本文实例讲述了thinkphp采用原生query实现关联查询left join的方法。分享给大家供大家参考。具体如下：
thinkphp提供了join方法来实现关联查询,但是很不好用,还是用原生的方便,所以推荐大家用query方法:
复制代码 代码如下:
$model = new model();
$sql = "select a.id, a.attr_name, a.attr_input_type, a.attr_type, a.attr_values, v.attr_value, v.attr_price ".
"from hh_typeattr as a ".
"left join hh_siteattr as v ".
"on v.attr_id = a.id and v.site_id = '$site_id' ".
"where a.type_id = " . intval($type_id) ." or a.type_id = 0 ".
"order by a.listorder, a.attr_type, a.id, v.attr_price, v.id";
$row = $model->query($sql);
$sql = "select a.id, a.attr_name, a.attr_input_type, a.attr_type, a.attr_values, v.attr_value, v.attr_price ".
"from hh_typeattr as a ".
"left join hh_siteattr as v ".
"on v.attr_id = a.id and v.site_id = '$site_id' ".
"where a.type_id = " . intval($type_id) ." or a.type_id = 0 ".
"order by a.listorder, a.attr_type, a.id, v.attr_price, v.id";
$row = $model->query($sql);
希望本文所述对大家的thinkphp框架程序设计有所帮助。
【说明】：本文章由站长整理发布，文章内容不代表本站观点，如文中有侵权行为，请与本站客服联系(QQ:)！