SQL Statement/Codeigniter預約

我正在使用每日日曆的預約軟件。我有四個表如下：SQL Statement/Codeigniter預約

Services: 
ID | EmployeeID| ServiceID| RoomID| StartDate  | EndDate 
1 |  1  |  1 | 2 | 2017-06-18 01:00 |2017-06-18 02:00 
2 |  2  |  1 | 1 | 2017-06-18 03:00 |2017-06-18 04:00 

Employees: 
EmployeeID | Name 
    1  | A 
    2  | B 
    3  | C 

Rooms: 
RoomID | Name 
    1 | X 
    2 | Y 
    3 | Z 

EmpBreaks: 
ID | EmployeeID | BreakStart  | BreakEnd 
1 |  1  | 2017-06-18 02:00 | 2017-06-18 03:00

凡服務表存儲預訂的約會細節，僱員表包含了所有員工的列表，客房表包含了所有房間的列表，以及EmpBreaks存儲所有時間當僱員不可用時。

我想執行一個查詢來搜索指定開始日期和結束日期的所有可用員工和房間。

例如：

開始日期 '2017年6月18日01:30'
結束日期 '2017年6月18日02:30'

結果：

僱員{3- }

RoomID {1,3}

在這裏被更新的工作代碼。

function check_available_rooms_therapists() { 
     $this->data['message'] = array(); 
     $this->data['success'] = FALSE; 

    $post = $this->input->post(); 

    $EmployeeFields = array(
     'Employees.EmployeeID', 
     'Employees.Name' 
    ); 

    $sDate = $post['StartDate']; 
    $eDate = $post['EndDate']; 

    $whereEmp = "Employees.EmployeeID NOT IN (SELECT Services.EmployeeID FROM Services where 
     (('" . $sDate . "' BETWEEN Services.StartDate AND Services.EndDate) or 
     ('" . $eDate . "' BETWEEN Services.StartDate AND Services.EndDate) or 
     (Services.StartDate BETWEEN '". $sDate ."' AND '" . $eDate ."') or 
     (Services.EndDate BETWEEN '". $sDate ."' AND '" . $eDate ."')) union 
     (SELECT EMPBREAKS.EMPID FROM EMPBREAKS WHERE(
     ('" . $sDate . "' BETWEEN EMPBREAKS.StartB AND EMPBREAKS.EndB) or 
     ('" . $eDate . "' BETWEEN EMPBREAKS.StartB AND EMPBREAKS.EndB) or 
     (EMPBREAKS.StartB BETWEEN '" . $eDate . "' AND '" . $sDate ."') or 
     (EMPBREAKS.EndB BETWEEN '" . $eDate . "' AND '" . $sDate ."'))))"; 

    $this->db->select($EmployeeFields); 
    $listing = $this->db->get_where('Employees', $whereEmp, 50 , 0); 
    $result = $listing -> result(); 

    $avEmpName = array(); 
    $avEmpID = array(); 

    foreach ($result as $row) { 
     $avEmpID[] = $row->EmployeeID; 
     $avEmpName[] = $row->Name; 
    } 

    $RoomFields = array(
     'Rooms.RoomID', 
     'Rooms.Name' 
    ); 

    $whereRoom = "Rooms.RoomID not in (SELECT Services.RoomID FROM Services WHERE 
     ((Services.startdate BETWEEN '" . $sDate . "' AND '" . $eDate. "') OR 
      (Services.enddate BETWEEN '" . $sDate . "' AND '" . $eDate. "') OR 
      ('" .$sDate . "' BETWEEN Services.startdate AND Services.enddate) OR 
      ('" .$eDate . "' BETWEEN Services.startdate AND Services.enddate)))"; 

    $this->db->select($RoomFields); 
    // $this->db->from('Rooms'); 
    $Rooms = $this->db->get_where('Rooms', $whereRoom, 50 ,0); 
    $Rresult = $Rooms -> result(); 

    $avRoomName = array(); 
    $avRoomID = array(); 

    foreach ($Rresult as $r) { 
     $avRoomID[] = $r->RoomID; 
     $avRoomName[] = $r->Name; 
    } 

     $this->data['EmployeeID'] = $avEmpID; 
     $this->data['RoomID'] = $avRoomID; 
     $this->data['RoomName'] = $avRoomName; 
     $this->data['Name'] = $avEmpName; 

    $this->data['success'] = TRUE; 
    echo json_encode($this->data); 
    die; 
}

來源

2017-06-18 Alaa Al Adnani

編輯你的問題，並提供樣本數據和預期的結果。 –

也許你可以在兩個不同的查詢，輕鬆地分割你的問題，

首先，你可以編寫一個查詢誰是匹配你要排除一切，姑且稱之爲錯誤的結果，後你可以得到所有的員工和房間從員工和客房表誰是不的錯誤的結果

select * from Employees 
where Employees.EmployeeID not in (
SELECT a.EmployeeID 
    FROM Appointments a 
    where ((a.startdate BETWEEN yourstartdate AND yourenddate) or (a.enddate BETWEEN yourstartdate AND yourenddate))); 

select * from Rooms 
where Rooms.RoomID not in (
    SELECT a.RoomID 
    FROM Appointments a 
    where ((a.startdate BETWEEN yourstartdate AND yourenddate) or (a.enddate BETWEEN yourstartdate AND yourenddate)));

來源

2017-06-18 22:10:47 Frank

看來我沒有清楚地解釋我的問題。我已經更新了我的問題。我希望現在很清楚。 –

完美。正是我想要的。謝謝 –

不用客氣，對不起，昨天在編輯之前有點難以理解你的問題！另一個建議你可以在子查詢中使用** DISTINCT ** – Frank

工作SQL語句：

SELECT `Employees`.`EmployeeID`, `Employees`.`Name` 
FROM (`Employees`) 
WHERE `Employees`.`EmployeeID` NOT IN (SELECT Services.EmployeeID FROM Services where 
((yourstartdate BETWEEN Services.StartDate AND Services.EndDate) or 
(yourenddate BETWEEN Services.StartDate AND Services.EndDate) or 
(Services.StartDate BETWEEN yourstartdate AND yourenddate) or 
(Services.EndDate BETWEEN yourstartdate AND yourenddate)) union 
(SELECT EMPBREAKS.EMPID FROM EMPBREAKS WHERE(
(yourstartdate BETWEEN EMPBREAKS.StartB AND EMPBREAKS.EndB) or 
(yourenddate BETWEEN EMPBREAKS.StartB AND EMPBREAKS.EndB) or 
(EMPBREAKS.StartB BETWEEN yourenddate AND yourstartdate) or 
(EMPBREAKS.EndB BETWEEN yourenddate AND yourstartdate))))

和

SELECT `Rooms`.`RoomID`, `Rooms`.`Name` 
FROM (`Rooms`) 
WHERE `Rooms`.`RoomID` not in (SELECT Services.RoomID FROM Services WHERE 
((Services.startdate BETWEEN 'yourstartdate AND yourenddate) OR 
(Services.enddate BETWEEN 'yourstartdate AND yourenddate) OR 
('yourstartdate BETWEEN Services.startdate AND Services.enddate) OR 
(yourenddate BETWEEN Services.startdate AND Services.enddate)))

來源

2017-06-20 01:57:41

SQL Statement/Codeigniter預約

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