Add index on deployable_type/id for deployments

1 files changed, 18 insertions, 0 deletions

diff --git a/db/migrate/20180626125654_add_index_on_deployable_for_deployments.rb b/db/migrate/20180626125654_add_index_on_deployable_for_deployments.rb
new file mode 100644
index 00000000000..a0e3a228f6c
--- /dev/null
+++ b/db/migrate/20180626125654_add_index_on_deployable_for_deployments.rb
@@ -0,0 +1,18 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddIndexOnDeployableForDeployments < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :deployments, [:deployable_type, :deployable_id]
+  end
+
+  def down
+    remove_concurrent_index :deployments, [:deployable_type, :deployable_id]
+  end
+end