Sql server 如何按ObjectId对表进行分组？

我对SQL有点熟悉

我使用Sql Server 2012

我有这张桌子：

|Id  | SiteId| IsNormal|     DateReview            | ObjectId |FrequencyId|InspectionId |
|3379|      5|  1      |    2016-09-08 00:00:00.000|    1019  |     1     |     16      |
|3380|      5|  1      |    2016-09-08 00:00:00.000|    1019  |     1     |     20      |
|3381|      5|  0      |    2016-09-08 00:00:00.000|    1020  |     1     |     16      |
|3382|      5|  1      |    2016-09-08 00:00:00.000|    1020  |     1     |     54      |

我需要按ObjectId对表进行GROUP，如果在GROUP表中至少有一行具有false属性，则必须为false

下面是所需的分组表：

|Id        | SiteId| IsNormal    |     DateReview          | ObjectId |FrequencyId|InspectionId |
|3379,3380 |    5  |    1        |  2016-09-08 00:00:00.000|    1019  |     1     |     16,20   |
|3382,3381 |    5  |    0        |  2016-09-08 00:00:00.000|    1020  |     1     |     54,16   |

IsNormal列是位类型。

请这样尝试

 DECLARE @Table TABLE (
    Id INT
    ,SiteId INT
    ,IsNormal bit
    ,DateReview DATETIME
    ,ObjectId INT
    ,FrequencyId INT
    ,InspectionId INT
    )

Insert into @Table values 
 (3379,5,1, '2016-09-08 00:00:00.000',1019,1,16)
,(3380,5,1, '2016-09-08 00:00:00.000',1019,1,20)
,(3381,5,0,'2016-09-08 00:00:00.000',1020,1,16)
,(3382,5,1, '2016-09-08 00:00:00.000',1020,1,54)

SELECT STUFF((
            SELECT ',' + convert(VARCHAR(10), Id)
            FROM @Table t
            WHERE t.ObjectId = t1.objectid
            FOR XML PATH('')
            ), 1, 1, '') AS Id
    ,siteid
    ,CASE 
        WHEN STUFF((
                    SELECT ',' + convert(VARCHAR(10), IsNormal)
                    FROM @Table t
                    WHERE t.ObjectId = t1.objectid
                    FOR XML PATH('')
                    ), 1, 1, '') LIKE '%0%'
            THEN 0
        ELSE 1
        END AS IsNormal
    ,datereview
    ,objectid
    ,FrequencyId
    ,STUFF((
            SELECT ',' + convert(VARCHAR(10), InspectionId)
            FROM @Table t
            WHERE t.ObjectId = t1.objectid
            FOR XML PATH('')
            ), 1, 1, '') AS InspectionId
FROM @Table t1
GROUP BY siteid
    ,datereview
    ,objectid
    ,FrequencyId

试着这样,

 DECLARE @Table TABLE (
    Id INT
    ,SiteId INT
    ,IsNormal bit
    ,DateReview DATETIME
    ,ObjectId INT
    ,FrequencyId INT
    ,InspectionId INT
    )

Insert into @Table values 
 (3379,5,1, '2016-09-08 00:00:00.000',1019,1,16)
,(3380,5,1, '2016-09-08 00:00:00.000',1019,1,20)
,(3381,5,0,'2016-09-08 00:00:00.000',1020,1,16)
,(3382,5,1, '2016-09-08 00:00:00.000',1020,1,54)

SELECT STUFF((
            SELECT ',' + convert(VARCHAR(10), Id)
            FROM @Table t
            WHERE t.ObjectId = t1.objectid
            FOR XML PATH('')
            ), 1, 1, '') AS Id
    ,siteid
    ,CASE 
        WHEN STUFF((
                    SELECT ',' + convert(VARCHAR(10), IsNormal)
                    FROM @Table t
                    WHERE t.ObjectId = t1.objectid
                    FOR XML PATH('')
                    ), 1, 1, '') LIKE '%0%'
            THEN 0
        ELSE 1
        END AS IsNormal
    ,datereview
    ,objectid
    ,FrequencyId
    ,STUFF((
            SELECT ',' + convert(VARCHAR(10), InspectionId)
            FROM @Table t
            WHERE t.ObjectId = t1.objectid
            FOR XML PATH('')
            ), 1, 1, '') AS InspectionId
FROM @Table t1
GROUP BY siteid
    ,datereview
    ,objectid
    ,FrequencyId

您可以使用以下命令：

WITH Src AS
(
    SELECT * FROM (VALUES
    (3379, 5, CAST(1 AS bit), '2016-09-08 00:00:00.000', 1019, 1, 16),
    (3380, 5, CAST(1 AS bit), '2016-09-08 00:00:00.000', 1019, 1, 20),
    (3381, 5, CAST(0 AS bit), '2016-09-08 00:00:00.000', 1020, 1, 16),
    (3382, 5, CAST(1 AS bit), '2016-09-08 00:00:00.000', 1020, 1, 54)
    ) T(Id, SiteId, IsNormal, DateReview, ObjectId, FrequencyId, InspectionId)
)
SELECT Id, SiteId, IsNormal, DateReview, ObjectId, FrequencyId, InspectionId
FROM
(
    SELECT ObjectId, MIN(SiteId) SiteId,
        CONVERT(bit, MIN(CONVERT(int, IsNormal))) IsNormal,
        MIN(DateReview) DateReview, MIN(FrequencyId) FrequencyId
    FROM Src
    GROUP BY ObjectId
) Dist
CROSS APPLY
(
    SELECT STUFF((SELECT ','+CONVERT(varchar(10),Id)
    FROM Src
    WHERE ObjectId=Dist.ObjectId
    FOR XML PATH('')), 1, 1, '')
) Ids(Id)
CROSS APPLY
(
    SELECT STUFF((SELECT ','+CONVERT(varchar(10),InspectionId)
    FROM Src
    WHERE ObjectId=Dist.ObjectId
    FOR XML PATH('')), 1, 1, '')
) InspectionIds(InspectionId)

您可以使用以下命令：

WITH Src AS
(
    SELECT * FROM (VALUES
    (3379, 5, CAST(1 AS bit), '2016-09-08 00:00:00.000', 1019, 1, 16),
    (3380, 5, CAST(1 AS bit), '2016-09-08 00:00:00.000', 1019, 1, 20),
    (3381, 5, CAST(0 AS bit), '2016-09-08 00:00:00.000', 1020, 1, 16),
    (3382, 5, CAST(1 AS bit), '2016-09-08 00:00:00.000', 1020, 1, 54)
    ) T(Id, SiteId, IsNormal, DateReview, ObjectId, FrequencyId, InspectionId)
)
SELECT Id, SiteId, IsNormal, DateReview, ObjectId, FrequencyId, InspectionId
FROM
(
    SELECT ObjectId, MIN(SiteId) SiteId,
        CONVERT(bit, MIN(CONVERT(int, IsNormal))) IsNormal,
        MIN(DateReview) DateReview, MIN(FrequencyId) FrequencyId
    FROM Src
    GROUP BY ObjectId
) Dist
CROSS APPLY
(
    SELECT STUFF((SELECT ','+CONVERT(varchar(10),Id)
    FROM Src
    WHERE ObjectId=Dist.ObjectId
    FOR XML PATH('')), 1, 1, '')
) Ids(Id)
CROSS APPLY
(
    SELECT STUFF((SELECT ','+CONVERT(varchar(10),InspectionId)
    FROM Src
    WHERE ObjectId=Dist.ObjectId
    FOR XML PATH('')), 1, 1, '')
) InspectionIds(InspectionId)

---

为什么在

ObjectId=1020

的情况下，您希望

Id=3382

并且

IsNormal=False

？这些数据来自不同的行。。。。是不是

Id=3381

？@msanz，我更新了我的问题，这是个错误，你能看一下吗。你尝试过解决方案吗？@Tanner我试图在objectId上创建group by，但它不起作用，我得到了一个错误，它要求聚合函数。但是我对这个问题不太熟悉。@Michael：试试我的答案。为什么在

ObjectId=1020

的情况下，您希望

Id=3382

并且

IsNormal=False

？这些数据来自不同的行。。。。是不是

Id=3381

？@msanz，我更新了我的问题，这是个错误，你能看一下吗。你尝试过解决方案吗？@Tanner我试图在objectId上创建group by，但它不起作用，我得到了一个错误，它要求聚合函数。但是我对这个问题不熟悉。@Michael：试试我的答案。谢谢你的帮助。但是我在我的问题上犯了一些错误，如果是位列而不是字符串，则为IsNormal列。你能看到我的更新吗？谢谢你的帮助。但是我在我的问题上犯了一些错误，如果是位列而不是字符串，则为IsNormal列。你能看到我的更新吗修正。嗨，帕维尔。有没有办法加快上面的查询速度？交叉应用需要花费大量的时间。示例已修复。嗨，Pawel。有没有办法加快上面的查询速度？交叉应用需要大量的时间。