mysql - 単一のクエリでの MySQL の割合

Question

これまでのところ、私はこれを持っています:\

SELECT Bike_Number, MaintFaultDetails, MaintactionTaken, MaintfaultDate, MaintActionDate,
       COUNT(*) 
FROM   MaintHistory
WHERE  (MaintfaultDate + 5) < MaintactionTaken 

SELECT Bike_Number, MaintFaultDetails, MaintactionTaken, MaintfaultDate, MaintActionDate,
       COUNT(*) 
FROM   MaintHistory

5 日以上かかった自転車の割合タグを計算するには、何を追加/編集しますか?

Answer 1

それを試してください

 SELECT Bike_Number, MaintFaultDetails, MaintactionTaken, MaintfaultDate, MaintActionDate,
   Concat(count(Bike_Number)*100/COUNT(*).'%' ) as percent
 FROM   MaintHistory
 WHERE  DATE_ADD(MaintfaultDate, INTERVAL +5 DAY) < MaintactionTaken