Distance function for sqlite | Dave AddeyAs part of an iPhone SDK project, I have an sqlite database with a table full of geographic locations, each stored as a latitude and longitude value in degrees. I wanted to be able to perform an SQL SELECT on this table and ORDER BY each row’s distance from an arbitrary point. I’ve achieved this by defining a custom sqlite function. This article contains the code for the function, together with in
http://www.idocsq.net/page/544
