SQL插入到子查询返回超过1个值的表中

Question

我有一个使用子查询来确定某些值的查询。当第二个子查询中只有一个结果时，它运行良好，但是当第二个子查询中有多个可能的结果时，它会失败并显示

消息 512，级别 16，状态 1，第 1 行子查询返回超过 1 个 价值。当子查询跟在 =, !=, = 或当子查询被用作表达式错误时。

我想为第二个子查询标识的多个值中的每一个插入一条记录。

我的代码如下：

Declare @RoomID char (11)
Select @RoomID = min (RoomID) from tbRoom
While @RoomID is not null
begin
INSERT INTO [dbo].[tbSurveyLocation]
   ([SurveyUID]
   ,[LocationParentID]
   ,[LocationID]
   ,[Comment]
   ,[SurveyParentTypeID]
   ,[CanSurvey]
   ,[Surveyed]
   ,[Status]
   ,[LastUpdate]
   ,[LastUpdateUser]
   ,[ClientCode])

VALUES

((SELECT SurveyUID FROM tbSurvey where SurveyTitle = 'CARLISLE PARK CRICKET PAVILLION')

,30

,(SELECT tbRoom.RoomID FROM         tbBuilding INNER JOIN
              tbBuildingLinkBusinessUnit ON tbBuilding.BuildingID = tbBuildingLinkBusinessUnit.BuildingID INNER JOIN
              tbBusinessUnit ON tbBuildingLinkBusinessUnit.BusinessUnitID = tbBusinessUnit.BusinessUnitID INNER JOIN
              tbFloor ON tbBuilding.BuildingID = tbFloor.BuildingID INNER JOIN
              tbRoom ON tbFloor.FloorID = tbRoom.FloorID
               WHERE tbBusinessUnit.BusinessUnitName like '%CARLISLE PARK CRICKET PAVILLION%')

,'',203 ,1,1,0,CONVERT(DATETIME, '10/01/2014 00:00', 102),'PDS 2014','~K2~')
end

我在这里检查了其他类似的答案，但根据我的情况，找不到与各种子查询直接相关的任何内容。

Answer 1

我应该提前说，我不知道您的问题的更大背景或您需要插入多少条记录。但是，仅根据您发布的代码，这看起来可能会更好地满足您的需求：

INSERT INTO [dbo].[tbSurveyLocation]
([SurveyUID]
,[LocationParentID]
,[LocationID]
,[Comment]
,[SurveyParentTypeID]
,[CanSurvey]
,[Surveyed]
,[Status]
,[LastUpdate]
,[LastUpdateUser]
,[ClientCode])

SELECT  -- I'm going to keep this subquery because it isn't clear whether tbSurvey 
        -- is related to the rooms and business units in any way.
       (SELECT   Top 1 -- this ensures you only get one record back
                 SurveyUID
        FROM     tbSurvey
        WHERE    SurveyTitle = 'CARLISLE PARK CRICKET PAVILLION'
        -- If it matters which row you get, you can sort the survey with an ORDER BY here.
        )
     , 30
     , tblRoom.RoomID
     , ''
     , 203
     , 1
     , 1
     , 0
     , CONVERT(DATETIME, '10/01/2014 00:00', 102)
     ,'PDS 2014'
     ,'~K2~'
FROM   tbBuilding 
    JOIN tbBuildingLinkBusinessUnit ON tbBuilding.BuildingID = tbBuildingLinkBusinessUnit.BuildingID 
    JOIN tbBusinessUnit ON tbBuildingLinkBusinessUnit.BusinessUnitID = tbBusinessUnit.BusinessUnitID 
    JOIN tbFloor ON tbBuilding.BuildingID = tbFloor.BuildingID 
    JOIN tbRoom ON tbFloor.FloorID = tbRoom.FloorID
 WHERE tbBusinessUnit.BusinessUnitName like '%CARLISLE PARK CRICKET PAVILLION%')

我刚刚所做的将为您提供与业务部门“CARLISLE PARK CRICKET PAVILLION”相关联的所有房间的记录。如果您只需要一个房间，您可以将目标列列表下方的SELECT 更改为SELECT TOP 1。 （这将为您提供一个符合标准的任意房间；如果您需要一个特定房间，例如 ID 最低的房间，请在末尾使用 ORDER BY 子句来控制哪个房间是“前 1”。）

现在，如果您需要执行类似链接调查标题和业务单位名称的操作，因此它们是相同的，并针对所有调查/业务单位运行此操作，而不仅仅是 Carlisle Park，请在 cmets 中告诉我.如果是这样，请告诉我您期望进行多少次具有相同调查标题的调查（一个？多于一个？），以及您期望给定业务单位的房间数量是否大于一个。