> ## Documentation Index
> Fetch the complete documentation index at: https://helix-digitalocean.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Edges

> Learn how to select edges in your graph.

## `E`   Edge

Select edges from your graph to begin traversal.

```rust theme={null}
E<Type>(edge_id)
```

### Example 1: Selecting a follows edge by ID

<CodeGroup>
  ```rust Query focus={1-3} [expandable] theme={null}
  QUERY GetFollowEdge (edge_id: ID) =>
      follow_edge <- E<Follows>(edge_id)
      RETURN follow_edge

  QUERY CreateUser (name: String, age: U8, email: String) =>
      user <- AddN<User>({
          name: name,
          age: age,
          email: email
      })
      RETURN user

  QUERY CreateRelationships (user1_id: ID, user2_id: ID) =>
      follows <- AddE<Follows>::From(user1_id)::To(user2_id)
      RETURN follows

  ```

  ```rust Schema theme={null}
  N::User {
      name: String,
      age: U8,
      email: String,
  }

  E::Follows {
      From: User,
      To: User,
  }
  ```
</CodeGroup>

<CodeGroup>
  ```python Python [expandable] theme={null}
  from helix.client import Client

  client = Client(local=True, port=6969)

  alice = client.query("CreateUser", {
      "name": "Alice",
      "age": 25,
      "email": "alice@example.com",
  })
  alice_id = alice[0]["user"]["id"]

  bob = client.query("CreateUser", {
      "name": "Bob",
      "age": 28,
      "email": "bob@example.com",
  })
  bob_id = bob[0]["user"]["id"]

  follows = client.query("CreateRelationships", {
      "user1_id": alice_id,
      "user2_id": bob_id,
  })
  edge_id = follows[0]["follows"]["id"]

  result = client.query("GetFollowEdge", {"edge_id": edge_id})
  print(result)
  ```

  ```rust Rust [expandable] theme={null}
  use helix_rs::{HelixDB, HelixDBClient};
  use serde_json::json;

  #[tokio::main]
  async fn main() -> Result<(), Box<dyn std::error::Error>> {
      let client = HelixDB::new(Some("http://localhost"), Some(6969), None);

      let alice: serde_json::Value = client.query("CreateUser", &json!({
          "name": "Alice",
          "age": 25,
          "email": "alice@example.com",
      })).await?;
      let alice_id = alice["user"]["id"].as_str().unwrap().to_string();

      let bob: serde_json::Value = client.query("CreateUser", &json!({
          "name": "Bob",
          "age": 28,
          "email": "bob@example.com",
      })).await?;
      let bob_id = bob["user"]["id"].as_str().unwrap().to_string();

      let follows: serde_json::Value = client.query("CreateRelationships", &json!({
          "user1_id": alice_id,
          "user2_id": bob_id,
      })).await?;
      let edge_id = follows["follows"]["id"].as_str().unwrap().to_string();

      let result: serde_json::Value = client.query("GetFollowEdge", &json!({
          "edge_id": edge_id,
      })).await?;

      println!("GetFollowEdge result: {result:#?}");

      Ok(())
  }
  ```

  ```go Go [expandable] theme={null}
  package main

  import (
      "fmt"
      "log"

      "github.com/HelixDB/helix-go"
  )

  func main() {
      client := helix.NewClient("http://localhost:6969")

      alicePayload := map[string]any{
          "name":  "Alice",
          "age":   uint8(25),
          "email": "alice@example.com",
      }

      var alice map[string]any
      if err := client.Query("CreateUser", helix.WithData(alicePayload)).Scan(&alice); err != nil {
          log.Fatalf("CreateUser (Alice) failed: %s", err)
      }
      aliceID := alice["user"].(map[string]any)["id"].(string)

      bobPayload := map[string]any{
          "name":  "Bob",
          "age":   uint8(28),
          "email": "bob@example.com",
      }

      var bob map[string]any
      if err := client.Query("CreateUser", helix.WithData(bobPayload)).Scan(&bob); err != nil {
          log.Fatalf("CreateUser (Bob) failed: %s", err)
      }
      bobID := bob["user"].(map[string]any)["id"].(string)

      followsPayload := map[string]any{
          "user1_id": aliceID,
          "user2_id": bobID,
      }

      var follows map[string]any
      if err := client.Query("CreateRelationships", helix.WithData(followsPayload)).Scan(&follows); err != nil {
          log.Fatalf("CreateRelationships failed: %s", err)
      }
      edgeID := follows["follows"].(map[string]any)["id"].(string)

      var result map[string]any
      if err := client.Query("GetFollowEdge", helix.WithData(map[string]any{"edge_id": edgeID})).Scan(&result); err != nil {
          log.Fatalf("GetFollowEdge failed: %s", err)
      }

      fmt.Printf("GetFollowEdge result: %#v\n", result)
  }
  ```

  ```typescript TypeScript [expandable] theme={null}
  import HelixDB from "helix-ts";

  async function main() {
      const client = new HelixDB("http://localhost:6969");

      const alice = await client.query("CreateUser", {
          name: "Alice",
          age: 25,
          email: "alice@example.com",
      });
      const aliceId: string = alice.user.id;

      const bob = await client.query("CreateUser", {
          name: "Bob",
          age: 28,
          email: "bob@example.com",
      });
      const bobId: string = bob.user.id;

      const follows = await client.query("CreateRelationships", {
          user1_id: aliceId,
          user2_id: bobId,
      });
      const edgeId: string = follows.follows.id;

      const result = await client.query("GetFollowEdge", {
          edge_id: edgeId,
      });

      console.log("GetFollowEdge result:", result);
  }

  main().catch((err) => {
      console.error("GetFollowEdge query failed:", err);
  });
  ```

  ```bash Curl [expandable] theme={null}
  curl -X POST \
    http://localhost:6969/CreateUser \
    -H 'Content-Type: application/json' \
    -d '{"name":"Alice","age":25,"email":"alice@example.com"}'

  curl -X POST \
    http://localhost:6969/CreateUser \
    -H 'Content-Type: application/json' \
    -d '{"name":"Bob","age":28,"email":"bob@example.com"}'

  curl -X POST \
    http://localhost:6969/CreateRelationships \
    -H 'Content-Type: application/json' \
    -d '{"user1_id":"<alice_id>","user2_id":"<bob_id>"}'

  curl -X POST \
    http://localhost:6969/GetFollowEdge \
    -H 'Content-Type: application/json' \
    -d '{"edge_id":"<edge_id>"}'
  ```
</CodeGroup>

### Example 2: Selecting all follows edges

<CodeGroup>
  ```rust Query theme={null}
  QUERY GetAllFollows () =>
      follows <- E<Follows>
      RETURN follows
  ```

  ```rust Schema theme={null}
  E::Follows {
      From: User,
      To: User,
  }
  ```
</CodeGroup>

<CodeGroup>
  ```python Python theme={null}
  from helix.client import Client

  client = Client(local=True, port=6969)

  result = client.query("GetAllFollows")
  print(result)
  ```

  ```rust Rust [expandable] theme={null}
  use helix_rs::{HelixDB, HelixDBClient};

  #[tokio::main]
  async fn main() -> Result<(), Box<dyn std::error::Error>> {
      let client = HelixDB::new(Some("http://localhost"), Some(6969), None);

      let result: serde_json::Value = client.query("GetAllFollows", &()).await?;
      println!("GetAllFollows result: {result:#?}");

      Ok(())
  }
  ```

  ```go Go [expandable] theme={null}
  package main

  import (
      "fmt"
      "log"

      "github.com/HelixDB/helix-go"
  )

  func main() {
      client := helix.NewClient("http://localhost:6969")

      var result map[string]any
      if err := client.Query("GetAllFollows").Scan(&result); err != nil {
          log.Fatalf("GetAllFollows failed: %s", err)
      }

      fmt.Printf("GetAllFollows result: %#v\n", result)
  }
  ```

  ```typescript TypeScript [expandable] theme={null}
  import HelixDB from "helix-ts";

  async function main() {
      const client = new HelixDB("http://localhost:6969");

      const result = await client.query("GetAllFollows", {});
      console.log("GetAllFollows result:", result);
  }

  main().catch((err) => {
      console.error("GetAllFollows query failed:", err);
  });
  ```

  ```bash Curl theme={null}
  curl -X POST \
    http://localhost:6969/GetAllFollows \
    -H 'Content-Type: application/json' \
    -d '{}'
  ```
</CodeGroup>