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Count Decimal Places

Wade Cantley

The Decimal Splash

  • 1 1/2 oz. TY KU Liqueur
  • 1 oz. apple juice
  • Splash of sugar-free cranberry juice

I needed a way to see if a Latitude and Longitude value was long enough to be precise.  To be precise it needs to be at least 6 decimal places long so I needed to count the decimals.  

Here is what I found.

select latitude, longitude
from TableWithGeoLocations

LEN(CAST(REVERSE(SUBSTRING(STR(latitude, 13, 11), CHARINDEX('.', STR(latitude, 13, 11)) + 1, 20)) AS decimal)) <= 6
LEN(CAST(REVERSE(SUBSTRING(STR(longitude, 13, 11), CHARINDEX('.', STR(longitude, 13, 11)) + 1, 20)) AS decimal)) <= 6

This worked great to filter out the records that needed better geolocation data.