mysql - Use id made from latitude and longitude -

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is possible use in database id (primary key) made localization (latitude , longitude) ? formula :

public long getkeyvalue() {     return long.valueof((intlatitude + 90 * 1000) + "" + (intlongitude + 180 * 1000)); }

intlatitude , intlongitude both multiplied 1000 , rounded. respectively add 90 , 180 remap origin in order handle negative coordinates.

with given approach going have problems because of ambiguity. example 123 latitude 1 longitude 23 or latitude 12 longitude 3. should pad zeros or use separator.

why bother mapping 2 single value? database systems permit compound primary keys can use pair (lat, lon) directly key.


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