为问题件 问题类别 字段 增加索引

database/migrations/2020_11_19_113955_change_order_issue_type_id_index.php

@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class ChangeOrderIssueTypeIdIndex extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('order_issues', function (Blueprint $table) {
+            $table->string('order_issue_type_id')->index()->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('order_issues');
+    }
+}