addExtensionSql("CREATE TABLE `{?_MYSQL_PREFIX?}_user_refs` (
`id` BIGINT(20) UNSIGNED NOT NULL auto_increment,
`userid` BIGINT(20) UNSIGNED NOT NULL DEFAULT 0,
addExtensionSql("CREATE TABLE `{?_MYSQL_PREFIX?}_user_refs` (
`id` BIGINT(20) UNSIGNED NOT NULL auto_increment,
`userid` BIGINT(20) UNSIGNED NOT NULL DEFAULT 0,