TSQL - 选择具有较高计数的行,当count相同时,选择具有较高id值的行

Question

救命!!!我很难过,并尝试了几个选项无济于事...我需要为每个Pub_id返回一行,并且返回的行应该是具有更高Count的行,并且当有多个行具有最高时伯爵,我需要一个价格较高的人.

我用这个数据填充了一个表格......

pub_id, price_id,   count
7,  59431,            5
22, 39964,            4
39, 112831,           3
39, 120715,           2
47, 95359,            2
74, 142825,           5
74, 106688,           5
74, 37514,            1

---

这就是我需要回归的......

pub_id, price_id,   count
7,  59431,            5
22, 39964,            4
39, 112831,           3
47, 95359,            2
74, 142825,           5

Answer 1

;WITH T
     AS (SELECT *,
                ROW_NUMBER() OVER (PARTITION BY pub_id 
                               ORDER BY [count] DESC, price_id DESC) AS rn
         FROM   your_table)
SELECT pub_id,
       [count],
       price_id
FROM   T  
WHERE rn=1