Write a SQL query to calculate the total quantities sold for each product_id.

Question

Given the following 'sales' table:
```
| sale_id | product_id | sale_date  | quantity |
|---------|------------|------------|----------|
| 1       | 1          | 2022-01-01 | 10       |
| 2       | 2          | 2022-01-02 | 5        |
| 3       | 1          | 2022-01-03 | 8        |
```
Which SQL query calculates the total quantities sold for each product_id?

Accepted Answer

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

Answer

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

Answer

SELECT product_id, SUM(quantity) FROM sales;

Answer

SELECT product_id, COUNT(quantity) FROM sales;

Question from the SQL - Fundamentals test

Write a SQL query to calculate the total quantities sold for each product_id.