diff --git a/app/Console/Commands/BusinessDataPlan.php b/app/Console/Commands/BusinessDataPlan.php
index b29a27af..b12a5687 100644
--- a/app/Console/Commands/BusinessDataPlan.php
+++ b/app/Console/Commands/BusinessDataPlan.php
@@ -80,10 +80,10 @@ class BusinessDataPlan extends Command
             ->where('TABLE_SCHEMA', $database)
             ->get(['TABLE_NAME', 'TABLE_ROWS', 'DATA_LENGTH', 'INDEX_LENGTH'])
             ->mapWithKeys(static fn (object $row): array => [
-                (string) $row->TABLE_NAME => [[
+                (string) $row->TABLE_NAME => [
                     'rows' => $row->TABLE_ROWS === null ? null : (int) $row->TABLE_ROWS,
                     'bytes' => (int) $row->DATA_LENGTH + (int) $row->INDEX_LENGTH,
-                ]],
+                ],
             ])->all();
     }
 }
diff --git a/tests/Unit/Console/BusinessDataPlanTest.php b/tests/Unit/Console/BusinessDataPlanTest.php
new file mode 100644
index 00000000..334b7013
--- /dev/null
+++ b/tests/Unit/Console/BusinessDataPlanTest.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace Tests\Unit\Console;
+
+use App\Console\Commands\BusinessDataPlan;
+use Illuminate\Database\ConnectionInterface;
+use Illuminate\Database\Query\Builder;
+use Illuminate\Support\Collection;
+use Mockery;
+use Mockery\Adapter\Phpunit\MockeryPHPUnitIntegration;
+use Modules\EcommerceFinance\Services\BusinessDataPlacement;
+use PHPUnit\Framework\TestCase;
+use ReflectionMethod;
+
+class BusinessDataPlanTest extends TestCase
+{
+    use MockeryPHPUnitIntegration;
+
+    public function test_mysql_table_statistics_are_keyed_by_their_flat_row_shape(): void
+    {
+        $connection = Mockery::mock(ConnectionInterface::class);
+        $query = Mockery::mock(Builder::class);
+        $placements = Mockery::mock(BusinessDataPlacement::class);
+
+        $placements->shouldReceive('connection')->once()->andReturn($connection);
+        $connection->shouldReceive('getDriverName')->once()->andReturn('mysql');
+        $connection->shouldReceive('getDatabaseName')->once()->andReturn('caiwu_business_mirror');
+        $connection->shouldReceive('table')->once()->with('information_schema.TABLES')->andReturn($query);
+        $query->shouldReceive('where')->once()->with('TABLE_SCHEMA', 'caiwu_business_mirror')->andReturnSelf();
+        $query->shouldReceive('get')->once()->with(['TABLE_NAME', 'TABLE_ROWS', 'DATA_LENGTH', 'INDEX_LENGTH'])
+            ->andReturn(new Collection([(object) [
+                'TABLE_NAME' => 'fact_rows',
+                'TABLE_ROWS' => 123,
+                'DATA_LENGTH' => 4096,
+                'INDEX_LENGTH' => 1024,
+            ]]));
+
+        $method = new ReflectionMethod(BusinessDataPlan::class, 'tableSizes');
+        $sizes = $method->invoke(new BusinessDataPlan(), $placements);
+
+        $this->assertSame(['rows' => 123, 'bytes' => 5120], $sizes['fact_rows']);
+    }
+}