Elixir ecto subquery mac os#

Join: i in subquery(from(i in MyApp.Items, where: i.status_id = 2 )), on: p.id = i.id, I tried to achieve this by using the subquery as a join as follows: Repo.all( I would like to have all of the items associated with that customer if one of the records has a status_id of 2. This Ecto query gives me the customers that have an item with a status_id of 2 but it only returns the qualifying item record. Items: r, items: :provider, items: :type, items: :status This function takes in a required argument of an Ecto query and returns all of the records that meet the conditions of the query.

Was hoping Stack Overflow could prove me wrong. iex> import Ecto.Query iex> query from (Movie) Ecto.Query < from m0 in Friends.Movie > In order to execute our query, we use the Repo.all/2 function.

Honestly, Im just experimenting with Elixir/Ecto on a hobby project and after combing the Ecto documentation, left with the impression this isnt currently possible.

Elixir ecto subquery mac os#

Which was a bit of reverse engineering from my current Ecto query: Repo.all( I can make the SQL above work using a fragment, which sort of seems to defeat the point of Ecto here. Elixir version (elixir -v): 1.10.2 Database and version (PostgreSQL 9.4, MongoDB 3.2, etc.): PG 11 Ecto version (mix deps): 3.4.5 Database adapter and version (mix deps): 3.4.5 Operating system: Mac OS Current behavior. INNER JOIN 'items' AS c1 ON c1.'customer_id' = c0.'id' I have replicated this in SQL as follows: SELECT Environment Elixir 1.9.0 Erlang/OTP 22 Mysql 5.8 Ecto 3.1.7 MyXQL 0.2.6 Current behavior When doing a subquery with unions, the cache is incorrectly applied if the second query in the union is cach. I also need to preload items, providers, statuses and a types My goal is to have an Ecto query that returns a list of customers that have at least one items record with a status_id of 2 AND any other items that this customers record has.

Within items there are some belongsTo relationships: providers items With a join it seems players for whom no votes exist are not returned.I currently have two tables that have a hasMany relationship: customers items (If there's a better way of getting the count of votes for all players then I'd be glad to hear it. 'SELECT count(*) FROM votes WHERE ayer_id = ? AND votes.type = ?', That said, there is no such field as userid in organizations table. Say there's a variable vote_type that may or may not be nil, how can I conditionally add a where clause to the inner select subquery? E.g. Also, Repo.get/1 already executes the query against the database in your case, you should build the query and only then execute it. 'SELECT count(*) FROM votes WHERE ayer_id = ?', In ecto, I've come up with this: vote_count_query = Schemas are maps from database tables into Elixir structs the. It is very powerful and can be used for all the interaction with databases you need, such as inserting, validating, changing, and querying data. (SELECT count(*) FROM votes WHERE ayer_id = players.id AND votes.type = 'motm') AS vote_count Ecto is the go-to database toolkit in the Elixir ecosystem, usually used to interact with SQL databases like Postgres and MySQL. However, depending on the existence of a parameter I want the SELECT subquery to have an extra WHERE clause. (SELECT count(*) FROM votes WHERE ayer_id = players.id) AS vote_count In SQL it looks like this ( player has_many votes): SELECT Ecto is the go-to database toolkit in the Elixir ecosystem, usually used to interact with SQL databases like Postgres and MySQL.

I'm trying to use ecto perform a query with a subquery as one of the SELECTs.