Multi Parent-Child Insertion - sql

Question

I'm trying to write a stored procedure to pull information from an XML string and use it to create multiple parent-child relationships. I am trying to push this XML into actual database tables. Basically, the local client will send an XML file to the database and store it as a string. I then need to pull the information out of that string and update the appropriate tables. If this was just a Table-A to Table-B, this wouldn't be so difficult. The problem I'm running into is it need to go from Table-A to Table-B to Table-C to Table-D where applicable. Below is a sample XML:
<RunRecordFile>
<Competition>
<Name>Daily</Name>
<StartDate>11/9/2015 12:40:07 AM</StartDate>
<Runs>
<Id>123</Id>
<Name>Daily Run</Name>
<RunDate>11/9/2015 12:40:07 AM</RunDate>
<CompetitionId>1</CompetitionId>
<RunRecords>
<Id>001</Id>
<Number>007</Number>
<ElapsedTime>23.007</ElapsedTime>
<RunId>123</RunId>
</RunRecords>
</Runs>
<Runs>
<Id>456</Id>
<Name>Daily Run</Name>
<RunDate>11/9/2015 12:47:07 AM</RunDate>
<CompetitionId>1</CompetitionId>
<RunRecords>
<Id>002</Id>
<Number>700</Number>
<ElapsedTime>23.707</ElapsedTime>
<RunId>456</RunId>
<RunRecordSpecialty>
<Id>1</Id>
<Handicap>17</Handicap>
<TeamPoints>50000</TeamPoints>
<RunRecordId>002</RunRecordId>
</RunRecordSpecialty>
</RunRecords>
</Runs>
</Competition>
</RunRecordFile>
I've attempted to use a DECLARED table to hold each of the created Primary Keys and to use SQL OUTPUT in order to gather those. When I run my SQL I'm getting (0) Rows Updated. Here's what I've tried in SQL:
CREATE PROC [dbo].[RaceFilePush]
AS
DECLARE #CompetitionIdMapping TABLE ( CompetitionId bigint )
DECLARE #RunIdMapping TABLE ( RunId bigint )
DECLARE #RunRecordIdMapping TABLE ( RunRecordId bigint )
BEGIN
DECLARE #rrXML AS XML
DECLARE #rrfId AS BIGINT
SET #rrfId = (SELECT TOP 1 Id FROM RunRecordFile WHERE Submitted IS NULL)
SET #rrXML = (SELECT TOP 1 RaceFile FROM RunRecordFile WHERE Id = #rrfId)
BEGIN TRAN Competitions
BEGIN TRY
INSERT INTO Competition (
Name
,StartDate
)
OUTPUT INSERTED.Id INTO #CompetitionIdMapping(CompetitionId)
SELECT
xCompetition.value('(Name)[1]', 'varchar(225)') AS Name
,xCompetition.value('(StartDate)[1]', 'datetime') AS StartDate
,#rrfId AS RunRecordFileId
FROM
#rrXML.nodes('/RunRecordFile/Competition') AS E(xCompetition)
INSERT INTO Run (
Name
,RunDate
,CompetitionId
)
OUTPUT INSERTED.Id INTO #RunIdMapping(RunId)
SELECT
xRuns.value('(Name)[1]','varchar(80)') AS Name
,xRuns.value('(RunDate)[1]','datetime') AS RunDate
,(SELECT CompetitionId FROM #CompetitionIdMapping)
FROM
#rrXML.nodes('/RunRecordFile/Competition/Runs') AS E(xRuns)
INSERT INTO RunRecord (
Number
,ElapsedTime
,RunId
)
OUTPUT INSERTED.Id INTO #RunRecordIdMapping(RunRecordId)
SELECT
xRunRecords.value('(Number)[1]','varchar(10)') AS Number
,xRunRecords.value('(ElapsedTime)[1]','numeric(10,5)') AS ElapsedTime
,(SELECT RunId FROM #RunIdMapping)
FROM
#rrXML.nodes('/RunRecordFile/Competition/Runs/RunRecords') AS E(xRunRecords)
INSERT INTO RunRecordSpecialty (
Handicap
,TeamPoints
,RunRecordId
)
SELECT
xRunRecordSpecialty.value('(Handicap)[1]','numeric(10,5)') AS Handicap
,xRunRecordSpecialty.value('(TeamPoints)[1]','numeric(10,5)') AS TeamPoints
,(SELECT RunRecordId FROM #RunRecordIdMapping)
FROM
#rrXML.nodes('/RunRecordFile/Competition/Runs/RunRecordSpecialty') AS E(xRunRecordSpecialty)
UPDATE RunRecordFile SET Submitted = GETDATE() WHERE Id = #rrfId
COMMIT TRAN Competitions
END TRY
BEGIN CATCH
ROLLBACK TRAN Competitions
END CATCH
END

Answer 1

With this SQL you get the whole thing into a flat declared table #tbl:
Remark: I placed the XML from your question into a variable called #xml. Adapt this to your needs...
DECLARE #tbl TABLE (
[Competition_Name] [varchar](max) NULL,
[Competition_StartDate] [datetime] NULL,
[Run_Id] [int] NULL,
[Run_Name] [varchar](max) NULL,
[Run_RunDate] [datetime] NULL,
[Run_CompetitionId] [int] NULL,
[RunRecords_Id] [int] NULL,
[RunRecords_Number] [int] NULL,
[RunRecords_ElapsedTime] [float] NULL,
[RunRecords_RunId] [int] NULL,
[RunRecordSpecialty_Id] [int] NULL,
[RunRecordSpecialty_Handicap] [int] NULL,
[RunRecordSpecialty_TeamPoints] [int] NULL,
[RunRecordSpecialty_RunRecordId] [int] NULL
);
INSERT INTO #tbl
SELECT Competition.value('Name[1]','varchar(max)') AS Competition_Name
,Competition.value('StartDate[1]','datetime') AS Competition_StartDate
,Run.value('Id[1]','int') AS Run_Id
,Run.value('Name[1]','varchar(max)') AS Run_Name
,Run.value('RunDate[1]','datetime') AS Run_RunDate
,Run.value('CompetitionId[1]','int') AS Run_CompetitionId
,RunRecords.value('Id[1]','int') AS RunRecords_Id
,RunRecords.value('Number[1]','int') AS RunRecords_Number
,RunRecords.value('ElapsedTime[1]','float') AS RunRecords_ElapsedTime
,RunRecords.value('RunId[1]','int') AS RunRecords_RunId
,RunRecordSpecialty.value('Id[1]','int') AS RunRecordSpecialty_Id
,RunRecordSpecialty.value('Handicap[1]','int') AS RunRecordSpecialty_Handicap
,RunRecordSpecialty.value('TeamPoints[1]','int') AS RunRecordSpecialty_TeamPoints
,RunRecordSpecialty.value('RunRecordId[1]','int') AS RunRecordSpecialty_RunRecordId
FROM #xml.nodes('/RunRecordFile/Competition') AS A(Competition)
OUTER APPLY Competition.nodes('Runs') AS B(Run)
OUTER APPLY Run.nodes('RunRecords') AS C(RunRecords)
OUTER APPLY RunRecords.nodes('RunRecordSpecialty') AS D(RunRecordSpecialty)
;
SELECT * FROM #tbl
If you need generated IDs, you just add the columns to #tbl and write them there, either "on the flow" or afterwards wiht UPDATE statement.
It should be easy to work through this flat table, select just the needed data level with DISTINCT and insert the rows, then the next level and so on...
Good luck!