http://en.wikipedia.org/wiki/Leap_years
if year modulo 400 is 0
then is_leap_year
else if year modulo 100 is 0
then not_leap_year
else if year modulo 4 is 0
then is_leap_year
else
not_leap_year
Joe's Knowledge Base - a collection of various tips-n-tricks for SQL Server. Note: best effort to site sources where applicable, otherwise curated from BOL/MSDN or self-created.
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