PHP - Mysqli ежемесячный календарь посещаемости

Question

Это моя таблица посещаемости.

id   employee_name   attStatus      empdates
--------------------------------------------------------------------
1    Arun               p             2020-03-15 09:30:28.120
2    Alex               a             2020-03-16 09:30:28.120
3    Jimy               p             2020-03-17 09:30:28.120

---------------------------------------------------------------------

Я хочу получить результат, подобный следующему:

как мне написать скрипт mysqli для печати ежемесячной посещаемости каждый сотрудник?

Answer 1

Я получил решение для этого. Код немного длинный.

$first_day_this_month = date('Y-m-01'); 
$last_day_this_month  = date('Y-m-t');

$sql = "SELECT eid,
  GROUP_CONCAT(if(DAY(`empdates`) = 1, `attStatus`, NULL)) AS '01', 
  GROUP_CONCAT(if(DAY(`empdates`) = 2, `attStatus`, NULL)) AS '02', 
  GROUP_CONCAT(if(DAY(`empdates`) = 3, `attStatus`, NULL)) AS '03', 
  GROUP_CONCAT(if(DAY(`empdates`) = 4, `attStatus`, NULL)) AS '04', 
  GROUP_CONCAT(if(DAY(`empdates`) = 5, `attStatus`, NULL)) AS '05', 
  GROUP_CONCAT(if(DAY(`empdates`) = 6, `attStatus`, NULL)) AS '06', 
  GROUP_CONCAT(if(DAY(`empdates`) = 7, `attStatus`, NULL)) AS '07', 
  GROUP_CONCAT(if(DAY(`empdates`) = 8, `attStatus`, NULL)) AS '08', 
  GROUP_CONCAT(if(DAY(`empdates`) = 9, `attStatus`, NULL)) AS '09', 
  GROUP_CONCAT(if(DAY(`empdates`) = 10, `attStatus`, NULL)) AS '10',
  GROUP_CONCAT(if(DAY(`empdates`) = 11, `attStatus`, NULL)) AS '11', 
  GROUP_CONCAT(if(DAY(`empdates`) = 12, `attStatus`, NULL)) AS '12', 
  GROUP_CONCAT(if(DAY(`empdates`) = 13, `attStatus`, NULL)) AS '13', 
  GROUP_CONCAT(if(DAY(`empdates`) = 14, `attStatus`, NULL)) AS '14', 
  GROUP_CONCAT(if(DAY(`empdates`) = 15, `attStatus`, NULL)) AS '15', 
  GROUP_CONCAT(if(DAY(`empdates`) = 16, `attStatus`, NULL)) AS '16', 
  GROUP_CONCAT(if(DAY(`empdates`) = 17, `attStatus`, NULL)) AS '17', 
  GROUP_CONCAT(if(DAY(`empdates`) = 18, `attStatus`, NULL)) AS '18', 
  GROUP_CONCAT(if(DAY(`empdates`) = 19, `attStatus`, NULL)) AS '19', 
  GROUP_CONCAT(if(DAY(`empdates`) = 20, `attStatus`, NULL)) AS '20', 
  GROUP_CONCAT(if(DAY(`empdates`) = 21, `attStatus`, NULL)) AS '21', 
  GROUP_CONCAT(if(DAY(`empdates`) = 22, `attStatus`, NULL)) AS '22', 
  GROUP_CONCAT(if(DAY(`empdates`) = 23, `attStatus`, NULL)) AS '23', 
  GROUP_CONCAT(if(DAY(`empdates`) = 24, `attStatus`, NULL)) AS '24', 
  GROUP_CONCAT(if(DAY(`empdates`) = 25, `attStatus`, NULL)) AS '25', 
  GROUP_CONCAT(if(DAY(`empdates`) = 26, `attStatus`, NULL)) AS '26', 
  GROUP_CONCAT(if(DAY(`empdates`) = 27, `attStatus`, NULL)) AS '27', 
  GROUP_CONCAT(if(DAY(`empdates`) = 28, `attStatus`, NULL)) AS '28', 
  GROUP_CONCAT(if(DAY(`empdates`) = 29, `attStatus`, NULL)) AS '29', 
  GROUP_CONCAT(if(DAY(`empdates`) = 30, `attStatus`, NULL)) AS '30',  
  GROUP_CONCAT(if(DAY(`empdates`) = 31, `attStatus`, NULL)) AS '31', 
  COUNT(if(`attStatus`='P', `attStatus`, NULL)) AS 'totalP',
  COUNT(if(`attStatus`='A', `attStatus`, NULL)) AS 'totalA',
  COUNT(if(`attStatus`='L', `attStatus`, NULL)) AS 'totalL'

FROM `attendance `
WHERE `empdates` BETWEEN '".$first_day_this_month."' AND '".$last_day_this_month."' 
GROUP BY id";