Sql server 其他的子查询集，但这会变得非常混乱和可笑的冗长吗

还有比这更好的方法吗

试试看

<> LI>出于性能原因，我将考虑使用表变量或临时表来避免同一表的多个查询。此外，表变量和临时表至少可以有一个主键，而公共表表达式不编制索引 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

---

您是否尝试过使用公共表表达式？是相同的文档。@rusk使用CTE和表变量有什么区别？也许能帮你弄清楚。“甜美的FA知识”从我这里得到一个加分。我支持cte方法，因为它是值得的。将当前选择包装在cte中，然后执行“从cte union all select中选择*”。

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