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Update records in same table

Posted on 2007-07-25
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I have the following records in my temporary  table which I have duplicates I am working: I would like the schoolID match.

tempid        fullname            FirstLastName            schoolid      birthdate         ssn              sourceid
35              John H Smith     John smith                  77777          01/0179      999-99-9999    JXX5
89               John Smith       John Smith                  66666          xxxxxx        xxxxxx            FFF7
 this is just an example but I have a 100 pairs in my  temp table and I am looking for a solution to automate the update.
My objective is to make the schoolid match. In here, I would like update tempID 89 to the same schoolid like tempid 35 -77777.  I would prefer sourceid FFF7 follow and match all schoolIds of sourceid JXX5.

thanks!


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Question by:zachvaldez
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by:derekkromm
ID: 19571640
What criteria are you using to consider a record as a duplicate? Just the FirstLastName column?
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by:zachvaldez
ID: 19574096
yes
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derekkromm earned 1000 total points
ID: 19578106
update      t
set      schoolid=t3.schoolid,
      sourceid=t3.sourceid
from      #tbl t
      join (select firstlastname,min(tempid) tempid from #tbl group by firstlastname) t2 on t.firstlastname=t2.firstlastname
      join (select tempid,schoolid,sourceid from #tbl) t3 on t2.tempid=t3.tempid
where      t.tempid <> t2.tempid
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