Question

我有以下PHP类：

class SearchAttributeDao extends BaseDao
{
    private $SELECT_CATEGORY_FILTER_BY_IDS;

    function __construct()
    {
        $this->table_name = 'categoryattributes';
        $this->SELECT_CATEGORY_ATTR_BY_IDS = "SELECT csa.attributeid, atn.name FROM "
            .$this->table_name.
            " csa join attributenames atn on csa.attributeid = atn.attributeid where csa.categoryid in (?); ";
    }

    public function getListByCatIds(array $catIds)
    {
        //...
        $attr_list = $this->executeSelectQuery($this->SELECT_CATEGORY_FILTER_BY_IDS, [$catIds]); //Error on this line
        //...
    }
}

因此，当我执行我的应用程序时，我收到一条错误说明：

SQLSTATE [42000]：语法错误或访问冲突：1065查询为空（SQL :) ... 在BaseDao-＆gt; executeSelectQuery（null，array（array（'10523'，'10524'，'10606'，'10423'，'10533'，'10618'）））在SearchAttributeDao.php第24行

上面的堆栈跟踪表明SELECT_CATEGORY_FILTER_BY_IDS为空或空，但我已在构造函数中设置它。我做错了什么？

Answer 1

你在呼唤：

$this->executeSelectQuery($this->SELECT_CATEGORY_FILTER_BY_IDS..

但你已定义：

$this->SELECT_CATEGORY_ATTR_BY_IDS = "SELECT csa.attributeid,...

尝试更正名称，然后重试

SQLSTATE [42000]：语法错误或访问冲突：1065查询为空（SQL :)

1 个答案: