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CI框架数据库查询时如何不识别别名呢?【】

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Release: 2016-06-13 12:31:53
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CI框架数据库查询时怎么不识别别名呢?【在线等】
$query = $this->db->query('SELECT count(*) as countNum FROM tab_message where messageToUserId='.$userId);
foreach($query->result() as $row) {
$messageNum = $row->countNum;
    }

输出$messageNum时没有结果。

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