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Im trying to understand this section of the ecto documentation:
https://hexdocs.pm/ecto/Ecto.Query.html#preload/3-preload-functions
For...
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I’m doing a fairly complex join where I want to preload an array of ContentMediaItems (called :contents) that are nested in an associatio...
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I have a nested preload with a has_many relation and I would love to filter these references by a join I did on the top level, Here is my...
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If I have a schema like: Posts has many Comments has many Users
Ecto will run three queries when preloading comments and users for a sin...
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I have a couple of questions around preloading, please.
I’m using the ‘hierarchical relationships within a single schema’ example in the...
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I am trying to learn the basics of Ecto from Elixir School and I see in their examples that using this syntax Repo.all(from m in Movie, p...
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Say I have the following schemas:
defmodule Articles do
schema "articles" do
field(:name, :string)
embeds_one(:foo, Foo)
end...
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Hi guys I’m having troubles with one preload.
I’m creating one property and I’m adding preloads, but when not have any register for has_...
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Hi guys just wondering is it possible to preload but with a condition from the main query
Let’s say I have a model named Post. A Post ha...
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I’m trying to replicate the following PostgreSQL query with ecto:
SELECT *
FROM (SELECT * FROM event LIMIT 1000) as e
LEFT JOIN event_ru...
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related resouces: simplest-way-to-do-a-recursive-self-join and schema example and details for this question. Here is the schema
defmodul...
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Hello all,
I’m doing a DB call for the index page of a WhatsApp-style chat app.
I have ChatsUsers -> Chats -> Messages.
I need t...
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Hey
I have a users - teams many to many setup through a users_teams table.
In the team schema I have the following fields mapping to th...
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