Write a SQL query to get the total sales quantity for each product.

Question

Given the following 'sales' table:
```
| sale_id | product_id | sale_date  | quantity |
|---------|------------|------------|----------|
| 1       | 1          | 2023-01-01 | 5        |
| 2       | 2          | 2023-01-02 | 8        |
| 3       | 1          | 2023-01-03 | 3        |
```
What SQL query allows you to retrieve the total number of items sold for each product ?

Accepted Answer

SELECT product_id, SUM(quantity) FROM sales GROUP BY product_id;

Answer

SELECT product_id, COUNT(*) FROM sales GROUP BY product_id;

Answer

SELECT product_id, AVG(quantity) FROM sales GROUP BY product_id;

Answer

SELECT product_id, MAX(quantity) FROM sales GROUP BY product_id;

Question from the SQL - Fundamentals test

Write a SQL query to get the total sales quantity for each product.