SQL Server XML Filter - sql-server

Question

I have a XML Data like:
<EmployeeDetails>
<BusinessEntityID>3</BusinessEntityID>
<NationalIDNumber>509647174</NationalIDNumber>
<JobTitle>Engineering Manager</JobTitle>
<BirthDate>1974-11-12</BirthDate>
<MaritalStatus>M</MaritalStatus>
<Gender>M</Gender>
<StoreDetail>
<Store>
<AnnualSales>800000</AnnualSales>
<AnnualRevenue>80000</AnnualRevenue>
<BankName>Guardian Bank</BankName>
<BusinessType>BM</BusinessType>
<YearOpened>1987</YearOpened>
<Specialty>Touring</Specialty>
<SquareFeet>21000</SquareFeet>
</Store>
<Store>
<AnnualSales>300000</AnnualSales>
<AnnualRevenue>30000</AnnualRevenue>
<BankName>International Bank</BankName>
<BusinessType>BM</BusinessType>
<YearOpened>1982</YearOpened>
<Specialty>Road</Specialty>
<SquareFeet>9000</SquareFeet>
</Store>
</StoreDetail>
</EmployeeDetails>
as an example I want to filter as follows 'SquareFeet>10000' and the result I want to get
<EmployeeDetails>
<BusinessEntityID>3</BusinessEntityID>
<NationalIDNumber>509647174</NationalIDNumber>
<JobTitle>Engineering Manager</JobTitle>
<BirthDate>1974-11-12</BirthDate>
<MaritalStatus>M</MaritalStatus>
<Gender>M</Gender>
<StoreDetail>
<Store>
<AnnualSales>800000</AnnualSales>
<AnnualRevenue>80000</AnnualRevenue>
<BankName>Guardian Bank</BankName>
<BusinessType>BM</BusinessType>
<YearOpened>1987</YearOpened>
<Specialty>Touring</Specialty>
<SquareFeet>21000</SquareFeet>
</Store>
</StoreDetail>
</EmployeeDetails>
can I do this with SQL server? The result I want to get is still an XML data.

Answer 1

SQL Server XQuery and its FLWOR expression allow to achieve what you need with ease.
T-SQL
DECLARE #xml XML =
N'<EmployeeDetails>
<BusinessEntityID>3</BusinessEntityID>
<NationalIDNumber>509647174</NationalIDNumber>
<JobTitle>Engineering Manager</JobTitle>
<BirthDate>1974-11-12</BirthDate>
<MaritalStatus>M</MaritalStatus>
<Gender>M</Gender>
<StoreDetail>
<Store>
<AnnualSales>800000</AnnualSales>
<AnnualRevenue>80000</AnnualRevenue>
<BankName>Guardian Bank</BankName>
<BusinessType>BM</BusinessType>
<YearOpened>1987</YearOpened>
<Specialty>Touring</Specialty>
<SquareFeet>21000</SquareFeet>
</Store>
<Store>
<AnnualSales>300000</AnnualSales>
<AnnualRevenue>30000</AnnualRevenue>
<BankName>International Bank</BankName>
<BusinessType>BM</BusinessType>
<YearOpened>1982</YearOpened>
<Specialty>Road</Specialty>
<SquareFeet>9000</SquareFeet>
</Store>
</StoreDetail>
</EmployeeDetails>';
SELECT #xml.query('<EmployeeDetails>
{
for $x in /EmployeeDetails/*
return if (local-name($x) ne "StoreDetail") then $x
else
<StoreDetail>
{
for $y in $x/Store
where $y/SquareFeet/text() > 10000
return $y
}
</StoreDetail>
}
</EmployeeDetails>');
Output
<EmployeeDetails>
<BusinessEntityID>3</BusinessEntityID>
<NationalIDNumber>509647174</NationalIDNumber>
<JobTitle>Engineering Manager</JobTitle>
<BirthDate>1974-11-12</BirthDate>
<MaritalStatus>M</MaritalStatus>
<Gender>M</Gender>
<StoreDetail>
<Store>
<AnnualSales>800000</AnnualSales>
<AnnualRevenue>80000</AnnualRevenue>
<BankName>Guardian Bank</BankName>
<BusinessType>BM</BusinessType>
<YearOpened>1987</YearOpened>
<Specialty>Touring</Specialty>
<SquareFeet>21000</SquareFeet>
</Store>
</StoreDetail>
</EmployeeDetails>

Answer 2

This can be done as follows
select * into #tmp from YourTable
update #tmp
set xmldata.modify('
delete (/EmployeeDetails/StoreDetail/Store[SquareFeet <= 10000])[1]
')
select * from #tmp
drop table #tmp