车位辨识率导出优化2

app/Exports/LicensePlateRecognitionExport.php

@@ -15,8 +15,8 @@ class LicensePlateRecognitionExport implements FromArray, WithHeadings
         $data = [];
         $index = 1;
         $query = LicensePlateRecognition::query();
-        $columns = ['time_slot'];
-        $query->groupBy('time_slot')->limit(1000)->select($columns)->get()->each(
+        $query->groupBy('time_slot')->latest('time_slot')
+            ->forPage(1, 1000)->get()->each(
             function ($item) use (&$data, &$index) {
                 $countData = (new LicensePlateRecognitionService(
                     new OperationLogService()