echo"ALTER TABLE `tbl_payment_gateway` MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;\n\n";
$dbh->exec("ALTER TABLE `tbl_payment_gateway` MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;");
echo"ALTER TABLE `tbl_customers` ADD `email` VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '' AFTER `phonenumber`;\n\n";
$dbh->exec("ALTER TABLE `tbl_customers` ADD `email` VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT '' AFTER `phonenumber`;");
echo"ALTER TABLE `tbl_plans` CHANGE `validity_unit` `validity_unit` ENUM('Mins','Hrs','Days','Months') CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL;\n\n";
$dbh->exec("ALTER TABLE `tbl_plans` CHANGE `validity_unit` `validity_unit` ENUM('Mins','Hrs','Days','Months') CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL");
echo"ALTER TABLE `tbl_plans` ADD `enabled` tinyint(1) NOT NULL DEFAULT '1' COMMENT '0 disabled' AFTER `pool`;\n\n";
$dbh->exec("ALTER TABLE `tbl_plans` ADD `enabled` tinyint(1) NOT NULL DEFAULT '1' COMMENT '0 disabled' AFTER `pool`;");
echo"ALTER TABLE `tbl_routers` ADD `enabled` tinyint(1) NOT NULL DEFAULT '1' COMMENT '0 disabled' AFTER `description`;\n\n";
$dbh->exec("ALTER TABLE `tbl_routers` ADD `enabled` tinyint(1) NOT NULL DEFAULT '1' COMMENT '0 disabled' AFTER `description`;");
echo"ALTER TABLE `tbl_routers` CHANGE `description` `description` VARCHAR(256) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL;";
$dbh->exec("ALTER TABLE `tbl_routers` CHANGE `description` `description` VARCHAR(256) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL;");