首先在开发服务器上进行备份和测试！这将删除包括日志在内的所有客户数据。

SET FOREIGN_KEY_CHECKS=0;
-- reset customers
TRUNCATE customer_address_entity;
TRUNCATE customer_address_entity_datetime;
TRUNCATE customer_address_entity_decimal;
TRUNCATE customer_address_entity_int;
TRUNCATE customer_address_entity_text;
TRUNCATE customer_address_entity_varchar;
TRUNCATE customer_entity;
TRUNCATE customer_entity_datetime;
TRUNCATE customer_entity_decimal;
TRUNCATE customer_entity_int;
TRUNCATE customer_entity_text;
TRUNCATE customer_entity_varchar;
TRUNCATE log_customer;
TRUNCATE log_visitor;
TRUNCATE log_visitor_info;

ALTER TABLE customer_address_entity AUTO_INCREMENT=1;
ALTER TABLE customer_address_entity_datetime AUTO_INCREMENT=1;
ALTER TABLE customer_address_entity_decimal AUTO_INCREMENT=1;
ALTER TABLE customer_address_entity_int AUTO_INCREMENT=1;
ALTER TABLE customer_address_entity_text AUTO_INCREMENT=1;
ALTER TABLE customer_address_entity_varchar AUTO_INCREMENT=1;
ALTER TABLE customer_entity AUTO_INCREMENT=1;
ALTER TABLE customer_entity_datetime AUTO_INCREMENT=1;
ALTER TABLE customer_entity_decimal AUTO_INCREMENT=1;
ALTER TABLE customer_entity_int AUTO_INCREMENT=1;
ALTER TABLE customer_entity_text AUTO_INCREMENT=1;
ALTER TABLE customer_entity_varchar AUTO_INCREMENT=1;
ALTER TABLE log_customer AUTO_INCREMENT=1;
ALTER TABLE log_visitor AUTO_INCREMENT=1;
ALTER TABLE log_visitor_info AUTO_INCREMENT=1;
SET FOREIGN_KEY_CHECKS=1;

Mage::register('isSecureArea', true);

$customers = Mage::getModel("customer/customer")->getCollection();

foreach ($customers as $customer) {
    $customer->delete();
}

一定要知道你在做什么，虽然..你可以禁用客户，以及如果删除不是你需要的。

或者，您只需构建一个shell脚本并执行类似的操作（速度不快，但很干净）：

/*
 * Starter
 * */
public function run()
{
    error_reporting(E_ALL);
    ini_set('display_errors', 1);
    ini_set('memory_limit', '4096M');
    if (!$this->getArg('iknowwhatido') || $this->getArg('iknowwhatido') != 'yes') {
        $this->usageHelp();
        echo "DEACTIVATED (call it with param '-iknowwhatido yes' to make it work!) \n";
        return -1;
    }
    Mage::register('isSecureArea', true);
    $customers = Mage::getModel("customer/customer")->getCollection()->delete();
}