Using SQL to Generate XML - sql

Question

I'm trying to use SQL to generate XML in the format:
<ImportSession>
<Batches>
<Batch>
<BatchFields>
<BatchField Name="Field1" Value="1" />
<BatchField Name="Field2" Value="2" />
<BatchField Name="Field3" Value="3" />
</BatchFields>
<Batch>
<Batches>
</ImportSession>
I'm using SQL Server 2008. I wrote this query:
SELECT
(SELECT
(SELECT
'Col' AS [#Name],
FiscalYear AS [#Value]
FROM [ICEM].[dbo].[ExportedBill]
WHERE ExportedBillID = 1
FOR XML PATH ('BatchField'), TYPE)
FROM [ICEM].[dbo].[ExportedBill]
WHERE ExportedBillID = 1
FOR XML PATH ('BatchFields'), ROOT ('Batch'), TYPE)
FROM
[ICEM].[dbo].[ExportedBill]
WHERE
ExportedBillID = 1
FOR XML PATH ('Batches'), ROOT ('ImportSession')
And this results in:
<ImportSession>
<Batches>
<Batch>
<BatchFields>
<BatchField Name="Col" Value="2015" />
</BatchFields>
</Batch>
</Batches>
</ImportSession>
What I need though is every column should have an entry in BatchField. Also I need the column name to show up in the name. So I should get:
<BatchField Name="FiscalYear" Value="2015" />
<BatchField Name="MeterNumber" Value="123456" />
<BatchField Name="Name" Value="John Smith" />
<BatchField Name="Utility" Value="Electricity" />
So can anyone tell me how I modify my query to get what I need?
EDIT:
I figured it out. I needed a second nested Select. I need one for each column. If they proceeding selects use the same tags as a previous Select then the information is concatanated under the same parent tag
SELECT
(SELECT
(SELECT
'FiscalYear' AS [#Name],
FiscalYear AS [#Value]
FROM [ICEM].[dbo].[ExportedBill]
WHERE ExportedBillID = 1
FOR XML PATH ('BatchField'), TYPE),
(SELECT 'FiscalPeriod' AS [#Name],
FiscalPeriod AS [#Value]
FROM [PEEL_ICEM].[dbo].[ExportedBill]
WHERE ExportedBillID = 1
FOR XML PATH ('BatchField'), TYPE)
FROM [ICEM].[dbo].[ExportedBill]
WHERE ExportedBillID = 1
FOR XML PATH ('BatchFields'), ROOT ('Batch'), TYPE)
FROM
[ICEM].[dbo].[ExportedBill]
WHERE
ExportedBillID = 1
FOR XML PATH ('Batches'), ROOT ('ImportSession')
Thing is though, there will be around 70 columns in this table. Ill brute force it for now, but if anyone knows of a better way to do this please let me know. Cheers

Answer 1

You can create separate child elements by adding a blank column separator. e.g.
DECLARE #T TABLE
( FiscalYear INT,
MeterNumber INT,
Name VARCHAR(255),
Utility VARCHAR(255)
);
INSERT #T VALUES (2015, 123456, 'John Smith', 'Electricity');
SELECT [BatchField/#Name] = 'FiscalYear',
[BatchField/#Value] = FiscalYear,
'',
[BatchField/#Name] = 'MeterNumber',
[BatchField/#Value] = MeterNumber,
'',
[BatchField/#Name] = 'Name',
[BatchField/#Value] = Name,
'',
[BatchField/#Name] = 'Utility',
[BatchField/#Value] = Utility
FROM #T
FOR XML PATH('BatchFields'), ROOT('Batch');
Which gives:
<Batch>
<BatchFields>
<BatchField Name="FiscalYear" Value="2015" />
<BatchField Name="MeterNumber" Value="123456" />
<BatchField Name="Name" Value="John Smith" />
<BatchField Name="Utility" Value="Electricity" />
</BatchFields>
</Batch>