在mysql表上的特定行中计数数据

Question

嗨我怎样才能计算mysql表的特定列中的整数？

+------------+--------+ 
| product_id | stores | 
+------------+--------+ 
|  371374 |  1 | 
|  283994 |  1 | 
|  232191 |  2 | 
|  131127 |  1 | 
|  284000 |  1 | 
|  371383 |  1 | 
|   83 |  3 | 
|  131156 |  1 | 
|  371385 |  1 | 
|  284004 |  1 | 
+------------+--------+ 

我想指望所有的商店，如1 + 1 + 2 + 1 + ...

Answer 1

SELECT SUM(stores) FROM tablename

Answer 2

尝试：

SELECT SUM(stores) 
    FROM mytable 

Answer 3

尝试此查询

select sum(stores) from <tablename>; 

Answer 4

SELECT SUM(stores) AS sum 
FROM `table_name`