这是一个简单的解决方法:

 WITH cte AS /* Declaring a new table named 'cte' to be a clone of your table */
 (SELECT *, ROW_NUMBER() OVER (PARTITION BY id ORDER BY val1 DESC) AS rn
 FROM MyTable /* Selecting only unique values based on the "id" field */
 )
 SELECT * /* Here you can specify several columns to retrieve */
 FROM cte
 WHERE rn = 1

Try

SELECT table.* FROM table 
WHERE otherField = 'otherValue'
GROUP BY table.fieldWantedToBeDistinct
limit x

好问题@aryaxt——你可以看出这是一个好问题，因为你5年前问过这个问题，而我今天在试图找到答案时偶然发现了它!

我只是试图编辑接受的答案，以包括这一点，但如果我的编辑没有使它:

如果你的表不是那么大，并且假设你的主键是一个自动递增的整数，你可以这样做:

SELECT 
  table.*
FROM table
--be able to take out dupes later
LEFT JOIN (
  SELECT field, MAX(id) as id
  FROM table
  GROUP BY field
) as noDupes on noDupes.id = table.id
WHERE
  //this will result in only the last instance being seen
  noDupes.id is not NULL

SELECT * from table where field in (SELECT distinct field from table)

SELECT *
FROM tblname
GROUP BY duplicate_values
ORDER BY ex.VISITED_ON DESC
LIMIT 0 , 30

在ORDER BY我刚刚把例子放在这里，你也可以在这里添加ID字段

我建议使用

SELECT  * from table where field1 in 
(
  select distinct field1 from table
)

这样，如果field1在多个行中有相同的值，将返回所有记录。