From 98c70d126db1853c9d4e2040404ce5a21c45568a Mon Sep 17 00:00:00 2001
From: lion <120344285@qq.com>
Date: Mon, 20 Apr 2026 18:04:44 +0800
Subject: [PATCH] =?UTF-8?q?=E5=9C=BA=E9=A6=86?=
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---
 ...4_120000_flip_venue_sort_1_through_101.php | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 database/migrations/2026_04_24_120000_flip_venue_sort_1_through_101.php

diff --git a/database/migrations/2026_04_24_120000_flip_venue_sort_1_through_101.php b/database/migrations/2026_04_24_120000_flip_venue_sort_1_through_101.php
new file mode 100644
index 0000000..bd7cc26
--- /dev/null
+++ b/database/migrations/2026_04_24_120000_flip_venue_sort_1_through_101.php
@@ -0,0 +1,44 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+/**
+ * 一次性数据修正：导入后排序颠倒时，将 sort 在 1～101 之间的记录按 1↔101、2↔100 … 对调。
+ * 公式：新 sort = 102 - 原 sort（仅作用于 1 ≤ sort ≤ 101）。
+ */
+return new class extends Migration
+{
+    public function up(): void
+    {
+        $driver = DB::getDriverName();
+
+        if ($driver === 'mysql') {
+            DB::update(
+                'UPDATE `venues` SET `sort` = 102 - `sort` WHERE `sort` >= 1 AND `sort` <= 101'
+            );
+
+            return;
+        }
+
+        if ($driver === 'pgsql') {
+            DB::update(
+                'UPDATE venues SET sort = 102 - sort WHERE sort >= 1 AND sort <= 101'
+            );
+
+            return;
+        }
+
+        if ($driver === 'sqlite') {
+            DB::update(
+                'UPDATE venues SET sort = 102 - sort WHERE sort >= 1 AND sort <= 101'
+            );
+        }
+    }
+
+    public function down(): void
+    {
+        // 再执行一次相同变换即可还原（对称）
+        $this->up();
+    }
+};