Google maps API maximal coordinate length?

Question

This may sound weird, but i need to know what the maximum amount of digits in a coordinate in the Google maps API is.

Say for an example, i use their "Web Services" API to find an address, then what is the longest possible lat/lng number? like xxx.xxxxx...

I see them referring to a 10 digit number (not counting the dot) in their documentation for the web services api, but i don't know if that's the max?..
Personally i haven't seen anything more than 7 digits after the dot returned, but i know google can at least search for a seemingly endless coordinate.

If anyone knows for sure what the longest coordinate you can expect returned is, please let me know.

Answer 1

SQL-wise:

Latitude/Longitude should use FLOAT/DOUBLE precision.

It's definitely not recommend to use e.g. VARCHAR(20) because numeric comparisons would fail for sure.

API-wise:

Same applies for the Maps JS API; about the various Data-APIs I'm not sure (and have no time to test that)

(probably just precision-reduction/proximity...)

PHP Manual - Floating point numbers:

The size of a float is platform-dependent, although a maximum of ~1.8e308 with a precision of roughly 14 decimal digits is a common value (the 64 bit IEEE format).

update just being down-voted (5 years later) without a reason (most likely by someone, who failed to comprehend)... while newer versions of mySQL even feature a Point datatype, in order to represent coordinates... still API wise, the data is always posted as String.