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如果现在一整天都在做这个查询，我似乎无法理解它。如果你能指出我正确的方向或告诉我我想寻找什么功能，那将意味着很多。我试过在 SQL 中查看 Pivot、Case、Union 和 Group by 函数，但没有运气……但它看起来很简单

我正在从多个表中进行选择。其中一个表包含一行，其中包含我需要在选择中返回的多个值。

SQL：

(SELECT        ONYAK_SIGMAPRO_Issues.IssueId, 
                           ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue AS [Work Ticket], 
                           ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue AS [Customer Name],
                           ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue AS [Job Description],
                           ONYAK_SIGMAPRO_ProjectCategories.CategoryName AS [Printer], 
                           ONYAK_SIGMAPRO_Issues.IssueTitle AS [Task Description], 
                ONYAK_SIGMAPRO_Issues.Progress, 
                           ONYAK_SIGMAPRO_ProjectStatus.StatusName AS [Status], 
                           ONYAK_SIGMAPRO_ProjectPriorities.PriorityName AS [Priority], 
                ONYAK_SIGMAPRO_Issues.DateDue
FROM            (ONYAK_SIGMAPRO_Issues INNER JOIN
                         ONYAK_SIGMAPRO_ProjectCustomFieldValues ON ONYAK_SIGMAPRO_Issues.IssueId = ONYAK_SIGMAPRO_ProjectCustomFieldValues.IssueId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectCustomFields ON 
                         ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldId = ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId AND 
                         ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectCustomFields.ProjectId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectStatus ON ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectStatus.ProjectId AND 
                         ONYAK_SIGMAPRO_Issues.IssueStatusId = ONYAK_SIGMAPRO_ProjectStatus.StatusId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectPriorities ON ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectPriorities.ProjectId AND 
                         ONYAK_SIGMAPRO_Issues.IssuePriorityId = ONYAK_SIGMAPRO_ProjectPriorities.PriorityId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectCategories ON ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectCategories.ProjectId AND 
                         ONYAK_SIGMAPRO_Issues.IssueCategoryId = ONYAK_SIGMAPRO_ProjectCategories.CategoryId
                                         ) 
WHERE        ONYAK_SIGMAPRO_Issues.ProjectId = 2
AND ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId = 1

UNION all

SELECT        ONYAK_SIGMAPRO_Issues.IssueId, 
                           ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue AS [Work Ticket], 
                           ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue AS [Customer Name],
                           ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue AS [Job Description],
                           ONYAK_SIGMAPRO_ProjectCategories.CategoryName AS [Printer], 
                           ONYAK_SIGMAPRO_Issues.IssueTitle AS [Task Description], 
                ONYAK_SIGMAPRO_Issues.Progress, 
                           ONYAK_SIGMAPRO_ProjectStatus.StatusName AS [Status], 
                           ONYAK_SIGMAPRO_ProjectPriorities.PriorityName AS [Priority], 
                ONYAK_SIGMAPRO_Issues.DateDue
FROM            ONYAK_SIGMAPRO_Issues INNER JOIN
                         ONYAK_SIGMAPRO_ProjectCustomFieldValues ON ONYAK_SIGMAPRO_Issues.IssueId = ONYAK_SIGMAPRO_ProjectCustomFieldValues.IssueId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectCustomFields ON 
                         ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldId = ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId AND 
                         ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectCustomFields.ProjectId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectStatus ON ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectStatus.ProjectId AND 
                         ONYAK_SIGMAPRO_Issues.IssueStatusId = ONYAK_SIGMAPRO_ProjectStatus.StatusId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectPriorities ON ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectPriorities.ProjectId AND 
                         ONYAK_SIGMAPRO_Issues.IssuePriorityId = ONYAK_SIGMAPRO_ProjectPriorities.PriorityId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectCategories ON ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectCategories.ProjectId AND 
                         ONYAK_SIGMAPRO_Issues.IssueCategoryId = ONYAK_SIGMAPRO_ProjectCategories.CategoryId
WHERE        ONYAK_SIGMAPRO_Issues.ProjectId = 2
AND ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId = 4

UNION all

SELECT        ONYAK_SIGMAPRO_Issues.IssueId, 
                           ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue AS [Work Ticket], 
                           ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue AS [Customer Name],
                           ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue AS [Job Description],
                           ONYAK_SIGMAPRO_ProjectCategories.CategoryName AS [Printer], 
                           ONYAK_SIGMAPRO_Issues.IssueTitle AS [Task Description], 
                ONYAK_SIGMAPRO_Issues.Progress, 
                           ONYAK_SIGMAPRO_ProjectStatus.StatusName AS [Status], 
                           ONYAK_SIGMAPRO_ProjectPriorities.PriorityName AS [Priority], 
                ONYAK_SIGMAPRO_Issues.DateDue
FROM            ONYAK_SIGMAPRO_Issues INNER JOIN
                         ONYAK_SIGMAPRO_ProjectCustomFieldValues ON ONYAK_SIGMAPRO_Issues.IssueId = ONYAK_SIGMAPRO_ProjectCustomFieldValues.IssueId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectCustomFields ON 
                         ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldId = ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId AND 
                         ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectCustomFields.ProjectId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectStatus ON ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectStatus.ProjectId AND 
                         ONYAK_SIGMAPRO_Issues.IssueStatusId = ONYAK_SIGMAPRO_ProjectStatus.StatusId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectPriorities ON ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectPriorities.ProjectId AND 
                         ONYAK_SIGMAPRO_Issues.IssuePriorityId = ONYAK_SIGMAPRO_ProjectPriorities.PriorityId INNER JOIN
                         ONYAK_SIGMAPRO_ProjectCategories ON ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectCategories.ProjectId AND 
                         ONYAK_SIGMAPRO_Issues.IssueCategoryId = ONYAK_SIGMAPRO_ProjectCategories.CategoryId
WHERE        ONYAK_SIGMAPRO_Issues.ProjectId = 2
AND ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId = 9)
ORDER BY ONYAK_SIGMAPRO_Issues.IssueId

结果：

IssueId工作单 客户姓名 职位描述打印机任务描述 进度状态 优先级 DateDue
1070 8828 8828 8828 海德堡宣传册 0 艺术作品 高 00:00.0
1070 小册子 小册子 海德堡小册子 0 艺术作品 高 00:00.0
1070 Liberty Life 自由生活 Liberty Life 海德堡宣传册 0 艺术作品 高 00:00.0
1082 Liberty Life 自由生活 Liberty Life 海德堡（宣传册 0 艺术作品 高 00:00.0
1082 小册子 小册子 小册子 海德堡 (brochures 0 Art Work High 00:00.0
1082 8294 8294 8294 海德堡（宣传册 0 艺术作品 高 00:00.0
1086 8295 8295 8295 海德堡（宣传册 0 艺术作品 高 00:00.0
1086 稳定增长手册 稳定增长手册 稳定增长手册 海德堡（手册 0 Art Work High 00:00.0
1086 Liberty Life 自由生活 Liberty Life 海德堡（宣传册 0 艺术作品 高 00:00.0
1090 Liberty Life Liberty Life 自由生活 Kamori（VAS 卡 0 艺术品高 00:00.0
1090 VAS 卡 VAS 卡 VAS 卡 Kamori (VAS Card 0 Art Work High 00:00.0
1090 8296 8296 8296 Kamori (VAS Card 0 Art Work High 00:00.0
1104 8300 8300 8300 海德堡 菜单文本 0 艺术作品 高 00:00.0
1104 菜单文本 菜单文本 菜单文本 海德堡 菜单文本 0 艺术作品 高 00:00.0
1104 南非航空公司 南非航空公司 南非航空公司 海德堡 菜单文本 0 艺术作品 高 00:00.0

粗体栏给我带来了麻烦。

我希望选择返回以下内容：

IssueId 工作单 客户姓名 职位描述 打印机任务描述 进度状态 优先级 DateDue
1070 8828 自由生活手册 海德堡手册 0 艺术作品 高 00:00.0
1082 8294 8294 小册子 Heidelberg (brochures 0 Art Work High 00:00.0
1086 8295 Liberty Life 海德堡自由生活 (宣传册 0 艺术作品 高 00:00.0
1090 8296 Liberty Life VAS 卡 Kamori (VAS Card 0 Art Work High 00:00.0
1104 8300 南非航空公司菜单文本海德堡菜单文本 0 艺术作品高 00:00.0

我可以使用什么功能或选择类型？

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2 回答 2

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我仍在努力，但我要说的第一件事在这里有用的是你不需要在这种情况下继续使用 UNION ALL （除非我错过了什么）......只需使用一个 SELECT 查询（不unions) 并将 WHERE 子句更改为如下所示：

WHERE ONYAK_SIGMAPRO_Issues.ProjectId = 2
AND ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId IN (1,4,9)

先尝试一下，看看你会得到什么......然后告诉我们

编辑

根据您在给定链接上发布的屏幕截图（这使问题更容易看到），我可以看到您需要使用DISTINCT关键字。基本上：SELECT DISTINCT 等...

于 2013-03-15T11:04:19.453 回答
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@Matt 简单地使用 DISTINCT 返回与以前相同的结果。这是因为我在选择中从与“IssueId”不同的表中选择“CustomFieldId”列 3 次。但是当我在选择中使用子查询时，我得到了我想要的结果。

SELECT DISTINCT(ONYAK_SIGMAPRO_Issues.IssueId), 
    (SELECT ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue
    FROM ONYAK_SIGMAPRO_ProjectCustomFieldValues INNER JOIN
        ONYAK_SIGMAPRO_Issues ON ONYAK_SIGMAPRO_ProjectCustomFieldValues.IssueId = ONYAK_SIGMAPRO_Issues.IssueId INNER JOIN
        ONYAK_SIGMAPRO_ProjectCustomFields ON 
        ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldId = ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId
            WHERE (ONYAK_SIGMAPRO_Issues.ProjectId = 2) AND (ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId = 1) AND ONYAK_SIGMAPRO_Issues.IssueId = 1070)  AS [Work Ticket], 
    (SELECT ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue
    FROM ONYAK_SIGMAPRO_ProjectCustomFieldValues INNER JOIN
        ONYAK_SIGMAPRO_Issues ON ONYAK_SIGMAPRO_ProjectCustomFieldValues.IssueId = ONYAK_SIGMAPRO_Issues.IssueId INNER JOIN
        ONYAK_SIGMAPRO_ProjectCustomFields ON 
        ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldId = ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId
            WHERE (ONYAK_SIGMAPRO_Issues.ProjectId = 2) AND (ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId = 4) AND ONYAK_SIGMAPRO_Issues.IssueId = 1070) AS [Customer Name],
    (SELECT ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldValue
    FROM ONYAK_SIGMAPRO_ProjectCustomFieldValues INNER JOIN
        ONYAK_SIGMAPRO_Issues ON ONYAK_SIGMAPRO_ProjectCustomFieldValues.IssueId = ONYAK_SIGMAPRO_Issues.IssueId INNER JOIN
        ONYAK_SIGMAPRO_ProjectCustomFields ON 
        ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldId = ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId
            WHERE (ONYAK_SIGMAPRO_Issues.ProjectId = 2) AND (ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId = 9) AND ONYAK_SIGMAPRO_Issues.IssueId = 1070) AS [Job Description],
    ONYAK_SIGMAPRO_ProjectCategories.CategoryName AS [Printer], 
    ONYAK_SIGMAPRO_Issues.IssueTitle AS [Task Description], 
    ONYAK_SIGMAPRO_Issues.Progress, 
    ONYAK_SIGMAPRO_ProjectStatus.StatusName AS [Status], 
    ONYAK_SIGMAPRO_ProjectPriorities.PriorityName AS [Priority], 
    ONYAK_SIGMAPRO_Issues.DateDue
        FROM ONYAK_SIGMAPRO_Issues INNER JOIN
        ONYAK_SIGMAPRO_ProjectCustomFieldValues ON 
        ONYAK_SIGMAPRO_Issues.IssueId = ONYAK_SIGMAPRO_ProjectCustomFieldValues.IssueId INNER JOIN
        ONYAK_SIGMAPRO_ProjectCustomFields ON 
        ONYAK_SIGMAPRO_ProjectCustomFieldValues.CustomFieldId = ONYAK_SIGMAPRO_ProjectCustomFields.CustomFieldId AND 
        ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectCustomFields.ProjectId INNER JOIN
        ONYAK_SIGMAPRO_ProjectStatus ON 
        ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectStatus.ProjectId AND 
        ONYAK_SIGMAPRO_Issues.IssueStatusId = ONYAK_SIGMAPRO_ProjectStatus.StatusId INNER JOIN
        ONYAK_SIGMAPRO_ProjectPriorities ON 
        ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectPriorities.ProjectId AND 
        ONYAK_SIGMAPRO_Issues.IssuePriorityId = ONYAK_SIGMAPRO_ProjectPriorities.PriorityId INNER JOIN
        ONYAK_SIGMAPRO_ProjectCategories ON 
        ONYAK_SIGMAPRO_Issues.ProjectId = ONYAK_SIGMAPRO_ProjectCategories.ProjectId AND 
        ONYAK_SIGMAPRO_Issues.IssueCategoryId = ONYAK_SIGMAPRO_ProjectCategories.CategoryId  
            WHERE ONYAK_SIGMAPRO_Issues.ProjectId = 2
            AND ONYAK_SIGMAPRO_Issues.IssueId = 1070

我如何需要显示所有数据而不仅仅是一个 ID。

我确实通过将“CustomFieldId”选择到 3 个不同的临时表中解决了这个问题，然后最后选择我合并所有表......这正是我想要的:)

于 2013-04-04T11:15:24.290 回答