MySQL.DISTINCT

SELECT DISTINCT vend_id
    -> FROM Products;
+---------+
| vend_id |
+---------+
| BRS01   |
| DLL01   |
| FNG01   |
+---------+

SELECT DISTINCT vend_id, prod_price
    -> FROM Products;
+---------+------------+
| vend_id | prod_price |
+---------+------------+
| DLL01   |       3.49 |
| BRS01   |       5.99 |
| BRS01   |       8.99 |
| BRS01   |      11.99 |
| DLL01   |       4.99 |
| FNG01   |       9.49 |
+---------+------------+