ID_BOOKSLOT ID_USER ID_THERAPIST ID_TIMESLOT

1           10          1        1  (09:00)  
2           11          2        1  (09:00)  
3           12          3        2  (09:15)
4           15          3        1  (09:00)

现在，我的问题是，当我想要回显数据时，它会继续显示时间段的重复：

            thera a       thera b       thera c
  -------------------------------------------------
 09:00       BOOKED      available      available
 09:00     available       BOOKED       available
 09:00     available     available        BOOKED 
 09:15     available       BOOKED       available

如你所见，09：00显示三次，我想要下面的内容

           thera a       thera b       thera c
-------------------------------------------------
 09:00      BOOKED        BOOKED         BOOKED    
 09:15     available      BOOKED       available

加入桌子或其他方面可能有问题。加入表的代码

$mysqli->query("SELECT * FROM bookslot RIGHT JOIN timeslot ON bookslot.id_timeslot = timeslot.id_timeslot LEFT JOIN therapist ON bookslot.id_therapist = therapist.id_therapist"

如果有人有这个系统的解决方案，请帮助我，我很喜欢它！

Answer 1

select 
      id_TimeSlot
    , coalesce(Thera_A, 'available') as Thera_A
    , coalesce(Thera_B, 'available') as Thera_B
    , coalesce(Thera_C, 'available') as Thera_C
from
(
    select
      t.id_TimeSlot
    , max(case b.id_Therapist when 1 then 'booked' else null end) as Thera_A
    , max(case b.id_Therapist when 2 then 'booked' else null end) as Thera_B
    , max(case b.id_Therapist when 3 then 'booked' else null end) as Thera_C
    from      TimeSlot  as t
    left join BookSlot  as b on b.id_TimeSlot  = t.id_TimeSlot
    left join Therapist as p on p.id_Therapist = b.id_Therapist
    group by  t.id_TimeSlot
) as xx ;

测试：

create table TimeSLot  (id_TimeSLot integer);
create table Therapist (id_Therapist integer);
create table BookSlot  (id_Therapist integer, id_TimeSlot integer);

insert into Therapist (id_Therapist)
values (1), (2), (3);

insert into TimeSlot (id_TimeSlot)
values (1), (2), (3), (4), (5);

insert into BookSlot (id_Therapist,id_TimeSlot)
values (1,1), (1,5), (2,1), (2,4), (3,1);

返回

id_TimeSlot  Thera_A    Thera_B    Thera_C
----------------------------------------------
1            booked     booked     booked
2            available  available  available
3            available  available  available
4            available  booked     available
5            booked     available  available

Answer 2

我想你需要GROUP BY id_timeslot，然后检查哪些治疗师被预订（或不是）。

为了避免复杂的查询，请创建表“约会”（id，u_id，t_id，start，stop，day）... 然后，您可以使用BETWEEN开始/停止和WHERE day =某天打印特定日期或时间跨度的约会......

PHP预订时段

ID_BOOKSLOT ID_USER ID_THERAPIST ID_TIMESLOT

2 个答案: