Php 你能帮我解决这个sql问题吗？

我有一个db表，如下所示，有重复记录

表格：

product_name            type
--------------------------------
T-Shirt                 Medium
T-Shirt                 Large   
Pant                    Half
Shirt                   Small
T-Shirt                 Medium
Pant                    Half
Pant                    Half
T-Shirt                 Large
T-Shirt                 Medium

product_name    type        total
-----------------------------------
T-shirt         Medium      3
T-Shirt         Large       2
Pant            Half        3
Shirt           Small       1

我需要如下输出。是否可以用一个SQL带来这个结果

输出：

product_name            type
--------------------------------
T-Shirt                 Medium
T-Shirt                 Large   
Pant                    Half
Shirt                   Small
T-Shirt                 Medium
Pant                    Half
Pant                    Half
T-Shirt                 Large
T-Shirt                 Medium

product_name    type        total
-----------------------------------
T-shirt         Medium      3
T-Shirt         Large       2
Pant            Half        3
Shirt           Small       1

实际上，它将对相同的产品名称+类型进行分组，并对分组项目进行计数，从而得出总数。PHP数组可能类似于：

$output = array(
    0 => array(
        "product_name" => "T-Shirt",
        "type" => "Medium",
        "total" => 3
    ),
    1 => array(
        "product_name" => "T-Shirt",
        "type" => "Large",
        "total" => 2
    )
    2 => array(
        "product_name" => "Pant",
        "type" => "Half",
        "total" => 3
    ),
    3 => array(
        "product_name" => "Shirt",
        "type" => "Small",
        "total" => 1
    ),
);

---

一个简单的聚合查询：

SELECT product_name, type, COUNT(*) AS total
FROM thetable
GROUP BY product_name, type