Re: Deleting duplicates from table

[Vern Hamberg <vhamberg@xxxxxxxxxxxxxxx>]

Allow me to expand on Darren's post - when he says "...an example from 
DB2..." I believe he means Db2 for Linux/Unix/Windows - Vinay, the link 
that you give has 11.5 in it - that is the version for the LUW version 
of Db2 - it is not for IBM i.

The different versions or flavors of Db2 are very similar - IBM has a 
website comparing them. Still, there are differences - here is a page 
with links to resources - 
https://www.ibm.com/support/pages/sql-reference-cross-platform-development-version-7

Regards
Vern

On 11/6/2024 7:21 AM, Darren Strong wrote:
> I don't think you can delete from a virtual table like that.  You're looking at an example from DB2, but are probably running this on an IBM I, so its DB2 for I, which is different and maddeningly difficult to Google.  Thanks IBM.
>
>
> -----Original Message-----
> From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Vinay Gavankar
> Sent: Tuesday, November 5, 2024 10:33 AM
> To: Midrange Systems Technical Discussion <midrange-l@lists.midrangecom>
> Subject: Deleting duplicates from table
>
> CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
>
>
> Hi,
>
> I am trying to delete duplicate from a table, using following sql (based on example from https://www.ibm.com/docs/en/db2/11.5?topic=statements-delete )
>
> delete from
>     (select rownumber() over (partition by flda, fldb, fldc
>                                               order by fldd desc, flde desc) from myfile) as a(rn)
>                                               where rn > 1
>
> I get an error over the first '(' before select:
> Token ( was not valid. Valid tokens: <IDENTIFIER>.
>
> What am I doing wrong?
>
> TIA
> Vinay
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