1 files changed, 30 insertions, 0 deletions
diff --git a/db/migrate/20210503105845_add_project_value_stream_id_to_project_stages.rb b/db/migrate/20210503105845_add_project_value_stream_id_to_project_stages.rb
new file mode 100644
index 00000000000..d888ab4943c
--- /dev/null
+++ b/db/migrate/20210503105845_add_project_value_stream_id_to_project_stages.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+class AddProjectValueStreamIdToProjectStages < ActiveRecord::Migration[6.0]
+  disable_ddl_transaction!
+
+  INDEX_NAME = 'index_analytics_ca_project_stages_on_value_stream_id'
+
+  class ProjectValueStream < ActiveRecord::Base
+    self.table_name = 'analytics_cycle_analytics_project_stages'
+
+    include EachBatch
+  end
+
+  def up
+    ProjectValueStream.reset_column_information
+    # The table was never used, there is no user-facing code that modifies the table, it should be empty.
+    # Since there is no functionality present that depends on this data, it's safe to delete the rows.
+    ProjectValueStream.each_batch(of: 100) do |relation|
+      relation.delete_all
+    end
+
+    transaction do
+      add_reference :analytics_cycle_analytics_project_stages, :project_value_stream, null: false, index: { name: INDEX_NAME }, foreign_key: { on_delete: :cascade, to_table: :analytics_cycle_analytics_project_value_streams }, type: :bigint # rubocop: disable Migration/AddReference, Rails/NotNullColumn
+    end
+  end
+
+  def down
+    remove_reference :analytics_cycle_analytics_project_stages, :project_value_stream
+  end
+end