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update from Backup table

Posted on 2011-09-07
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Last Modified: 2012-05-12
I have 2 tables.  Table1(Id,ColA,ColB,ColC) and TableBackup(Id,ColA,ColB,ColC).
Table2 has the same columns as Table1.
I would like to update ColA and ColB in Table1 with ColA and ColB from TableBackup.  The Id is the same in both tables.
How is best to do this?
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Question by:johnkainn
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knightEknight earned 2000 total points
ID: 36498772
update Table1
set ColA = T2.ColA, ColB = T2.ColB
from Table1 T1
join Table2 T2
  on T2.Id = T1.Id
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Expert Comment

by:knightEknight
ID: 36498781
oops, use "TableBackup" instead of "Table2" in the join clause
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