Question

我有一张具有此格式的表格

id  value1  value2  value3  value3/value2
1   16.1    97.2    39  0.401
2   150 89  26  0.29
3   145 14  70  5
df  62  44  93  2.11

我想计算每个值的每个唯一ID的总和，以及value3 / value2。

以下是我最后采取的一个例子。

{{1}}

我如何使用MySQL并将它们保存到新表中？

Answer 1

select id, 
       sum(value1) as value1,
       sum(value2) as value2,
       sum(value3) as value3,
       sum(value3) / sum(value2) as value2_3
from your_table
group by id

你可以把它放在另一个像这样的表中

insert into new_table (col1, col2, col3, col4, col5)
select id, 
       sum(value1) as value1,
       sum(value2) as value2,
       sum(value3) as value3,
       sum(value3) / sum(value2) as value2_3
from your_table
group by id

使用phpmyad将两个表合并为一个

1 个答案: