Sql server 使用基于集合的插入期间创建的id更新现有临时表
我已将一些Sql server 使用基于集合的插入期间创建的id更新现有临时表,sql-server,xml,output,Sql Server,Xml,Output,我已将一些XML提取到一个临时表中，如下所示： declare @INT_ParticipantID INT = 1 declare @XML_Results XML = ' <roots> <root> <ID /> <ResultDateTime>2016-08-16T13:58:21.484Z</ResultDateTime> <Test> <ID>5</ID&
XMLdeclare @INT_ParticipantID INT = 1
declare @XML_Results XML = '
<roots>
<root>
<ID />
<ResultDateTime>2016-08-16T13:58:21.484Z</ResultDateTime>
<Test>
<ID>5</ID>
<ParticipantID>0</ParticipantID>
<Instrument />
<ControlSet />
<Assay />
<CreationDate>0001-01-01T00:00:00Z</CreationDate>
<StartDate>0001-01-01T00:00:00Z</StartDate>
<EndDate>0001-01-01T00:00:00Z</EndDate>
<Closed>false</Closed>
<SlideGenNumber>0</SlideGenNumber>
</Test>
<EnteredByInitials />
<ControlSetLots />
<LotResult1 />
<LotResult2 />
<LotResult3 />
<LotResults>
<ID>13</ID>
<LotNumber />
<LotName />
<ExpiryDate>0001-01-01T00:00:00Z</ExpiryDate>
<Result>
<ID />
<Count>1</Count>
<Mean>2</Mean>
<SD>3</SD>
</Result>
<ParticipantID>0</ParticipantID>
<ApprovalStatus>false</ApprovalStatus>
<LotAnalytes />
<LotInstruments />
<TestDetails />
</LotResults>
<LotResults>
<ID>14</ID>
<LotNumber />
<LotName />
<ExpiryDate>0001-01-01T00:00:00Z</ExpiryDate>
<Result>
<ID />
<Count>4</Count>
<Mean>5</Mean>
<SD>6</SD>
</Result>
<ParticipantID>0</ParticipantID>
<ApprovalStatus>false</ApprovalStatus>
<LotAnalytes />
<LotInstruments />
<TestDetails />
</LotResults>
<LotResults>
<ID>0</ID>
<LotNumber />
<LotName />
<ExpiryDate>0001-01-01T00:00:00Z</ExpiryDate>
<Result>
<ID />
<Count>1</Count>
<Mean>0</Mean>
<SD>0</SD>
</Result>
<ParticipantID>0</ParticipantID>
<ApprovalStatus>false</ApprovalStatus>
<LotAnalytes />
<LotInstruments />
<TestDetails />
</LotResults>
<StandardComment>
<ID>1</ID>
<EnteredBy />
<Description />
</StandardComment>
<ReviewComment>
<ID />
<EnteredBy />
<Description />
</ReviewComment>
</root>
</roots>
'
SELECT r.value('ID[1]','int') AS Transaction_ID
,r.value('ResultDateTime[1]', 'datetime') AS Transaction_DateTime
,r.value('(Test/ID)[1]', 'int') AS QCTest_ID
,lr.value('ID[1]','int') AS Lot_ID
,lr.value('(Result/Count)[1]','int') AS Result_Count
,lr.value('(Result/Mean)[1]','decimal(18, 8)') AS Result_Mean
,lr.value('(Result/SD)[1]','decimal(18, 8)') AS Result_SD
,r.value('(StandardComment/ID)[1]','int') AS StandardComment_ID
,r.value('(ReviewComment/ID)[1]','int') AS ReviewComment_ID
INTO #tempRawXML
FROM @XML_Results.nodes('/roots/root') AS A(r)
CROSS
APPLY r.nodes('LotResults') AS B(lr)
是否有一种方法可以修改上面的内容，从而不插入仅包含生成的
事务ID#tempRawXML更新tempRawXMLdeclare @XML_Results XML = '
<roots>
<root>
<ID>-2</ID>
<ResultDateTime>2016-08-24T10:44:22.829Z</ResultDateTime>
<Test>
<ID>5</ID>
<ParticipantID>0</ParticipantID>
<Instrument />
<ControlSet />
<Assay />
<CreationDate>0001-01-01T00:00:00Z</CreationDate>
<StartDate>0001-01-01T00:00:00Z</StartDate>
<EndDate>0001-01-01T00:00:00Z</EndDate>
<Closed>false</Closed>
<SlideGenNumber>0</SlideGenNumber>
</Test>
<EnteredByInitials />
<ControlSetLots />
<LotResults>
<ID>13</ID>
<LotNumber />
<LotName />
<ExpiryDate>0001-01-01T00:00:00Z</ExpiryDate>
<Result>
<ID />
<Count>5</Count>
<Mean>6</Mean>
<SD>7</SD>
</Result>
<ParticipantID>0</ParticipantID>
<ApprovalStatus>false</ApprovalStatus>
<LotAnalytes />
<LotInstruments />
<TestDetails />
</LotResults>
<LotResults>
<ID>14</ID>
<LotNumber />
<LotName />
<ExpiryDate>0001-01-01T00:00:00Z</ExpiryDate>
<Result>
<ID />
<Count>1</Count>
<Mean>0</Mean>
<SD>0</SD>
</Result>
<ParticipantID>0</ParticipantID>
<ApprovalStatus>false</ApprovalStatus>
<LotAnalytes />
<LotInstruments />
<TestDetails />
</LotResults>
<LotResults>
<ID>0</ID>
<LotNumber />
<LotName />
<ExpiryDate>0001-01-01T00:00:00Z</ExpiryDate>
<Result>
<ID />
<Count>1</Count>
<Mean>0</Mean>
<SD>0</SD>
</Result>
<ParticipantID>0</ParticipantID>
<ApprovalStatus>false</ApprovalStatus>
<LotAnalytes />
<LotInstruments />
<TestDetails />
</LotResults>
<StandardComment>
<ID />
<EnteredBy />
<Description />
</StandardComment>
<ReviewComment>
<ID />
<EnteredBy />
<Description />
</ReviewComment>
</root>
<root>
<ID>-1</ID>
<ResultDateTime>2016-08-24T10:44:22.829Z</ResultDateTime>
<Test>
<ID>5</ID>
<ParticipantID>0</ParticipantID>
<Instrument />
<ControlSet />
<Assay />
<CreationDate>0001-01-01T00:00:00Z</CreationDate>
<StartDate>0001-01-01T00:00:00Z</StartDate>
<EndDate>0001-01-01T00:00:00Z</EndDate>
<Closed>false</Closed>
<SlideGenNumber>0</SlideGenNumber>
</Test>
<EnteredByInitials />
<ControlSetLots />
<LotResults>
<ID>13</ID>
<LotNumber />
<LotName />
<ExpiryDate>0001-01-01T00:00:00Z</ExpiryDate>
<Result>
<ID />
<Count>1</Count>
<Mean>0</Mean>
<SD>0</SD>
</Result>
<ParticipantID>0</ParticipantID>
<ApprovalStatus>false</ApprovalStatus>
<LotAnalytes />
<LotInstruments />
<TestDetails />
</LotResults>
<LotResults>
<ID>14</ID>
<LotNumber />
<LotName />
<ExpiryDate>0001-01-01T00:00:00Z</ExpiryDate>
<Result>
<ID />
<Count>1</Count>
<Mean>2</Mean>
<SD>3</SD>
</Result>
<ParticipantID>0</ParticipantID>
<ApprovalStatus>false</ApprovalStatus>
<LotAnalytes />
<LotInstruments />
<TestDetails />
</LotResults>
<LotResults>
<ID>0</ID>
<LotNumber />
<LotName />
<ExpiryDate>0001-01-01T00:00:00Z</ExpiryDate>
<Result>
<ID />
<Count>1</Count>
<Mean>0</Mean>
<SD>0</SD>
</Result>
<ParticipantID>0</ParticipantID>
<ApprovalStatus>false</ApprovalStatus>
<LotAnalytes />
<LotInstruments />
<TestDetails />
</LotResults>
<StandardComment>
<ID />
<EnteredBy />
<Description />
</StandardComment>
<ReviewComment>
<ID />
<EnteredBy />
<Description />
</ReviewComment>
</root>
</roots>
'
MERGEOUTPUTOld\u IDProcessedTransaction\u IDINSERTLot#tempRawXMLID映射IDENTITY游标，从而冒险回到“程序方法的黑暗领域”（我认为@Shnugo现在正在“诅咒”我的名字，强烈反对@Shnugo）
在成功的顶级结果事务INSERT
之后，使用上面的原始XML和生成的ID，我需要将剩余的“结果特定”信息插入到各自的表中，这些表的名称尚未根据resultLotID
确定组合过程性、基于集合的动态SQL（如果有这样的事情）来实现这一点：
-- recursively access each associated Lot table based on associated Lot ID's
DECLARE @LotNumber NVARCHAR(20), @LotID INT
-- Querystring to hold all set update calls
DECLARE @ResultQueryString NVARCHAR(MAX) = ''
DECLARE Lot_Cursor
CURSOR FAST_FORWARD
FOR
-- Select the lot numbers based on the available IDs
SELECT
DISTINCT L.pk_id AS LotID,
L.number AS LotNumber
FROM dbo.Lot L
LEFT
JOIN #tempRawXML TR
ON TR.Lot_ID = L.pk_id
WHERE L.pk_id IN (TR.Lot_ID)
OPEN Lot_Cursor
FETCH
NEXT
FROM Lot_Cursor
INTO @LotID, @LotNumber
WHILE @@fetch_status = 0
BEGIN
SET @ResultQueryString +=
N' MERGE dbo.[' + @LotNumber + '] AS L
USING
(
SELECT PT.ProcessedTransaction_ID,
TR.Result_ID,
TR.Result_Count,
TR.Result_Mean,
TR.Result_SD
FROM #tempRawXML TR
JOIN #Processed_Transactions PT
ON PT.Old_ID = TR.Assigned_ID
WHERE TR.Lot_ID = '+ CAST(@LotID AS NVARCHAR(20)) +'
) R
ON R.Result_ID = L.pk_id
WHEN NOT MATCHED
AND R.Result_Count > 0
AND R.Result_Mean > 0.0
AND R.Result_SD > 0.0
THEN
INSERT
(
fk_result_transaction_mapping_id,
count,
mean,
standard_deviation,
result_status
)
VALUES
(
R.ProcessedTransaction_ID,
R.Result_Count,
R.Result_Mean,
R.Result_SD,
1
); '
FETCH
NEXT
FROM Lot_Cursor
INTO @LotID, @LotNumber
END
CLOSE Lot_Cursor
DEALLOCATE Lot_Cursor
-- @Processed_Transactions temp table variable must be declared when executing dynamic sql
--EXEC sp_executesql @ResultQueryString, N'@Processed_Transactions MyTable READONLY', @Processed_Transactions=@Processed_Transactions
EXEC (@ResultQueryString)
我在这里的后续问题-这是否可以接受使用游标（请记住最多只能进行6次迭代）？此外，有没有办法避免在这种情况下使用游标？
s？您的问题和答案非常值得阅读
我想给你一个非常简单的答案，把你的需求归结为实际问题——据我所知
以下解决方案有一个小小的需求：具有标识的表必须有一列用于临时存储外部ID。如果可能，您可以使用更简单的方法：
--This table must have a column for temporary storage of the external ID
DECLARE @TableWithExistingData TABLE(ID INT IDENTITY,SomeData VARCHAR(100),ExternalID INT);
INSERT INTO @TableWithExistingData(SomeData) VALUES
('Data for ID=1'),('Data for ID=2');
--This is the existing data
SELECT * FROM @TableWithExistingData
--This is the derived table from your XML.
--You can use ROW_NUMBER() to create a running number on the fly.
--Use this as the rows temporary ID
--These new rows should be inserted in the table with existing data
--DataForOtherTable should be inserted in another table but with the newly created ID as FK
DECLARE @NewRows TABLE(ID INT,SomeNewData VARCHAR(100),DataForOtherTable VARCHAR(100));
INSERT INTO @NewRows(ID,SomeNewData,DataForOtherTable) VALUES
(1,'New value 1','More data 1'),(2,'New value 2','More data 2');
--This table will hold the newly created ID and the external ID
DECLARE @Mapping TABLE(nwID INT,extID INT);
--OUTPUT is great but can only return columns of the target table,
--hence the need to have the external ID within your table
INSERT INTO @TableWithExistingData(SomeData,ExternalID)
OUTPUT inserted.ID,inserted.ExternalID INTO @Mapping
SELECT nr.SomeNewData,nr.ID
FROM @NewRows AS nr;
--This is your other existing table, where you want to store values with the new ID as FK
DECLARE @SideTable TABLE(NewlyCreatedID INT,AndMoreDataForOtherTable VARCHAR(100));
--use the mapping table to get the ID into the table
INSERT INTO @SideTable
SELECT nwID,nr.DataForOtherTable
FROM @Mapping AS m
INNER JOIN @NewRows AS nr ON m.extID=nr.ID
--And this is the result in all tables
SELECT * FROM @NewRows
SELECT * FROM @TableWithExistingData
SELECT * FROM @SideTable;
需要考虑的一点是：如果您使用行号
，并且同一个进程在同一秒内发生，您可能会将您的外部ID与另一个进程混合…您可以使用GUID或将行号
与唯一的sessionID或任何您可以使用的东西连接起来…将输出插入到新的临时表中。您需要在输出中使用一个唯一标识符来匹配#tempRawXML中的行，然后您可以轻松地更新它们。@Pawel感谢您的建议。我希望找到一个更适合我原始问题的解决方案（如果有方法更新原始temp表的话）。如果这不起作用，那么我将研究您提出的解决方案。对于通用解决方案，一些缺少的信息：为什么有空的ID
元素？这是一个使用率很高的多用户数据库（可能有影响您新创建的ID的并发插入）？有一个ID
和一个Result
的LotResult1,2,3
和LotResults
，但是LotResults
中的数据没有嵌套级别。可能不止一个吗？这是1:n吗？LotResults
中的ID是您希望在表中使用的真实ID吗？@Shnugo感谢您的回复。为什么有空的ID
元素？XML文件中可见的所有字段都是C#对象的一部分。因此，此对象的某些方面只会在某些情况下填充，即从数据库读取/更新结果时。多用户数据库是。LotResult1,2,3
/LotResults
请忽略LotResult1,2,3
字段-它们用于测试。所有结果都将通过LotResults
字段公开。LotResults
中的ID是真实的ID吗？否这些是用于确定保存结果详细信息的LotIDs
。
-- Function to insert the top level Result Transaction
-- Required to populate OUTPUT variable in Processed_Transactions temporary table
MERGE dbo.Result_Transaction_Mapping AS RTM
USING
(
-- Extracts distinct UI assigned IDs and column information
SELECT DISTINCT Assigned_ID,
MAX(Transaction_DateTime) AS Transaction_DateTime,
MAX(QCTest_ID) as QCTest_ID,
MAX(StandardComment_ID) AS StandardComment_ID,
MAX(ReviewComment_ID) AS ReviewComment_ID,
MAX(Result_Count) AS Result_Count,
MAX(Result_Mean) AS Result_Mean,
MAX(Result_SD) AS Result_SD
FROM #tempRawXML
GROUP
BY Assigned_ID
) AS TR
-- Create 1 = 0 scenario to ensure the IDs never match up to what currently exists in the Result_Transaction_Mapping table
ON TR.Assigned_ID = RTM.pk_id
WHEN NOT MATCHED
-- Ensure at least one of the transaction result columns contain a value
-- This will also be verified on the UI
AND TR.Result_Count > 0
AND TR.Result_Mean > 0.0
AND TR.Result_SD > 0.0
THEN
INSERT
(
fk_participant_id,
fk_test_id,
result_date_time,
fk_comment_id,
fk_review_comment_id
)
VALUES
(
@INT_ParticipantID,
TR.QCTest_ID,
TR.Transaction_DateTime,
TR.StandardComment_ID,
TR.ReviewComment_ID
)
-- Following insert of a result, populate the INSERTED primary key field into the mappings table
OUTPUT TR.Assigned_ID,
INSERTED.pk_id
INTO #Processed_Transactions
(
Old_ID,
ProcessedTransaction_ID
);
-- recursively access each associated Lot table based on associated Lot ID's
DECLARE @LotNumber NVARCHAR(20), @LotID INT
-- Querystring to hold all set update calls
DECLARE @ResultQueryString NVARCHAR(MAX) = ''
DECLARE Lot_Cursor
CURSOR FAST_FORWARD
FOR
-- Select the lot numbers based on the available IDs
SELECT
DISTINCT L.pk_id AS LotID,
L.number AS LotNumber
FROM dbo.Lot L
LEFT
JOIN #tempRawXML TR
ON TR.Lot_ID = L.pk_id
WHERE L.pk_id IN (TR.Lot_ID)
OPEN Lot_Cursor
FETCH
NEXT
FROM Lot_Cursor
INTO @LotID, @LotNumber
WHILE @@fetch_status = 0
BEGIN
SET @ResultQueryString +=
N' MERGE dbo.[' + @LotNumber + '] AS L
USING
(
SELECT PT.ProcessedTransaction_ID,
TR.Result_ID,
TR.Result_Count,
TR.Result_Mean,
TR.Result_SD
FROM #tempRawXML TR
JOIN #Processed_Transactions PT
ON PT.Old_ID = TR.Assigned_ID
WHERE TR.Lot_ID = '+ CAST(@LotID AS NVARCHAR(20)) +'
) R
ON R.Result_ID = L.pk_id
WHEN NOT MATCHED
AND R.Result_Count > 0
AND R.Result_Mean > 0.0
AND R.Result_SD > 0.0
THEN
INSERT
(
fk_result_transaction_mapping_id,
count,
mean,
standard_deviation,
result_status
)
VALUES
(
R.ProcessedTransaction_ID,
R.Result_Count,
R.Result_Mean,
R.Result_SD,
1
); '
FETCH
NEXT
FROM Lot_Cursor
INTO @LotID, @LotNumber
END
CLOSE Lot_Cursor
DEALLOCATE Lot_Cursor
-- @Processed_Transactions temp table variable must be declared when executing dynamic sql
--EXEC sp_executesql @ResultQueryString, N'@Processed_Transactions MyTable READONLY', @Processed_Transactions=@Processed_Transactions
EXEC (@ResultQueryString)
--This table must have a column for temporary storage of the external ID
DECLARE @TableWithExistingData TABLE(ID INT IDENTITY,SomeData VARCHAR(100),ExternalID INT);
INSERT INTO @TableWithExistingData(SomeData) VALUES
('Data for ID=1'),('Data for ID=2');
--This is the existing data
SELECT * FROM @TableWithExistingData
--This is the derived table from your XML.
--You can use ROW_NUMBER() to create a running number on the fly.
--Use this as the rows temporary ID
--These new rows should be inserted in the table with existing data
--DataForOtherTable should be inserted in another table but with the newly created ID as FK
DECLARE @NewRows TABLE(ID INT,SomeNewData VARCHAR(100),DataForOtherTable VARCHAR(100));
INSERT INTO @NewRows(ID,SomeNewData,DataForOtherTable) VALUES
(1,'New value 1','More data 1'),(2,'New value 2','More data 2');
--This table will hold the newly created ID and the external ID
DECLARE @Mapping TABLE(nwID INT,extID INT);
--OUTPUT is great but can only return columns of the target table,
--hence the need to have the external ID within your table
INSERT INTO @TableWithExistingData(SomeData,ExternalID)
OUTPUT inserted.ID,inserted.ExternalID INTO @Mapping
SELECT nr.SomeNewData,nr.ID
FROM @NewRows AS nr;
--This is your other existing table, where you want to store values with the new ID as FK
DECLARE @SideTable TABLE(NewlyCreatedID INT,AndMoreDataForOtherTable VARCHAR(100));
--use the mapping table to get the ID into the table
INSERT INTO @SideTable
SELECT nwID,nr.DataForOtherTable
FROM @Mapping AS m
INNER JOIN @NewRows AS nr ON m.extID=nr.ID
--And this is the result in all tables
SELECT * FROM @NewRows
SELECT * FROM @TableWithExistingData
SELECT * FROM @SideTable;