Question

我正在试图弄清楚我需要如何进行此查询。我正在尝试删除所有已注册但未在某个时间限制内激活的用户。

function purgeNA($expirePeriod)
{
    $this->db->where('usersStatusesID', 1);
    $this->db->where('UNIX_TIMESTAMP(registrationDate) <', time() - $expirePeriod);
    $this->db->delete($this->usersRegistrationsTable);
}

这是我的数据库结构：

usersRegistrationsTable - userID, registrationDate
usersTable              - userID, usersStatusesID

Answer 1

据我所知，codeigniter不支持JOIN通过Active Record接口查询DELETE。相反，您需要执行SQL语句：

$sql = "DELETE FROM 
          usersTable u
          JOIN usersRegistrationsTable r ON u.userID = r.userID
          WHERE usersStatusesID = 1 AND UNIX_TIMESTAMP(registrationDate) < ?";
$this->db->query($sql, array(time() = $expirePeriod));

从codeigniter删除查询

1 个答案: