MySQL Group By with Distinct

Question

I have a dynamic table (from subquery):

col1 | col2
-----------
 14  | 1000
 14  | 2000
 14  | 3000
 15  | 1000
 15  | 2000

I want to group result by col1, but with distinct col2 value:

col1 | col2
-----------
 14  | 1000
 15  | 2000

Is it possible?

additional info :

• col2 is ordered by ASC
• col1 values is not important, can be removed from result table
• number of rows = number of col1 unique values

Answer 1

请尝试以下一项：

select DISTINCT(col2), col1 from tablename group by col1