SQL server select distinct rows using most recent value only

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I have a table that has the following columns

  • Id
  • ForeignKeyId
  • AttributeName
  • AttributeValue
  • Created

Some of the data may look like this:

1, 1, 'EmailPreference', 'Text', 1/1/2010
2, 1, 'EmailPreference', 'Html', 1/3/2010
3, 1, 'EmailPreference', 'Text', 1/10/2010
4, 2, 'EmailPreference', 'Text', 1/2/2010
5, 2, 'EmailPreference', 'Html', 1/8/2010

I'd like to run a query that pulls the most recent value of the AttributeValue column for each distinct ForeignKeyId andAttributeName, using the Created column to determine the most recent value. Example output would be:

ForeignKeyId AttributeName    AttributeValue Created
-------------------------------------------------------
1           'EmailPreference' 'Text'         1/10/2010
2           'EmailPreference' 'Html'         1/8/2010

How can I do this using SQL Server 2005?

2 Answers
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