Making started_at non nullable

db/migrate/20220518115438_add_missing_export_fields.rb

@@ -4,6 +4,7 @@ class AddMissingExportFields < ActiveRecord::Migration[7.0]
       t.column :base_number, :integer, default: 1, null: false
       t.column :increment_number, :integer, default: 1, null: false
       t.remove :daily_run_number, type: :integer
+      t.change_null :started_at, false
     end
   end
 end

db/schema.rb

@@ -260,7 +260,7 @@ ActiveRecord::Schema[7.0].define(version: 2022_05_18_115438) do
 
   create_table "logs_exports", force: :cascade do |t|
     t.datetime "created_at", default: -> { "CURRENT_TIMESTAMP" }
-    t.datetime "started_at"
+    t.datetime "started_at", precision: nil, null: false
     t.integer "base_number", default: 1, null: false
     t.integer "increment_number", default: 1, null: false
   end