Question

我有一个非常小的脚本来从数据库表中获取所有记录，代码在

下面

$query = $this->db->get($this->table_name);
return $query->result();

使用这种语法，我将如何命名'name'？

每次我坚持按顺序排列时，我都会收到错误。

干杯，

Answer 1

我相信get（）函数会立即运行选择查询，并且不接受ORDER BY条件作为参数。我想你需要单独声明条件，然后运行查询。试一试。

$this->db->from($this->table_name);
$this->db->order_by("name", "asc");
$query = $this->db->get(); 
return $query->result();

Answer 2

在单个查询中将此代码用于多个订单。

$this->db->from($this->table_name);
$this->db->order_by("column1 asc,column2 desc");
$query = $this->db->get(); 
return $query->result();

Answer 3

简单易行：

$this->db->order_by("name", "asc");
$query = $this->db->get($this->table_name);
return $query->result();

Answer 4

只需在代码中添加“order_by”子句并将其修改为如下所示。

$this->db->order_by('name', 'asc');
$this->db->where('table_name');

你去。

Answer 5

两个表联接和按名称排序- 100％有效。

$this->db->from('user_login');
$this->db->join('role','user_login.Roleid=role.Roleid');
return $this->db->order_by('Uname ASC')->get('')->result();

Answer 6

试试这个：

        $this->db->select('main.*');
        $this->db->from("ci_table main");
        $this->db->order_by("main.id", "DESC");
        return $this->db->get()->result();

Answer 7

100％正常工作！！！！

cnt=0
for i in range(len(dframe)):
  if (pd.isnull(dframe['Description'][i])):
    cnt+=1

Answer 8

$query = $this->db->from("table_name")->order_by("table_name.column_name desc")->get();
return $query->result();

Answer 9

您也可以这样安排。

return $this->db->order_by('name', 'DESC')->get($this -> table_name)->result();

Answer 10

简单方法：

 status      Status not available at the moment
 transaction hash   0x1e484dfa3afbbeadbcd1db20c38ef0427f8cf4ab04344045c0f10d24f1055a02
 from   0x18244fbf3b47175cd6b4a1183a476c9e70cb7368
 to     WoTResourceACL.UserRegister(string,uint256) 0x3944fb3e4f97b149689dbf9b1e83d8bd361f02ef
 gas    900000 gas 
 hash   0x1e484dfa3afbbeadbcd1db20c38ef0427f8cf4ab04344045c0f10d24f1055a02
 input  0x39c...00000
 decoded input  {
    "string userName": "LYQ",
    "uint256 feiyong": {
        "_hex": "0x64"
    }
}
 decoded output      - 
 logs   [
    {
        "from": "0x3944fb3e4f97b149689dbf9b1e83d8bd361f02ef",
        "topic": "0x27948276c58d5b63b61d92a95fe3cf7e2d6cf9c00ecdddac43cbe4a492a011e2",
        "event": "UserRegisterEVENT",
        "args": {
            "0": "0x18244fBF3B47175cD6b4a1183A476c9e70cB7368",
            "1": "registered",
            "myaddr": "0x18244fBF3B47175cD6b4a1183A476c9e70cB7368",
            "result": "registered",
            "length": 2
        }
    }
]
 value  0 wei

Answer 11

function getProductionGroupItems($itemId){
     $this->db->select("*");
     $this->db->where("id",$itemId);
     $this->db->or_where("parent_item_id",$itemId);

    /*********** order by *********** */
     $this->db->order_by("id", "asc");

     $q=$this->db->get("recipe_products");
     if($q->num_rows()>0){
         foreach($q->result() as $row){
             $data[]=$row;
         }
         return $data;
     }
    return false;
}

Answer 12

使用order_by：

$this->db->order_by("coloumn_name", "desc");
$query = $this->db->get('table_name');
return $query->result();

CodeIgniter - 查询的ORDER BY

12 个答案: