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Calculate the Distance Between Two Latitude/Longitude Points using Plain SQL

June 13, 2011 (Modified June 14, 2011) A question recently appeared on the comp.databases.oracle.server Usenet group that oddly made me recall a lesson from a mathematics class that I taught in the early 1990s.  A bit strange how a question related to Oracle Database would trigger such a memory, but it happened.  The question posed [...]