Let the database make as much filtering as possible. You can do this in SQL.
select * from technicians as t where (t.long- custLong)*(t.long- custLong) + (t.lat- custLat)*(t.lat- custLat) < t.max*t.max
The right side is km^2, but the left isn't take care of it.
Last updated
2 years ago.
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