Question

I have a rather complicated question (for me at least)

I have the following table structure

| id | roomtype | roomno | feature
| 1  |    STDK  |   11   |  BT
| 2  |    STDK  |   11   |  AE
| 3  |    STDK  |   22   |  SMK
| 4  |    STDK  |   22   |  BT
| 5  |    STDT  |   33   |  NONSMK

and I want to have an output like this

Type: STDK - RoomNo: 11 - Features: BT, AE
Type: STDK - RoomNo: 22 - Features: SMK, BT
Type: STDT - RoomNo: 33 - Features: NONSMK

It’s probably not that complicated but I can’t get it…

Answer 1

This shows the result you’re looking for… But I don’t like the idea of formatting the result in the query!

select
    concat("Type: ", roomtype,
    " - RoomNo: ", roomno,
    " - Features: ", group_concat(feature order by feature separator ', '))
    as result
from t1
group by roomtype, roomno

Here is a working example