Hi,
I want to query the table below as to return the titles of the column where the intersection of SessionId and Roomx is 0.The type of the Room is TINYINT - which in mysql represents BOOLEAN
Below is the table: - SessionId Room1 Room2 Room3
-
1 0 1 0
-
2 1 0 1
-
For the above table for example for SessionId 1 , query should return Room1 and Room3
Help will be much appreciated.
Thanks.
4  2730  Rabbit 12,516
Recognized Expert Moderator MVP
You'll need to unpivot the data if MySQL supports that functionality. If not, you'll need to unpivot manually with a union query. Once the data is normalized, you can make the query.
Ok.Thanks.
Mysql does not support PIVOT/UNPIVOT.Therefo re i need to do a manual pivot using a union query you said?
This means creating a pivot table?
How should i go about this , for the table above ?
Rabbit 12,516
Recognized Expert Moderator MVP
You don't create a pivot table. You can just use a query to unpivot each column. Something like - SELECT SessionID, 'Room1' AS RoomID, Room1 AS columnName
-
FROM Table1
-
-
UNION
-
-
SELECT SessionID, 'Room2' AS RoomID, Room2 AS columnName
-
FROM Table1
-
-
etc.
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