MySQL - Fetching lowest value

Question

My database structure contains columns: id, name, value, dealer. I want to retrieve row with lowest value for each dealer

Answer 1

First you need to resolve the lowest value for each dealer, and then retrieve rows having that value for a particular dealer. I would do this that way:

SELECT a.*
FROM   your_table AS a
       JOIN (SELECT dealer,
                    Min(value) AS m
             FROM   your_table
             GROUP  BY dealer) AS b
         ON ( a.dealer= b.dealer
              AND a.value = b.m )