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toshiaki-h/calc_distance.sql

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Last active December 17, 2015 07:39
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calc_distance.sql
DROP FUNCTION calc_distance;
CREATE FUNCTION calc_distance(lat1 DOUBLE, lon1 DOUBLE, lat2 DOUBLE, lon2 DOUBLE) RETURNS double
RETURN (ACOS(SIN(lat1 * PI() / 180) * SIN(lat2 * PI() / 180) + COS(lat1 * PI() / 180) * COS(lat2 * PI() / 180) * COS((lon1 - lon2) * PI() / 180)) * 180 / PI()) * 111189.57696;
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remove delimiter.

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