ExtractValue in mysql is not working for me -


i have xml string 

set @xml='<?xml version="1.0" encoding="utf-8" standalone="yes"?> <seatest xsi:schemalocation="https://sea.retain.hawcik.com/schema    /seatestschema https://sea.retain.hawcik.com/schema/seatestschema1.0.xsd"     xmlns="https://sea.retain.hawcik.com/schema/seatestschema" xmlns:xsi="http://www.w9.org/2999/xmlschema-instaccc"> <worksourcets>     <testworksourcets>         <worksourcetsname>site01</worksourcetsname>         <sourcetsdetails>             <duringssunits>                 <duringssunit>                     <duname>test.net</duname>                     <sourcetsstatus>req</sourcetsstatus>                     <completetestastext>test.com,site01,11/10/2014</completetestastext>                     <mentionedduedate></mentionedduedate>                     <mentionedpriority>normal</mentionedpriority>                     <duspecificaddtionlyelementtes>                         <elementte>                             <elementtename>requesteddate</elementtename>                             <elementtedatatype>date</elementtedatatype>                             <elementtevalue>11/10/2014</elementtevalue>                         </elementte>                     </duspecificaddtionlyelementtes>                 </duringssunit>             </duringssunits>         </sourcetsdetails>     </testworksourcets> </worksourcets> </seatest>';  select extractvalue(@xml, '//duname');

here want value duname tag test.net. don't know why i'm getting null. please let me know if wrong in above query.


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