1 files changed, 21 insertions, 0 deletions
diff --git a/db/migrate/20170918223303_add_deployments_index_for_last_deployment.rb b/db/migrate/20170918223303_add_deployments_index_for_last_deployment.rb
new file mode 100644
index 00000000000..b91efb86d98
--- /dev/null
+++ b/db/migrate/20170918223303_add_deployments_index_for_last_deployment.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 AddDeploymentsIndexForLastDeployment < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  TO_INDEX = [:deployments, %i[environment_id id]].freeze
+
+  def up
+    add_concurrent_index(*TO_INDEX)
+  end
+
+  def down
+    remove_concurrent_index(*TO_INDEX)
+  end
+end