1 files changed, 31 insertions, 0 deletions
diff --git a/db/migrate/20210709221659_add_work_item_type_id_to_issue.rb b/db/migrate/20210709221659_add_work_item_type_id_to_issue.rb
new file mode 100644
index 00000000000..38292cd37c5
--- /dev/null
+++ b/db/migrate/20210709221659_add_work_item_type_id_to_issue.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+# See https://docs.gitlab.com/ee/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddWorkItemTypeIdToIssue < ActiveRecord::Migration[6.1]
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  def up
+    unless column_exists?(:issues, :work_item_type_id)
+      with_lock_retries do
+        add_column :issues, :work_item_type_id, :bigint
+      end
+    end
+
+    add_concurrent_index :issues, :work_item_type_id
+    add_concurrent_foreign_key :issues, :work_item_types, column: :work_item_type_id, on_delete: nil
+  end
+
+  def down
+    if foreign_key_exists?(:issues, :work_item_types)
+      remove_foreign_key :issues, column: :work_item_type_id
+    end
+
+    with_lock_retries do
+      remove_column :issues, :work_item_type_id
+    end
+  end
+end