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Editorial Team
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Asked: 2026-05-22T12:54:24+00:00

I am storing my Lat and Long values in the GEOMETRY type within MySql.

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I am storing my Lat and Long values in the GEOMETRY type within MySql. Unfortunately it seems to be rounding to 4 decimal places, which according to this Wikipedia Article isn’t very accurate. I want to use the Geospatial functions in mySql, but it seems to be lacking the precision I need. Any ideas what I can do? Can I increase the precision, or am I forced to store it as a double/float instead? If I want to use any of the other functionality in the GIS portion of mySql, will these values also be rounded (even if I store in seperate fields as another datatype)?

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1 Answer

  1. Editorial Team

    According to Alexey Botchkov:

    …we use DOUBLE to store spatial coordinates which means 15 digit precision.

    Source: http://bugs.mysql.com/bug.php?id=34075 (at the bottom).

    So GEOMETRY types are already stored as doubles, no need to do that yourself.

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