mysql - 客户交易总额

Question

我有一个带有购买表的 mysql 数据库:

1   Deal Certificate    int(3)  
2   Purchase Price  decimal(4,2) 
3   Purchase Date   timestamp   
4   Serial Number   varchar(9) 
5   Name    varchar(23)     
6   Email   varchar(42) 

运行以下查询后:

 SELECT * 
   FROM `PURCHASES` 
  WHERE `Purchase Date` 
between '2012-01-01' and '2012-01-31'
  order by email

我看到结果:

345     36.00   2012-01-17 16:42:33     7757-3097   T T     xxx@gmail.com
327     6.00    2012-01-05 10:40:57     0223-3945   R T     yyy@gmail.com
329     12.00   2012-01-02 04:54:45     1087-7072   P B     zzz@msn.com
294     7.00    2012-01-02 04:59:11     4144-2426   P B     zzz@msn.com
285     6.00    2012-01-02 05:12:39     8027-1641   P B     zzz@msn.com
1079    21.00   2012-01-02 05:05:07     2447-7971   P B     zzz@msn.com
331     10.00   2012-01-02 19:14:38     3916-5434   y a     aaa@aol.com

我的问题是，我如何编写一个查询来在一行中汇总该月的每个购买量，以便得到如下所示的结果？

345     36.00   2012-01-17 16:42:33     7757-3097   T T     xxx@gmail.com
327     6.00    2012-01-05 10:40:57     0223-3945   R T     yyy@gmail.com
329     46.00   2012-01-02 04:54:45     1087-7072   P B     zzz@msn.com  
331     10.00   2012-01-02 19:14:38     3916-5434   y a     aaa@aol.com

请注意，用户 P B 的所有交易总计在一行中。

谢谢

Answer 1

未经验证:

SELECT  `Deal Certificate`,
        sum(`Purchase Price`) as sum_price
        `Purchase Date`, 
        `Serial Number`,
        Name,
        Email
FROM PURCHASES 
WHERE Purchase Date between '2012-01-01' and '2012-01-31' 
group by `Deal Certificate`
order by email