Looping Through XML Fields

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Looping Through XML Fields

jeganbenitto.francis

SSC Eights!

Points: 956
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December 16, 2013 at 6:06 pm

#144832

Hi All,
I want to extract the expected value from XMLField
<CountCheck>
<CT U="346" E="123" />
<CT U="345" E="123" />
<CT U="456" E="123" />
</CountCheck
The above value is in XML Field
How can I get the value '456' when the input given is 123
i.e. I want to loop through E in xmlField and find the last E value and display corresponding U value
Thanks in advance.
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mister.magoo SSC-Forever Points: 47174 More actions · Answer 1

declare @xml xml = '<CountCheck>

<CT U="346" E="123" />

<CT U="345" E="123" />

<CT U="456" E="123" />

</CountCheck>'

declare @e_value int;

set @e_value = 123;

select nd.value('@U','int')

from @xml.nodes('/CountCheck/CT[@E=sql:variable("@e_value")][last()]') x(nd)

MM

select geometry::STGeomFromWKB(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

jeganbenitto.francis SSC Eights! Points: 956 More actions · Answer 2

Thanks MM!!..

This works fine... But only problem is ,xml is just a column in my table.

Can you please tel me how can a i create a function for this , so that i can write as SELECT UDF (@EValue) FROM tablename WHERE fieldName = @Paramaeter

mister.magoo SSC-Forever Points: 47174 More actions · Answer 3

jeganbenitto.francis (12/16/2013)
Thanks MM!!..
This works fine... But only problem is ,xml is just a column in my table.
Can you please tel me how can a i create a function for this , so that i can write as SELECT UDF (@EValue) FROM tablename WHERE fieldName = @Paramaeter

Whether it is a column or a variable, the idea is the same, you just need to reference the column instead of the variable.

I don't know what you are trying to achieve really, where did @Parameter come from and what is "fieldname"?

This could be one way to create a function for this, but I am not sure what you are trying to do, so this may not be suitable.

create function DoXmlGrab(@xml xml,@e_value int)

returns table

with schemabinding

as

return select nd.value('@U','int') as result

from @xml.nodes('/CountCheck/CT[@E=sql:variable("@e_value")][last()]') x(nd)

Then use it like this:

declare @e_value int;

set @e_value = 123;

select result

from myTable

cross apply DoXmlGrab(xmlColumn,@e_value)

MM

select geometry::STGeomFromWKB(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