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how to delete duplicate rows in db2 server

Posted on 2011-02-28
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Last Modified: 2012-05-11
i want the syntax to delete  the duplicate records of my table  in db2.
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Question by:Sam2009
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momi_sabag earned 250 total points
ID: 34997501
assuming you have some pk column, and another column you can use to choose which record you want to keep, you can do:


with a as (
  select *, row_numbe() over(partition by pk_column1,pk_column2 order by case when value_column='value to keep' then -1 else 1 end asc) rown
 from your_table
)
delete from a where rown > 1
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Author Comment

by:Sam2009
ID: 35043783
hello,

it worked!

thanks
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