literal_time for the dataset class you are using to return a literal string of the UTC time. Getting them out in UTC depends on the adapter

I'm building a wishlist system using Sequel. I have a wishlists and items table and an items_wishlists join table (that name is what sequel chose). The items_wishlists table also has an extra column for a facebook id (so I can store opengraph actions), which is a NOT NULL column. I also have Wishlist and Item models with the sequel many_to_many association set up. The Wishlist class also has the :select option of the many_to_many association set to select: [:items.*, :items_wishlists__facebook_action_id] . Is there a way that I can add in extra data when creating the association, like wishlist