Question

我有一个工作查询，以提取表中每个距离的每个运动员的最短时间＆＃34; Tempi＆＃34;。这是一个简单的逐组查询，通过athleteID和distanceID对结果进行分组，并选择最短时间。但我现在需要知道在何时何地获得这些时间。这些数据位于另一个名为＆＃34; Manif＆＃34;的表中。这两个表由ManifID连接，存在于两个表中。如何检索日期和城市的时间？谢谢！

工作查询

SELECT 
    [02_tEMPI].CodSpec, 
    [04_Spec].DescrSpecShort, 
    Min([02_Tempi].Tempo) AS MinDiTempo
FROM  
    [04_Spec] 
    INNER JOIN [03_Manif] 
    INNER JOIN [02_Tempi] 
        ON [03_Manif].IDManif = [02_Tempi].CodManif 
        ON [04_Spec].CodSpec = [02_Tempi].CodSpec
WHERE 
    [02_Tempi].CodAtleta=@CodAtleta AND 
    [03_Manif].Base = @Base 
GROUP BY 
    [04_Spec].DescrSpecShort,
    [02_Tempi].CodSpec
HAVING 
    [02_Tempi].CodSpec <'60'
ORDER BY 
    [02_Tempi].CodSpec

Tempi表结构

CREATE TABLE [dbo].[02_Tempi] (
    [IDRisu]            BIGINT       NOT NULL,
    [CodAtleta]         VARCHAR (12) NULL,
    [CodSpec]           VARCHAR (4)  NULL,
    [CodManif]          INT          NULL,
    [Note]              VARCHAR (14) NULL,
    [CodSocContingente] VARCHAR (14) NULL,
    [Cat]               VARCHAR (5)  NULL,
    [CatFIN]            VARCHAR (4)  NULL,
    [CatPrimato]        INT          NULL,
    [Elaborato]         SMALLINT     NULL,
    [Tempo]             VARCHAR (8)  NULL,
    CONSTRAINT [PK__02_Tempi] PRIMARY KEY CLUSTERED ([IDRisu] ASC)

mANIF表结构

CREATE TABLE [dbo].[03_Manif] (
    [IDManif]    INT           NOT NULL,
    [DescrManif] VARCHAR (100) NULL,
    [LuogoManif] VARCHAR (50)  NULL,
    [Base]       SMALLINT      NULL,
    [LinkPDF]    VARCHAR (250) NULL,
    [Data]       VARCHAR (10)  NULL,
    CONSTRAINT [PK__03_Manif] PRIMARY KEY CLUSTERED ([IDManif] ASC)
);

由于

Answer 1

我认为你可以做row_number窗口函数：

;
WITH    cte
          AS ( SELECT   * ,
                        ROW_NUMBER() OVER ( PARTITION BY [04_Spec].DescrSpecShort,
                                [02_Tempi].CodSpec ORDER BY [02_Tempi].Tempo ) AS rn
               FROM     [04_Spec]
                        INNER JOIN [02_Tempi] ON [04_Spec].CodSpec = [02_Tempi].CodSpec
                        INNER JOIN [03_Manif] ON [03_Manif].IDManif = [02_Tempi].CodManif
               WHERE    [02_Tempi].CodAtleta = @CodAtleta
                        AND [03_Manif].Base = @Base
                        AND [02_Tempi].CodSpec < '60'
             )
    SELECT  *
    FROM    cte
    WHERE   rn = 1

Answer 2

潜在的方法

选择您的最短时间，按athleteID和distanceID分组
将这个结果交叉应用到这3个字段上的Tempi表中，以从原始Tempi记录中获取ManifID（如果可能有多于1个结果，则使用带有某个顺序的SELECT 1）。

使用该ManifID加入Manif表。

SELECT 
    Min(T1.Tempo) [Fastest Tempo],
    T1.AthleteID, 
    T1.DistanceID,
    SUBT.ManifID
FROM [02_Tempi] T1
CROSS APPLY
    (
        SELECT TOP 1 T2.ManifID
        FROM [02_Tempi] T2
        WHERE T2.AthleteID = T1.AthleteID
            AND T2.DistanceID = T1.DistanceID
        ORDER BY T2.Tempo DESC --add other differentiating columns if necessary
    ) SUBT
JOIN [03_Manif] M
    ON SUBT1.ManifID = M.ManifID
GROUP BY 
    T1.AthleteID, 
    T1.DistanceID,
    SUBT.ManifID

SQL按组查询添加额外字段

2 个答案: