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Advanced Update Statements

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Posted - 2001-10-30 : 08:29:32

Keith writes "I have a table where I need to weed-out (or change) redundant email addresses, modifying the records with the older time-stamp.

Here's the SELECT statement that gets me those records (but not their ids):
"select email,min(date_entered) from (
Select a.email, a.user_id, a.date_entered
from users a
where a.email in
(Select a.email
from users a
group by a.email
Having count(a.email) >1)) a
group by email
order by email"

Any suggestion on how the UPDATE statement can just modify the record with the older timestamp? I'm bumping into internal errors - when I used an INNER JOIN,though I have SP2 (http://support.microsoft.com/support/kb/articles/Q245/6/31.ASP)- or 'where exists' errors. Any suggestions?

Thanks in advance,
Keith"

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