<?php

namespace IpSupply\CustomBanner\Setup;

use Magento\Framework\Setup\UpgradeSchemaInterface; 
use Magento\Framework\Setup\ModuleContextInterface; 
use Magento\Framework\Setup\SchemaSetupInterface; 
use Magento\Framework\DB\Ddl\Table; 

class UpgradeSchema implements UpgradeSchemaInterface {
    public function upgrade(SchemaSetupInterface $setup, ModuleContextInterface $context) {
        if (version_compare($context->getVersion(), '1.0.1') < 0) {
            $connection = $setup->getConnection();
            $connection->addColumn(
                $setup->getTable('banner_ipsupply'),
                'url_redirect',
                [
                    'type' => Table::TYPE_TEXT,
                    'length' => 255,
                    'nullable' => true,
                    'default' => '#',
                    'comment' => 'Banner url redirect'
                ]
            );
        }
    }
}