獲得最多的產品

Question

目標

我想進行排名，我需要獲得一個列的10個第一。

問題

我的申請表中有以下表格：

+------+---------+
| User | Product |
+------+---------+
| 1    | 1       |
+------+---------+
| 2    | 1       |
+------+---------+
| 3    | 1       |
+------+---------+
| 4    | 1       |
+------+---------+
| 5    | 2       |
+------+---------+
| 6    | 2       |
+------+---------+
| 7    | 2       |
+------+---------+
| 8    | 3       |
+------+---------+
| 9    | 3       |
+------+---------+

我想按照這種模式進行排名：

+---------+----------+
| Product | Quantity |
+---------+----------+
| 1       | 4        |
+---------+----------+
| 2       | 3        |
+---------+----------+
| 3       | 2        |
+---------+----------+

我怎樣才能做到這一點？

Answer 1

你可以這樣做：

SELECT product, COUNT(product)
FROM yourtable
GROUP BY product
ORDER BY COUNT(product) DESC
LIMIT 10;

Answer 2

這樣的事情應該做到這一點。

SELECT TOP 10 Product, COUNT(*)
FROM Table
GROUP BY Product
ORDER BY COUNT(*) DESC;