如何在mysql

Question

我在mysql中有像

这样的表

| service_code | charges | caller_number | duration | minutes |
+--------------+---------+---------------+----------+---------+
|           10 |      15 | 8281490235    | 00:00:00 |  1.0000 |
|           11 |      12 | 9961621709    | 00:00:00 |  0.0000 |
|           10 |      15 | 8281490235    | 01:00:44 | 60.7333 |
|           11 |       2 | 9744944316    | 01:00:44 | 60.7333 |
+--------------+---------+---------------+----------+---------+

从这张表中我想得到每个单独的caller_number的费用*分钟。 我这样做了

SELECT sum(charges*minutes) as cost from t8_m4_bill groupby caller_number

但我没有得到预期的输出。请帮帮忙？

Answer 1

SELECT caller_number,sum(charges*minutes) as cost 
from t8_m4_bill 
group by caller_number
order by caller_number