Question

如果（status == 0）我只想这样做，那么只有在运行条件且打印只与status == 0 record相关时。当status == 1时，它会绕过where子句并打印两个数据状态0和1.我不知道如何为此构建查询。请帮助我。

我的型号代码

 function listing(){    
 $admin_id = $this->session->userdata('admin_id');
 $query = $this->db->select('student_info.*,admin.status')
         ->from('student_info')
         ->where('student_info.admin_id',$admin_id)
         ->join('admin','admin.admin_id = student_info.admin_id')
         ->get();
 return $query->result();
 }

此代码正常工作并打印状态为0或1的单独数据。

只有admin_id = 1包含Status = 1，其他id包含0状态。

Answer 1

试试这个：

        function listing(){    
            $admin_id = $this->session->userdata('admin_id');
            $query = $this->db->select('student_info.*,admin.status')
                ->from('student_info')                    
                ->join('admin','admin.admin_id = student_info.admin_id')
                ->where("student_info.admin_id = IF (admin.status = 0, $admin_id, '>-1'")
                ->get();
            return $query->result();
        }

Answer 2

使用以下代码替换您的功能...


    public class ProfileRepositoryFactory : IProfileRepositoryFactory
    {
        public IProfileRepository Create(string profileType)
        {
            switch(profileType)
            {
                case "A":
                    return new DatabaseProfileRepository(); 

                case  "B":
                    return new XmlProfileRepository();
            }
        }
    }

Answer 3

它解决了我的问题..

function listing()  
 {  
$admin_id = $this->session->userdata('admin_id');
$this->db->select('student_info.*,admin.status');
$this->db->from('student_info');
$this->db->join('admin','admin.admin_id = student_info.admin_id');
$this->db->where('student_info.admin_id',$admin_id);
$this->db->or_where('admin.status < 1');
$query = $this->db->get();
return $query->result();

}

Answer 4

    <?php
    function listing($status)
    {     
if($status == 0){
$this->db->select('student_info.*,admin.status');
        $this->db->from('student_info');
        $this->db->where('student_info.admin_id',$admin_id);
        $this->db->join('admin','admin.admin_id = student_info.admin_id');
        $query = $this->db->get();
        return $query->result();
}else{
$this->db->select('student_info.*,admin.status');
        $this->db->from('student_info');
        $this->db->join('admin','admin.admin_id = student_info.admin_id');
        $query = $this->db->get();
        return $query->result();
}


    }
    ?>

如果条件与where子句

4 个答案: