Sql server 具有Id字段的不同查询

在下表中，帐户可以有多个状态值（我在这里不提供除状态字段外的所有地址字段）

注意：Id字段的类型为varchar

帐户Id状态
------------------      ------------------  ----------------
1000英里
A1000 1001英里
A1001 1002 CA
A1001 1003 CA
A1002 1004 DE
A1002 1005 PS
我希望得到如下输出，即帐户、状态及其对应的Top1 Id的不同
帐户Id状态
------------------      ------------------  ----------------
1000英里
A1001 1002 CA
A1002 1004 DE
A1002 1005 PS

您可以使用

行号

：

;WITH CTE AS
(
    SELECT  *,
            RN = ROW_NUMBER() OVER(PARTITION BY Account, [State] ORDER BY Id)
    FROM dbo.YourTable
)
SELECT  Account,
        Id,
        [State]
FROM CTE
WHERE RN = 1;

---

您将获得最小的id，如下所示：

select Account, min(Id) as Id, State
from yourtable
group by Account, State

尝试此查询：

SELECT  T.Account,
        T.Id,
        T.[State]
FROM (

SELECT  *, RN = ROW_NUMBER() OVER(PARTITION BY Account, [State] ORDER BY Id)
    FROM dbo.YourTable ) AS T
WHERE T.RN = 1;

---

字段ID是哪种类型？@Galma88:ID是varchar类型。

SELECT  T.Account,
        T.Id,
        T.[State]
FROM (

SELECT  *, RN = ROW_NUMBER() OVER(PARTITION BY Account, [State] ORDER BY Id)
    FROM dbo.YourTable ) AS T
WHERE T.RN = 1;