> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sqd.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# JSON Queries

> Query entities with object-typed and JSON fields in OpenReader.

The possibility of defining JSON objects as fields of a type in a GraphQL schema has been explained in the [schema reference](../../schema-files/unions-typed-json).

This guide is focusing on how to query such objects and how to fully leverage their potential. Let's take the example of this (non-crypto related, for once😁) schema:

```graphql schema.graphql theme={"system"}
type Entity @entity {
  id: ID!
  a: A
}

type A {
  a: String
  b: B
}

type B {
  a: A
  b: String
  e: Entity
}
```

It's composed of one entity and two JSON objects definitions, used in a "nested" way.

Let's now look at a simple query:

```graphql theme={"system"}
query {
  entities(orderBy: id_ASC) {
    id
    a {
      a
    }
  }
}
```

This will return a result such as this one (imagining this data exists in the database):

```json theme={"system"}
{
  "entities": [
    { "id": "1", "a": { "a": "a" } },
    { "id": "2", "a": { "a": "A" } },
    { "id": "3", "a": { "a": null } },
    { "id": "4", "a": null }
  ]
}
```

Simply enough, the first two objects have an object of type `A` with some content inside, the third one has an object, but its `a` field is `null` and the fourth one simply does not have an `A` object at all.