>>I am trying to understand the DATEDIFF() function better. Do I understand correctly that the 1st parameter "dd" really has no literal meaning? That is, you can name this parameter anything and it won't change the result?
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>The first parameter says, that we need to get difference in days.
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http://msdn.microsoft.com/en-us/library/ms189794.aspx>
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http://doc.ddart.net/mssql/sql70/da-db_6.htmI got it now. Thank you.
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