我提取了一些 XML
进入一个临时表如下:
declare @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)
这使我返回以下结果集:
我需要将提取的结果插入到两个表中——一个是映射表,另一个是由Lot_ID
决定的。通过 XML
发送的字段.
我需要实现的是 INSERT
到映射表中,然后提取新生成的主键字段(这是一个 IDENTITY
)和 INSERT
它与剩余的结果数据一起进入相关表格。
我认为最有效的方法是 UPDATE
现有Transaction_ID
#tempRawXML
中的列表与 OUTPUT
第一个 INSERT
手术。有什么办法可以做到这一点?到目前为止,我有以下内容 - 它在 #tempRawXML
中创建了一个新行表与相关Transaction_ID
:
INSERT
INTO dbo.Result_Transaction_Mapping
(
fk_participant_id,
fk_test_id,
result_date_time,
fk_comment_id,
fk_review_comment_id
)
OUTPUT INSERTED.pk_id
INTO #tempRawXML(Transaction_ID)
SELECT @INT_ParticipantID,
QCTest_ID,
Transaction_DateTime,
StandardComment_ID,
ReviewComment_ID
FROM #tempRawXML
有没有办法修改上面的内容,而不是插入仅包含生成的 Transaction_ID
的新行? , 它会更新 #tempRawXML
中的现有行?
最佳答案
在研究了UPDATE
原始 tempRawXML
表的方法后 - 无济于事 - 我有一个解决初始问题的组合:
使用的 XML:
declare @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>
'
1) 用于将 UI“映射”到 IDENTITY
生成的 ID 的附加临时表(感谢@Pawel 的建议让我走上正轨)。
注意:我从 UI 为 Old_ID
字段发送一个增量负值,以确保这些值永远不会与现有的 IDENTITY
匹配。
-- Hold mappings between old and processed IDs
-- Used when inserting into relevant lot tables following initial top level transaction insert
CREATE
TABLE #Processed_Transactions
(
Old_ID INT, -- ID supplied by UI (using a negative number to ensure no conflict with IDs from Result_Transaction_Mapping table)
ProcessedTransaction_ID INT -- ID generated during initial insert into Result_Transaction_Mapping table
)
2) MERGE
结合 OUTPUT
将初始事务插入并跟踪 Old_ID
/ProcessedTransaction_ID
映射临时表中的字段。
此时出现 1=0 场景以确保始终触发 INSERT
。这似乎有点不确定,但似乎被广泛使用。
Example from another question using MERGE
instead of INSERT
-- 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
);
在此之后,我现在有了一组数据集,可用于插入到相关的 Lot
表中。
#tempRawXML
表
ID 映射
与 UI 负映射和 IDENTITY
表生成的 ID
这让我陷入了另一个困境 - 使用 CURSORS
并因此冒险回到“程序方法的黑暗领域”(@Shnugo in a previous question 强烈建议不要这样做,他我想现在正在“诅咒”我的名字。
在成功执行顶级结果事务 INSERT
并使用上面的原始 XML 和生成的 ID 之后,我需要将剩余的“特定于结果”的信息插入到它们各自的表中,其中的名称尚未根据结果 LotID
确定。因此,我设置了以下程序化、基于集合的动态 SQL 组合(如果有的话)来完成此任务:
-- 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)
我的后续问题 - 这是对 CURSORS
的可接受使用吗(记住最多只能有 6 次迭代)?此外,在这种情况下有没有办法避免使用 CURSOR
?
关于sql-server - 使用在基于集合的插入期间创建的 ID 更新现有临时表,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39099685/