Stuck in building MySQL query

Question

Given an example of table:

id | item_id | user_id | bid_price
----------------------------------

The task is to select rows wi

Answer 1

You can use MIN() with GROUP BY in the query:

SELECT id, item_id, MIN(bid_price) AS min_bid, user_id 
FROM your_tbl 
GROUP BY item_id 
HAVING item_id in(1, 2, 3);