TSQL XML Parsing and creating xml - sql

Question

I have a tool which I now will be creating reports for using the data I have. I am currently working on a year to date report and need to pull the numbers for that.
My goal is to have an XML output of each of the months in the current year with their totals.
Here is what the XML currently looks like with my select statement:
<root>
<data>
<classXML>
<courses>
<class>
<classTitle>Arts and Crafts</classTitle>
<tuitionCost>100</tuitionCost>
<bookCost>30</bookCost>
<classTotal>130</classTotal>
</class>
<class>
<classTitle>Paper 101</classTitle>
<tuitionCost>320</tuitionCost>
<bookCost>211</bookCost>
<classTotal>531</classTotal>
</class>
<class>
<classTitle>Introduction to Pencils</classTitle>
<tuitionCost>210</tuitionCost>
<bookCost>291</bookCost>
<classTotal>501</classTotal>
</class>
<class>
<classTitle>Intermediate Folding</classTitle>
<tuitionCost>110</tuitionCost>
<bookCost>22</bookCost>
<classTotal>132</classTotal>
</class>
<class>
<classTitle>Advanced Jumprope</classTitle>
<tuitionCost>11</tuitionCost>
<bookCost>22</bookCost>
<classTotal>33</classTotal>
</class>
<grandTotal>1327</grandTotal>
</courses>
</classXML>
<reimbursementDate>08/01/2014</reimbursementDate>
</data>
<data>
<classXML>
<courses>
<class>
<classTitle>dsfgfdsg</classTitle>
<tuitionCost>44</tuitionCost>
<bookCost>44</bookCost>
<classTotal>88</classTotal>
</class>
<grandTotal>88</grandTotal>
</courses>
</classXML>
<reimbursementDate>05/31/2014</reimbursementDate>
</data>
</root>
And my stored procedure:
SELECT
A.[classXML],
CONVERT(VARCHAR(10), A.[reimbursementDate], 101) as reimbursementDate
FROM
tuitionSubmissions as A
WHERE
A.[status] = 'Approved'
AND YEAR(A.[reimbursementDate]) = YEAR(GETDATE())
FOR XML PATH ('data'), TYPE, ELEMENTS, ROOT ('root');
As you can see, the column classXML stores that data in XML format with all of the classes they are enrolled in with their costs.
So I need to loop over the XML and create an output that is just numbers to assist with my reporting.
Here is my desired outcome:
<results>
<dataSet>
<month>8</month>
<year>2014</year>
<tuitionTotal>500</tuitionTotal>
<booksTotal>200</booksTotal>
<grandTotal>700</grandTotal>
</dataSet>
<dataSet>
<month>9</month>
<year>2014</year>
<tuitionTotal>100</tuitionTotal>
<booksTotal>500</booksTotal>
<grandTotal>600</grandTotal>
</dataSet>
</results>

Answer 1

You can use sum Function (XQuery) to do the aggregation against your XML column.
I put the query against the XML in a cross apply so you don't have to do the same XQuery twice just to calculate grandTotal.
You should also change your predicate against reimbursementDate so it may use and index to find the rows.
select datepart(month, T.reimbursementDate) as month,
datepart(year, T.reimbursementDate) as year,
S.tuitionTotal,
S.booksTotal,
S.tuitionTotal + S.booksTotal as grandTotal
from dbo.tuitionSubmissions as T
cross apply (
select T.classXML.value('sum(/courses/class/tuitionCost/text())', 'int') as tuitionTotal,
T.classXML.value('sum(/courses/class/bookCost/text())', 'int') as booksTotal
) as S
where T.status = 'Approved' and
T.reimbursementDate >= '20140101' and
T.reimbursementDate < '20150101'
for xml path('dataSet'), root('results'), type
SQL Fiddle

Answer 2

DECLARE #DocH INT
DECLARE #DOC XML = '
<root>
<data>
<classXML>
<courses>
<class>
<classTitle>Arts and Crafts</classTitle>
<tuitionCost>100</tuitionCost>
<bookCost>30</bookCost>
<classTotal>130</classTotal>
</class>
<class>
<classTitle>Paper 101</classTitle>
<tuitionCost>320</tuitionCost>
<bookCost>211</bookCost>
<classTotal>531</classTotal>
</class>
<class>
<classTitle>Introduction to Pencils</classTitle>
<tuitionCost>210</tuitionCost>
<bookCost>291</bookCost>
<classTotal>501</classTotal>
</class>
<class>
<classTitle>Intermediate Folding</classTitle>
<tuitionCost>110</tuitionCost>
<bookCost>22</bookCost>
<classTotal>132</classTotal>
</class>
<class>
<classTitle>Advanced Jumprope</classTitle>
<tuitionCost>11</tuitionCost>
<bookCost>22</bookCost>
<classTotal>33</classTotal>
</class>
<grandTotal>1327</grandTotal>
</courses>
</classXML>
<reimbursementDate>08/01/2014</reimbursementDate>
</data>
<data>
<classXML>
<courses>
<class>
<classTitle>dsfgfdsg</classTitle>
<tuitionCost>44</tuitionCost>
<bookCost>44</bookCost>
<classTotal>88</classTotal>
</class>
<grandTotal>88</grandTotal>
</courses>
</classXML>
<reimbursementDate>05/31/2014</reimbursementDate>
</data>
</root>'
EXEC sp_xml_preparedocument #DocH OUTPUT, #DOC
SELECT
MONTH(reimbursementDate) AS month
, YEAR(reimbursementDate) AS year
, SUM(tuitionCost) AS tuitionTotal, SUM(bookCost) AS bookTotal, SUM(tuitionCost+bookCost) AS grandTotal
FROM OPENXML(#DocH,'/root/data/classXML/courses/class') WITH (
classTitle varchar(40) 'classTitle'
, tuitionCost INT 'tuitionCost'
, bookCost INT 'bookCost'
, reimbursementDate date '../../../reimbursementDate'
)
GROUP BY MONTH(reimbursementDate)
, YEAR(reimbursementDate)
FOR XML PATH ('dataset')
EXEC sp_xml_removedocument #DocH;