如何获取MySQL表中的值的总和

Question

让我们说一下这些记录的mysql表properties：

---------------------------------
    id        value
---------------------------------
    1           1
    1             1
    2             1
    2             1
    1             1
---------------------------------

现在，我想查询输出：

----------------------------
    id           value
----------------------------
     1            3
     2            2
----------------------------

Answer 1

试试这个

select id,sum(value) as value FROM table group by id

Answer 2

您需要使用GROUP BY参数。

SELECT id, SUM(value) as value FROM tablename GROUP BY id

Answer 3

使用此代码

SELECT id, sum(value) AS value FROM `tablename ` Group by id;

Answer 4

这就是你想要的：

select id, sum(value) as value from properties group by id