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我想问一下SELECT Class, Race ......下面的查询有什么问题。它触发DB_ERROR

$db = $this->database[GDB];
$character = $this->site->SanitizeName($_POST['character']);
$num_rows = $db->doQuery('SELECT bNation FROM ACCOUNT_CHAR WHERE strAccountID = ? AND ? IN(strCharID1, strCharID2, strCharID3)', $_SESSION['strAccountID'], $character);
if ($num_rows == -1)
{
    $db->GetError(__file__, __line__);
    $this->m_ccError = Template::GetLangVar('DB_ERROR');
    return false;
}
else if ($num_rows == 0)
{
    $this->m_ccError = Template::GetLangVar('CC_INVALID_ACCOUNT');
    return false;
}

$row = $db->doRead();
$nation = $row['bNation'];

$num_rows = $db->doQuery('SELECT Class, Race, Strong, Sta, Dex, Intel, Cha, Points, TransferTime FROM USERDATA u LEFT JOIN PREMIUM_SERVICE p ON p.strAccountID = ? WHERE strUserId = ? AND (TransferTime < IF(p.strAccountID IS NULL, DATEADD(DAY,-2,GETDATE()), DATEADD(MINUTE,-30,GETDATE())) OR TransferTime IS NULL) AND zone<>199 and authority<>255', $_SESSION['strAccountID'], $character);
if ($num_rows == -1)
{
    $db->GetError(__file__, __line__);
    $this->m_ccError = Template::GetLangVar('DB_ERROR');
    return false;
}
else if ($num_rows == 0)
{
    $this->m_ccError = Template::GetLangVar('CC_RECENT_TRANSFER');
    return false;
}

如果我在下面使用它，效果很好。我添加了高级检查，因此请检查下面不想正常工作的最后一个。

$num_rows = $db->doQuery('SELECT Class, Race, Strong, Sta, Dex, Intel, Cha, Points, TransferTime FROM USERDATA WHERE strUserId = ? AND (TransferTime < DATEADD(DAY,-2,GETDATE()) OR TransferTime IS NULL) and zone<>199 and authority<>255', $character);

但是如果我在下面使用这个..它会触发$num_rows == -1并显示DB_ERROR上面的主要功能。

$num_rows = $db->doQuery('SELECT Class, Race, Strong, Sta, Dex, Intel, Cha, Points, TransferTime FROM USERDATA u LEFT JOIN PREMIUM_SERVICE p ON p.strAccountID = ? WHERE strUserId = ? AND (TransferTime < IF(p.strAccountID IS NULL, DATEADD(DAY,-2,GETDATE()), DATEADD(MINUTE,-30,GETDATE())) OR TransferTime IS NULL) AND zone<>199 and authority<>255', $_SESSION['strAccountID'], $character);

如果重要的话，我会使用 MSSQL Server 2005。我将非常感谢任何回应。

4

1 回答 1

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  1. 而不是if then else使用CASE WHEN

    ((TransferTime < CASE WHEN p.strAccountID 为 NULL THEN DATEADD(DAY,-2,GETDATE()) ELSE DATEADD(MINUTE,-30,GETDATE()) END) 或 TransferTime 为 NULL)

  2. 还要完全限定您的 Select 子句以避免不明确的列问题。尝试类似的东西

    选择 u.Class、u.Race、u.Strong、u.Sta、u.Dex、u.Intel、u.Cha、u.Points、u.TransferTime

  3. 您的 ON 子句也看起来很可疑。

于 2013-10-14T03:49:06.837 回答