CodeIgniter Active Record where 子句中的未知列答案

【问题标题】：CodeIgniter Active Record unknown column in where clauseCodeIgniter Active Record where 子句中的未知列
【发布时间】：2015-07-31 04:38:06
【问题描述】：

这是我的活动记录查询！它不断给我错误 where 子句中的未知列：

public function getItemSale($start, $end = 9,$userid,$loc_id,$item)
{
    $sql = "SELECT Name, sum(Qty) as total, sum(Price) as sale  from itransfile where 
    SESSIONID = GETSESSIONID(?) && PayMode IN('CASH','Cheque')" ;

     if(is_numeric($loc_id))
        $sql .= " && location_id = " .$loc_id ;
     else
        $sql .= " && location_id IN(SELECT location_id FROM client_locations where client_id = " .$userid. ")";

     if($item != 'All')
        $sql .= " && Name = `{$item}`"; 

     $sql .= " group by Name  order by sale desc LIMIT ? OFFSET ?;"; 

     $query = $this->db->query($sql, array(date("Y-m-d"),$end,(int)$start));

     return $query->result_array();
}

【问题讨论】：

你的桌子是什么样子的？

标签： php codeigniter activerecord

【解决方案1】：

删除backticks 并使用AND 代替&&

 $sql = "SELECT Name, sum(Qty) as total, sum(Price) as sale  from itransfile where 
        SESSIONID = GETSESSIONID(?) AND PayMode IN('CASH','Cheque')";

if (is_numeric($loc_id))
    $sql .= " AND location_id = " . $loc_id;
else
    $sql .= " AND location_id IN(SELECT location_id FROM client_locations where client_id = " . $userid . ")";

if ($item != 'All')
    $sql .= " AND  Name = '{$item}'";

$sql .= " group by Name  order by sale desc LIMIT ? OFFSET ?;";

$query = $this->db->query($sql, array(date("Y-m-d"), $end, (int) $start));

return $query->result_array();

【讨论】：

完成但问题仍未解决，它给出错误您的 SQL 语法有错误；检查与您的 MySQL 服务器版本相对应的手册，以获取正确的语法，以便在第 2 行的“1 group by Name order by sale desc”附近使用 SELECT Name, sum(Qty) as total, sum(Price) as sale from itransfile where SESSIONID = GETSESSIONID('2015-05-16') && PayMode IN('CASH','Cheque') && location_id = 1 && Name = COMBO 1 group by Name order by sale desc;
我认为未知列的问题已经解决。我认为这是新问题
@Mateen-ul-haq 我认为 COMBO 1 应该用单引号或双引号括起来，例如 "COMBO 1"
@saty no 如果项目中没有空格，它仍然给出相同的错误
SELECT Name, sum(Qty) as total, sum(Price) as sale from itransfile where SESSIONID = GETSESSIONID('2015-05-16') AND PayMode IN('CASH','Cheque' ) AND location_id = 1 && Name = 'COMBO 1' group by Name order by sale desc 这工作正常

【解决方案2】：

替换下一行

if($item != 'All')
        $sql .= " && Name = `{$item}`";

与

if($item != 'All')
            $sql .= " && Name = '{$item}'";

【讨论】：

【解决方案3】：

将反引号替换为单引号。在 MySql 中，反引号表示一个标识符是一个列名：

$sql .= " && Name = '{$item}'";

【讨论】：

已完成但问题未解决，“where 子句”SELECT 名称中的未知列“Abc”，总和（数量）作为总计，总和（价格）作为 itransfile 的销售，其中 SESSIONID = GETSESSIONID('2015- 05-16') && PayMode IN('CASH','Cheque') && location_id IN(SELECT location_id FROM client_locations where client_id = 1) && Name = Abc group by Name order by sale desc;