diff --git a/backend/app/Command/OrderAggregatesBackfillCommand.php b/backend/app/Command/OrderAggregatesBackfillCommand.php
new file mode 100644
index 0000000..bb72922
--- /dev/null
+++ b/backend/app/Command/OrderAggregatesBackfillCommand.php
@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Command;
+
+use Hyperf\Command\Annotation\Command;
+use Hyperf\Command\Command as HyperfCommand;
+use Hyperf\DbConnection\Db;
+
+#[Command]
+class OrderAggregatesBackfillCommand extends HyperfCommand
+{
+    public function __construct()
+    {
+        parent::__construct('orders:backfill-aggregates');
+    }
+
+    public function configure(): void
+    {
+        parent::configure();
+        $this->setDescription('一次性回填 orders_daily_by_created（连续聚合）和 orders_daily_by_paid（物化视图）的全部历史数据');
+    }
+
+    public function handle(): void
+    {
+        // 1. orders_daily_by_created：调用 TimescaleDB 内置 refresh
+        $this->line('Refreshing orders_daily_by_created (NULL → now() - 1 hour) ...');
+        Db::statement("CALL refresh_continuous_aggregate('orders_daily_by_created', NULL, now() - INTERVAL '1 hour')");
+
+        // 2. orders_daily_by_paid：PG 物化视图。首次必须用非 CONCURRENTLY 模式填充，
+        // 后续重算才能走 CONCURRENTLY（PG 硬约束：CONCURRENTLY cannot be used when not populated）。
+        $rows = Db::select("SELECT ispopulated FROM pg_matviews WHERE matviewname = 'orders_daily_by_paid'");
+        $populated = ! empty($rows) && $rows[0]->ispopulated;
+
+        if ($populated) {
+            $this->line('Refreshing orders_daily_by_paid (CONCURRENTLY) ...');
+            Db::statement('REFRESH MATERIALIZED VIEW CONCURRENTLY orders_daily_by_paid');
+        } else {
+            $this->line('Initial population of orders_daily_by_paid (non-concurrent) ...');
+            Db::statement('REFRESH MATERIALIZED VIEW orders_daily_by_paid');
+        }
+
+        $this->info('Done.');
+    }
+}
diff --git a/backend/test/Cases/Integration/Materialization/MaterializationObjectsTest.php b/backend/test/Cases/Integration/Materialization/MaterializationObjectsTest.php
new file mode 100644
index 0000000..4f29dd0
--- /dev/null
+++ b/backend/test/Cases/Integration/Materialization/MaterializationObjectsTest.php
@@ -0,0 +1,94 @@
+<?php
+
+declare(strict_types=1);
+
+namespace HyperfTest\Cases\Integration\Materialization;
+
+use Hyperf\DbConnection\Db;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * P22.3 物化对象集成测试：跨两类物化对象 + 跨命名空间索引的存在性断言。
+ *
+ * 与 P22.2 烟雾测试 `System/MaterializedViewSmokeTest` 各自关注点不同：
+ * - 烟雾测试：单点测试，专测 by_paid 视图与索引
+ * - 本测试：跨两类对象（连续聚合 + PG 物化视图）+ 跨命名空间索引（pg_indexes 不区分视图类型）
+ *
+ * @internal
+ * @coversNothing
+ */
+class MaterializationObjectsTest extends TestCase
+{
+    /**
+     * @template T
+     * @param callable(): T $callback
+     * @return T
+     */
+    protected function runInCoroutine(callable $callback): mixed
+    {
+        if (\Swoole\Coroutine::getCid() > 0) {
+            return $callback();
+        }
+
+        $result = null;
+        $exception = null;
+        \Swoole\Coroutine\run(static function () use ($callback, &$result, &$exception): void {
+            try {
+                $result = $callback();
+            } catch (\Throwable $e) {
+                $exception = $e;
+            }
+        });
+        if ($exception !== null) {
+            throw $exception;
+        }
+        return $result;
+    }
+
+    public function test_continuous_aggregate_exists(): void
+    {
+        $rows = $this->runInCoroutine(static fn () => Db::select(
+            "SELECT view_name FROM timescaledb_information.continuous_aggregates
+             WHERE view_name = 'orders_daily_by_created'"
+        ));
+        $this->assertCount(1, $rows);
+    }
+
+    public function test_pg_materialized_view_exists(): void
+    {
+        $rows = $this->runInCoroutine(static fn () => Db::select(
+            "SELECT matviewname FROM pg_matviews
+             WHERE matviewname = 'orders_daily_by_paid'"
+        ));
+        $this->assertCount(1, $rows);
+    }
+
+    public function test_refresh_policy_registered(): void
+    {
+        // 显式过滤 hypertable_name，避免未来追加其他连续聚合策略时此断言无关地失败。
+        $rows = $this->runInCoroutine(static fn () => Db::select(
+            "SELECT hypertable_name FROM timescaledb_information.jobs
+             WHERE proc_name = 'policy_refresh_continuous_aggregate'
+               AND hypertable_name = 'orders_daily_by_created'"
+        ));
+        $this->assertCount(1, $rows);
+    }
+
+    public function test_by_created_indexes_present(): void
+    {
+        // P22.1 创建 5 复合索引；chunk 索引名是 `_hyper_*` 不会被 LIKE 'idx_*' 匹配。
+        $rows = $this->runInCoroutine(static fn () => Db::select(
+            "SELECT indexname FROM pg_indexes WHERE indexname LIKE 'idx_orders_daily_by_created%'"
+        ));
+        $this->assertCount(5, $rows);
+    }
+
+    public function test_by_paid_indexes_present(): void
+    {
+        // P22.2 创建 1 UNIQUE + 5 复合 = 6 索引。
+        $rows = $this->runInCoroutine(static fn () => Db::select(
+            "SELECT indexname FROM pg_indexes WHERE indexname LIKE 'idx_orders_daily_by_paid%'"
+        ));
+        $this->assertCount(6, $rows);
+    }
+}