Add migration to backfill accounts.deleted_at

db/post_migrate/20231122145507_backfill_account_deleted_at.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class BackfillAccountDeletedAt < ActiveRecord::Migration[6.1]
+  def up
+    safety_assured do
+      execute 'UPDATE accounts SET deleted_at = suspended_at, suspended_at = NULL WHERE domain IS NULL AND suspended_at IS NOT NULL AND NOT EXISTS (SELECT 1 FROM users WHERE account_id = accounts.id)'
+    end
+  end
+
+  def down
+    safety_assured do
+      'UPDATE accounts SET suspended_at = deleted_at WHERE domain is NULL AND suspended_at IS NULL AND deleted_at IS NOT NULL'
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_11_22_145403) do
+ActiveRecord::Schema[7.0].define(version: 2023_11_22_145507) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"