From 87b7c285364d7949e3c4050d97f91769e6439b77 Mon Sep 17 00:00:00 2001
From: tobi <mail@singhania.at>
Date: Sat, 3 Apr 2021 11:41:37 +0200
Subject: [PATCH] Document SDL schema export in the book

---
 docs/en/src/SUMMARY.md    |  1 +
 docs/en/src/sdl_export.md | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 docs/en/src/sdl_export.md

diff --git a/docs/en/src/SUMMARY.md b/docs/en/src/SUMMARY.md
index 281ecccf..c11a8739 100644
--- a/docs/en/src/SUMMARY.md
+++ b/docs/en/src/SUMMARY.md
@@ -16,6 +16,7 @@
 - [Schema](define_schema.md)
     - [Query and Mutation](query_and_mutation.md)
     - [Subscription](subscription.md)
+    - [SDL Export](sdl_export.md)
 - [Utilities](utilities.md)
     - [Field guard](field_guard.md)
     - [Input value validators](input_value_validators.md)
diff --git a/docs/en/src/sdl_export.md b/docs/en/src/sdl_export.md
new file mode 100644
index 00000000..fb05c652
--- /dev/null
+++ b/docs/en/src/sdl_export.md
@@ -0,0 +1,25 @@
+# SDL Export
+
+You can export your schema in Schema Definition Language (SDL) by using the `Schema::sdl()` method.
+
+
+```rust
+use async_graphql::*;
+
+struct Query;
+
+#[Object]
+impl Query {
+    async fn add(&self, u: i32, v: i32) -> i32 {
+        u + v
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    let schema = Schema::build(Query, EmptyMutation, EmptySubscription).finish();
+    
+    // Print the schema in SDL format
+    println!("{}", &schema.sdl());
+}
+```