refactor 1084

fishercoder1534 · fishercoder1534 · commit f5f1d4129b15 · 2020-04-25T13:52:14.000-07:00
diff --git a/database/_1084.sql b/database/_1084.sql
@@ -1,65 +1,4 @@
---1084. Sales Analysis III
---
---Table: Product
---
---+--------------+---------+
---| Column Name  | Type    |
---+--------------+---------+
---| product_id   | int     |
---| product_name | varchar |
---| unit_price   | int     |
---+--------------+---------+
---product_id is the primary key of this table.
---Table: Sales
---
---+-------------+---------+
---| Column Name | Type    |
---+-------------+---------+
---| seller_id   | int     |
---| product_id  | int     |
---| buyer_id    | int     |
---| sale_date   | date    |
---| quantity    | int     |
---| price       | int     |
---+------ ------+---------+
---This table has no primary key, it can have repeated rows.
---product_id is a foreign key to Product table.
---
---
---Write an SQL query that reports the products that were only sold in spring 2019. That is, between 2019-01-01 and 2019-03-31 inclusive.
---
---The query result format is in the following example:
---
---Product table:
---+------------+--------------+------------+
---| product_id | product_name | unit_price |
---+------------+--------------+------------+
---| 1          | S8           | 1000       |
---| 2          | G4           | 800        |
---| 3          | iPhone       | 1400       |
---+------------+--------------+------------+
---
---Sales table:
---+-----------+------------+----------+------------+----------+-------+
---| seller_id | product_id | buyer_id | sale_date  | quantity | price |
---+-----------+------------+----------+------------+----------+-------+
---| 1         | 1          | 1        | 2019-01-21 | 2        | 2000  |
---| 1         | 2          | 2        | 2019-02-17 | 1        | 800   |
---| 2         | 2          | 3        | 2019-06-02 | 1        | 800   |
---| 3         | 3          | 4        | 2019-05-13 | 2        | 2800  |
---+-----------+------------+----------+------------+----------+-------+
---
---Result table:
---+-------------+--------------+
---| product_id  | product_name |
---+-------------+--------------+
---| 1           | S8           |
---+-------------+--------------+
---The product with id 1 was only sold in spring 2019 while the other two were sold after.
-
---# Write your MySQL query statement below
-
 select s.product_id, p.product_name from Sales s
 join Product p using(product_id)
 group by product_id
-having min(s.sale_date) >= '2019-01-01' and max(s.sale_date) <= '2019-03-31 ';
+having min(s.sale_date) >= '2019-01-01' and max(s.sale_date) <= '2019-03-31 ';
