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Remove duplicates based om value of one field

Posted on 2011-10-28
Medium Priority
Last Modified: 2012-05-12

When I do the following I will get a list of Names and their Emailaddress.

Now I want to make sure that the same E-mailaddress is never more than once in the selection.
Is there a way to filter these out somehow?
Question by:Stef Merlijn
  • 2
LVL 78

Expert Comment

by:slightwv (䄆 Netminder)
ID: 37044849
Not sure I understand.  What it the email is the same but name is different.

What do you want returned?

Sample data and expected results would help.
LVL 78

Accepted Solution

slightwv (䄆 Netminder) earned 2000 total points
ID: 37044862
To just grab the first email if they repeat try this:

select name, email from
select name, email, row_number() over(partition by email order by email) as myrn
from table
where myrn=1;

Author Closing Comment

by:Stef Merlijn
ID: 37044958
This is what I intended. Thank you.

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