1 files changed, 21 insertions, 0 deletions
diff --git a/db/migrate/20171216112339_add_foreign_key_for_members.rb b/db/migrate/20171216112339_add_foreign_key_for_members.rb
new file mode 100644
index 00000000000..be17769be6a
--- /dev/null
+++ b/db/migrate/20171216112339_add_foreign_key_for_members.rb
@@ -0,0 +1,21 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddForeignKeyForMembers < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_foreign_key(:members,
+                               :users,
+                               column: :user_id)
+  end
+
+  def down
+    remove_foreign_key(:members, column: :user_id)
+  end
+end