如何计算小组总数？

Question

我有一个查询,它从连接两个表返回以下内容:

+---------------+-----------------+
| Type          |  Price          |
+---------------+-----------------+
| Music         |  19.99          |
| Music         |   3.99          |
| Music         |  21.55          |
| Toy           |  89.95          |
| Toy           |   3.99          |
+---------------+-----------------+

我的问题是如何按类型对产品进行分组,以便显示每种产品类型的单一产品类型和总价？例如:

Music | 45.53
Toy   | 93.94

等等.

Answer 1

SELECT type, SUM(price) FROM table_name GROUP BY (type)