从同一表 sql 中的另一列中获取一个更大的列

Question

I want to select a name that has more received than he sent from my table called data_saver

name      |  Received  | Sent
 -----------------------------
 Kiki      |     7      |    0
 Kim       |     4      |    5
 Lee       |     2      |    1
 John      |     3      |    6

In this case Kiki and Lee will be selected. Please help me for selecting this in MySQLi table, Any help is appreciated.

Answer 1

If Received equals 1 when received otherwise it equals 0, if Sent equals 1 when sent otherwise it equals 0, than you only need to sum() the columns like this:

Select a.name , sum(a.Received) Received, sum(a.Sent) Sent 
from data_saver a 
group by a.name 
having sum(a.Received) > sum(a.Sent)
and a.name ='Kiki'

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