CodeIgniter加入AND嗎？

Question

我有這個CodeIgniter查詢，它幾乎可以按預期工作。

$this->db->select()
  ->from('user_issues')
  ->where(array('user_issues.user_id' => $user_id))
  ->join('issue_properties', 'user_issues.issue_id = issue_properties.issue_id')
  ->join('series_properties', 'issue_properties.series_id = series_properties.series_id')
  ->join('user_issues_count', 'user_issues_count.series_id = series_properties.series_id')
  ->group_by('issue_properties.series_id')
  ->order_by('series_properties.name')
  ->offset($offset)->limit($per_page);
}

該查詢應該返回特定於用戶漫畫集合的數據，而最終聯接只是獲取它發現匹配的第一條記錄，而不管user_id 。

是否可以在CodeIgniter或WHERE語句中執行AND聯接之類的操作？

join('user_issues_count', 'user_issues_count.series_id = series_properties.series_id' WHERE 'user_issues_count.user_id = $user_id')

Answer 1

您可以在Active Record Query中在語義上適當的任何地方添加新的where條件。

$this->db->select()
->from('user_issues')
->where(array('user_issues.user_id' => $user_id))
->join('issue_properties','user_issues.issue_id = issue_properties.issue_id')
->join('series_properties', 'issue_properties.series_id = series_properties.series_id')
->join('user_issues_count','user_issues_count.series_id = series_properties.series_id')
->where("user_issues_count.user_id = ".$user_id) //new WHERE condition
->group_by('issue_properties.series_id')
->order_by('series_properties.name')
->offset($offset)
->limit($per_page);

想法是混合和匹配Active Record Functions並打印SQL以查看效果-並對其進行調整，直到獲得所需的SQL ...