+--------------+---------+
| 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.