組通過查詢最新的記錄

Question

我需要組通過查詢只有一張桌子，並使用group by查詢只顯示最新記錄 我想組通過手機號碼

我的列名如下：

Reservation_id ，Client_name，Email_address，Mobile_number，Vehical_type

，所以我想通過組此列，並顯示最新記錄

我嘗試此查詢：

SELECT `Reservation_id`,`Client_name`,`Email_address`,`Mobile_number` 
FROM `car_reservation` GROUP BY `Mobile_number` ASC  
ORDER BY `Reservation_id` ASC; 

Answer 1

這是最終QUERY SELECT Reservation_id,Client_name,Email_address,Mobile_number,Pickup_date_time,Pickup_address,Drop_off_address,Distance,Total_price,Vehical_type FROM car_reservation WHERE Reservation_id IN ( SELECT MAX(Reservation_id) FROM car_reservation GROUP BY Mobile_number ORDER BY Reservation_id desc ) ORDER BY Reservation_id DESC

Answer 2

試試這個..

$sql = "SELECT `Reservation_id`,`Client_name`,`Email_address`,`Mobile_number` 
FROM car_reservation GROUP BY Mobile_number ASC ORDER BY Reservation_id ASC LIMIT 1"; 

Answer 3

SELECT Reservation_id,Client_name,Email_address,Mobile_number FROM car_reservation WHERE Mobile_number in (SELECT Mobile_number FROM car_reservation ORDER BY Reservation_id ASC LIMIT 0,1); 

我希望這是你期待什麼。