Question

我有一个基于网络的报告从我们的SQL服务器中提取大量信息，并想知道向底部添加“总计”行的最佳方法。查询中充满了子查询，所以我不确定在底部添加摘要行的最佳方法。

我知道“最好”的方式是在表示层中执行此操作，但我对表达层有很好的FA知识（因为它已经离开了，并且没有人具有相同的技能设置...！）

            SELECT 
            dbo.Groups.GroupName, dbo.UserGroups.GroupId, dbo.Users.UserName + ' ' + dbo.Users.Surname AS Consultant,
                dbo.UserGroups.UserId,
               (SELECT  COUNT(*) AS ManagerCount
                FROM     dbo.ClientContacts
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (CreatedOn BETWEEN @startDate AND @endDate)) AS ManagersAdded,
               (SELECT  COUNT(*) AS InterviewCount
                FROM     dbo.Interviews
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (InterviewTypeId = 1) AND (Createdon BETWEEN @startDate AND @endDate)) AS FirstInterviewCount,
               (SELECT  COUNT(*) AS InterviewCount
                FROM     dbo.Interviews AS Interviews_1
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (InterviewTypeId in (1,3,4)) AND (Createdon BETWEEN @startDate AND @endDate)) AS InterviewCount,
                (SELECT  COUNT(*) AS InterviewCount
                FROM     dbo.Interviews AS Interviews_1
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (InterviewTypeId in (2)) AND (Createdon BETWEEN @startDate AND @endDate)) AS TelephoneCount,
               (SELECT  COUNT(*) AS DMSpokenTo
                FROM     dbo.NotebookItems
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (NotebookTypeId = 56) AND (CreatedOn BETWEEN @startDate AND @endDate)) AS DMSpokenTo,
               (SELECT  COUNT(*) AS Appspokento
                FROM     dbo.NotebookItems
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (NotebookTypeId = 85) AND (CreatedOn BETWEEN @startDate AND @endDate)) AS AppSpokenTo,
               (SELECT  COUNT(*) AS Marketed
                FROM     dbo.NotebookItems AS NotebookItems_1
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (NotebookTypeId = 124) AND (CreatedOn BETWEEN @startDate AND @endDate)) AS Marketed,
               (SELECT  COUNT(*) AS CVSent
                FROM     dbo.ApplicantActions
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (StatusId <> 28) AND (JobId IS NOT NULL) AND (CreatedOn BETWEEN @startDate AND @endDate)) AS CVSent, 
               (SELECT  COUNT(*) AS CVSent
                FROM     dbo.ApplicantActions
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (CreatedOn BETWEEN @startDate AND @endDate)) AS Speccv,
               (SELECT  COUNT(*) AS Meetings
                FROM     dbo.DiaryEvents
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (EventTypeID = 29) AND (CreatedOn BETWEEN @startDate AND @endDate)) AS Meetings,
               (SELECT  COUNT(*) AS VacanciesAdded
                FROM     dbo.Jobs
                WHERE  (CreatedUserId = dbo.Users.UserId) AND (CreatedOn BETWEEN @startDate AND @endDate)) AS VacanciesAdded,
               (SELECT  SUM(pc.CommissionPerc / 100) AS PermPlacements
                FROM     dbo.Placements
                INNER JOIN PlacementConsultants pc on placements.PlacementID = pc.PlacementId
                INNER JOIN PlacementSectorDefinedColumns psdc on psdc.PlacementId = placements.PlacementID
                WHERE  (isnull(psdc.notnewbusiness,'N') = 'N') AND (pc.UserId = dbo.Users.UserId) AND (placements.CreatedOn BETWEEN @startDate AND @endDate) AND (PlacementTypeId <> 6)) AS [Perm Placements],
               (SELECT  SUM(PlacementFee / 100 * pc.CommissionPerc) AS PermFee
                FROM     dbo.Placements
                INNER JOIN PlacementConsultants pc on placements.PlacementID = pc.PlacementId
                INNER JOIN PlacementSectorDefinedColumns psdc on psdc.PlacementId = placements.PlacementID
                WHERE  (isnull(psdc.notnewbusiness,'N') = 'N') AND (pc.UserId = dbo.Users.UserId) AND (placements.CreatedOn BETWEEN @startDate AND @endDate) AND (PlacementTypeId <> 6)) AS [Perm Fee],
               (SELECT  SUM(pc.CommissionPerc / 100) AS ContractPlacements
                FROM     dbo.Placements
                INNER JOIN PlacementConsultants pc on placements.PlacementID = pc.PlacementId
                INNER JOIN PlacementSectorDefinedColumns psdc on psdc.PlacementId = placements.PlacementID
                WHERE  (isnull(psdc.notnewbusiness,'N') = 'N') AND (pc.UserId = dbo.Users.UserId) AND (placements.CreatedOn BETWEEN @startDate AND @endDate) AND (PlacementTypeId = 6)) AS [Contract Placements],
               (SELECT  SUM(dbo.CONTRACT_NETT_VALUE_FOR_INITIAL_PLACEMENT(Placements_1.PlacementID) / 100 * pc.CommissionPerc) AS ContractFee
                FROM     dbo.Placements AS Placements_1
                INNER JOIN PlacementConsultants pc on Placements_1.PlacementID = pc.PlacementId
                INNER JOIN PlacementSectorDefinedColumns psdc on psdc.PlacementId = Placements_1.PlacementID
                WHERE  (isnull(psdc.notnewbusiness,'N') = 'N') AND (pc.UserId = dbo.Users.UserId) AND (Placements_1.CreatedOn BETWEEN @startDate AND @endDate) AND (PlacementTypeId = 6)) AS [Contract Value]


            FROM    dbo.Groups INNER JOIN
                    dbo.UserGroups ON dbo.Groups.GroupId = dbo.UserGroups.GroupId INNER JOIN
                    dbo.Users ON dbo.UserGroups.UserId = dbo.Users.UserId 
            WHERE (     
                    (dbo.Users.Inactive = 'N') AND (dbo.UserGroups.GroupId = @GroupId) ) 
                    and users.userid not in (select userid from UserGroups where GroupId = 57)

一种方法可能是做一个UNION，然后添加另一组子查询，但这肯定会变得非常混乱和可笑的长期啰嗦？

有没有更好的方法呢？

Answer 1

试试ROLLUP。
出于性能原因，我会考虑使用表变量或临时表来避免对同一个表进行多次查询。此外，表变量和临时表至少可以包含主键，而公共表表达式不会编入索引。

例如：

DECLARE @GroupName VARCHAR(100)
SELECT @GroupName = g.GroupName
FROM   dbo.Groups g
WHERE  g.GroupId = @GroupId

DECLARE @Users TABLE
(
    UserId INT NOT NULL PRIMARY KEY,
    Consultant VARCHAR(100) NOT NULL
)

INSERT @Users (UserId, Consultant)
SELECT u.UserId, u.UserName + ' ' + u.Surname
FROM   dbo.Users u
INNER JOIN dbo.UserGroups ug ON u.UserId = ug.UserId AND ug.GroupId = @GroupId
WHERE  u.Inactive = 'N'
AND    NOT EXISTS (SELECT 1 FROM dbo.UserGroups ne
                   WHERE  u.UserId = ne.UserId
                   AND    ne.GroupId = 57)

DECLARE @ClientContacts TABLE
(
    UserId INT NOT NULL PRIMARY KEY,
    ManagerCount INT NOT NULL
)

INSERT @ClientContacts (UserId, ManagerCount)
SELECT u.UserId, COUNT(*)
FROM   @Users u
INNER JOIN dbo.ClientContacts cc ON cc.CreatedUserId = u.UserId AND cc.CreatedOn BETWEEN @startDate AND @endDate
GROUP BY u.UserId

DECLARE @Interviews TABLE
(
    UserId INT NOT NULL,
    InterviewTypeId INT NOT NULL,
    InterviewCount INT NOT NULL,
    PRIMARY KEY (UserId, InterviewTypeId)
)

INSERT @Interviews (UserId, InterviewTypeId, InterviewCount)
SELECT u.UserId, i.InterviewTypeId, COUNT(*)
FROM   @Users u
INNER JOIN dbo.Interviews i ON u.UserId = i.CreatedUserId AND i.InterviewTypeId BETWEEN 1 AND 4 AND i.CreatedOn BETWEEN @StartDate AND @EndDate
GROUP BY u.UserId, i.InterviewTypeId

-- Rest is an exercise for the reader, but:

SELECT @GroupName AS GroupName,
       @GroupId AS GroupId,
       CASE GROUPING(u.UserId) WHEN 1 THEN NULL ELSE MIN(u.Consultant) END AS Consultant,
       u.UserId,
       SUM(COALESCE(cc.ManagerCount, 0)) AS ManagersAdded,
       SUM(COALESCE(ip.[1], 0)) AS FirstInterviewCount,
       SUM(COALESCE(ip.[1], 0) + COALESCE(ip.[3], 0) + COALESCE(ip.[4], 0)) AS InterviewCount,
       SUM(COALESCE(ip.[2], 0)) AS TelephoneCount
FROM   @Users u
LEFT JOIN @ClientContacts cc ON u.UserId = cc.UserId
LEFT JOIN (SELECT i.UserId, i.InterviewTypeId, i.InterviewCount
           FROM   @Interviews i) AS ii
          PIVOT (SUM(InterviewCount) FOR InterviewTypeId IN ([1], [2], [3], [4])) AS ip ON u.UserId = ip.UserId
GROUP BY ROLLUP(u.UserId)
ORDER BY GROUPING(u.UserId), u.UserId

将总行添加到SQL查询底部的方法

1 个答案: