librenms/database/migrations/2018_07_03_091314_create_locations_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;

class CreateLocationsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('locations', function (Blueprint $table) {
            $table->increments('id');
            $table->string('location')->unique();
            $table->float('lat', 10, 6)->nullable();
            $table->float('lng', 10, 6)->nullable();
            $table->dateTime('timestamp');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::drop('locations');
    }
}