ALTER TABLE `dl_advertisers` ADD `currency` VARCHAR( 10 ) NOT NULL AFTER `account_id` ;
CREATE TABLE `currency_database` (
  `id` int(11) NOT NULL,
  `currency` varchar(10) NOT NULL,
  `usd_value` float(10,4) NOT NULL,
  `inserted_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
);

