本文介绍了不使用子查询的高级分组的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着跟版网的小编来一起学习吧！
问题描述
这是我拥有的数据样本.
This is a sample of the data that I have.
-ID- -Rank- -Type- -Status- -Amount-
1142474 2 Under Offer Approved 23
1148492 1 Present Current 56
1148492 2 Under Offer Approved 3
2273605 1 Present Current 24
ID 相同的地方我只想要排名最高的记录.所以查询的最终结果.
Where the ID is the same I only want the record with the highest rank. So the end result of the query.
-ID- -Rank- -Type- -Status- -Amount-
1142474 2 Under Offer Approved 23
1148492 1 Present Current 56
2273605 1 Present Current 24
现在获取原始数据集是一个昂贵的操作，所以我不想想要做一个按 ID 分组和然后分钟排名，然后然后重新连接到数据集上.因此，查询需要以另一种方式工作.
Now to get the original data set is an expensive operation, so I don't want to do a group by the ID and then mins the rank and then joins back onto the dataset again. Hence the query needs to do its work another way.
干杯安东尼
推荐答案
select t1.id
, t1.rank
, t1.type
, t1.status
, t1.amount
from my_table t1
left outer join my_table as t2
on t1.id = t2.id
and
t2.rank < t1.rank
where t2.id is null
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