1 files changed, 20 insertions, 0 deletions
diff --git a/db/migrate/20180503150427_add_index_to_namespaces_runners_token.rb b/db/migrate/20180503150427_add_index_to_namespaces_runners_token.rb
new file mode 100644
index 00000000000..4c4e576d49f
--- /dev/null
+++ b/db/migrate/20180503150427_add_index_to_namespaces_runners_token.rb
@@ -0,0 +1,20 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddIndexToNamespacesRunnersToken < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :namespaces, :runners_token, unique: true
+  end
+
+  def down
+    if index_exists?(:namespaces, :runners_token, unique: true)
+      remove_index :namespaces, :runners_token
+    end
+  end
+end