http://www2.sqlblog.com/blogs/adam_machanic/archive/tags/Performance/datetime/default.aspxTags: Performance, datetimeenCommunityServer 2.1 SP2 (Build: 61129.1)http://www2.sqlblog.com/blogs/adam_machanic/archive/2009/12/08/t-sql-tuesday-001-exploring-fuzzy-interval-islands-using-sqlclr.aspxTue, 08 Dec 2009 19:13:00 GMT21093a07-8b3d-42db-8cbf-3350fcbf5496:19621Adam Machanic2http://www2.sqlblog.com/blogs/adam_machanic/comments/19621.aspxhttp://www2.sqlblog.com/blogs/adam_machanic/commentrss.aspx?PostID=19621When working with time intervals, we often want to ask a couple of basic questions: Which time periods are not covered by our intervals? These are known as "gaps". What are the time ranges that we are fully covering? These are known as "islands". If you're...(<a href="http://www2.sqlblog.com/blogs/adam_machanic/archive/2009/12/08/t-sql-tuesday-001-exploring-fuzzy-interval-islands-using-sqlclr.aspx">read more</a>)<img src="http://www2.sqlblog.com/aggbug.aspx?PostID=19621" width="1" height="1">PerformanceSQLCLRdatetimedateT-SQL Tuesdaytimegapsislandshttp://www2.sqlblog.com/blogs/adam_machanic/archive/2009/10/20/what-happened-today-date-and-date-ranges-over-datetime.aspxTue, 20 Oct 2009 18:21:00 GMT21093a07-8b3d-42db-8cbf-3350fcbf5496:18023Adam Machanic14http://www2.sqlblog.com/blogs/adam_machanic/comments/18023.aspxhttp://www2.sqlblog.com/blogs/adam_machanic/commentrss.aspx?PostID=18023A few days ago Aaron posted yet another fantastic entry in his Bad Habits series, this one discussing mishandling of date ranges in queries . This is a topic near and dear to me, having had to clean up a lot of poorly thought out code in the past few...(<a href="http://www2.sqlblog.com/blogs/adam_machanic/archive/2009/10/20/what-happened-today-date-and-date-ranges-over-datetime.aspx">read more</a>)<img src="http://www2.sqlblog.com/aggbug.aspx?PostID=18023" width="1" height="1">PerformanceT-SQLOptimizationdatetimedate