Migration Added For Unique Check On Increment ID

packages/Webkul/Sales/src/Database/Migrations/2020_09_07_120413_add_unique_index_to_increment_id_in_orders_table.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddUniqueIndexToIncrementIdInOrdersTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('orders', function (Blueprint $table) {
+            $table->string('increment_id')->unique()->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('orders', function (Blueprint $table) {
+
+        });
+    }
+}