1 files changed, 21 insertions, 0 deletions
diff --git a/db/post_migrate/20201112145311_add_index_on_sha_for_initial_deployments.rb b/db/post_migrate/20201112145311_add_index_on_sha_for_initial_deployments.rb
new file mode 100644
index 00000000000..15debddb9cc
--- /dev/null
+++ b/db/post_migrate/20201112145311_add_index_on_sha_for_initial_deployments.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class AddIndexOnShaForInitialDeployments < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  NEW_INDEX_NAME = 'index_deployments_on_environment_status_sha'
+  OLD_INDEX_NAME = 'index_deployments_on_environment_id_and_status'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :deployments, %i[environment_id status sha], name: NEW_INDEX_NAME
+    remove_concurrent_index_by_name :deployments, OLD_INDEX_NAME
+  end
+
+  def down
+    add_concurrent_index :deployments, %i[environment_id status], name: OLD_INDEX_NAME
+    remove_concurrent_index_by_name :services, NEW_INDEX_NAME
+  end
+end