Add index to device display field (librenms#19768)

Author: murrant

database/migrations/2026_05_27_100612_add_display_index_to_devices_table.php

@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('devices', function (Blueprint $table): void {
+            $table->index('display');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('devices', function (Blueprint $table): void {
+            $table->dropIndex('devices_display_index');
+        });
+    }
+};

resources/definitions/schema/db_schema.yaml

@@ -684,6 +684,7 @@ devices:
     - { Field: mtu_status, Type: tinyint, 'Null': false, Extra: '', Default: '1' }
   Indexes:
     PRIMARY: { Name: PRIMARY, Columns: [device_id], Unique: true, Type: BTREE }
+    devices_display_index: { Name: devices_display_index, Columns: [display], Unique: false, Type: BTREE }
     devices_hostname_sysname_display_index: { Name: devices_hostname_sysname_display_index, Columns: [hostname, sysName, display], Unique: false, Type: BTREE }
     devices_last_poll_attempted_index: { Name: devices_last_poll_attempted_index, Columns: [last_poll_attempted], Unique: false, Type: BTREE }
     devices_last_polled_index: { Name: devices_last_polled_index, Columns: [last_polled], Unique: false, Type: BTREE }