Add latest changes from gitlab-org/gitlab@12-4-stable-ee

1 files changed, 29 insertions, 0 deletions

diff --git a/db/migrate/20190927055500_create_description_versions.rb b/db/migrate/20190927055500_create_description_versions.rb
new file mode 100644
index 00000000000..6ad34d4a89e
--- /dev/null
+++ b/db/migrate/20190927055500_create_description_versions.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+class CreateDescriptionVersions < ActiveRecord::Migration[5.2]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    create_table :description_versions do |t|
+      t.timestamps_with_timezone
+      t.references :issue, index: false, foreign_key: { on_delete: :cascade }, type: :integer
+      t.references :merge_request, index: false, foreign_key: { on_delete: :cascade }, type: :integer
+      t.references :epic, index: false, foreign_key: { on_delete: :cascade }, type: :integer
+      t.text :description
+    end
+
+    add_index :description_versions, :issue_id, where: 'issue_id IS NOT NULL'
+    add_index :description_versions, :merge_request_id, where: 'merge_request_id IS NOT NULL'
+    add_index :description_versions, :epic_id, where: 'epic_id IS NOT NULL'
+
+    add_column :system_note_metadata, :description_version_id, :bigint
+  end
+
+  def down
+    remove_column :system_note_metadata, :description_version_id
+
+    drop_table :description_versions
+  end
+end