ST_Box2dFromGeoHash
Name
ST_Box2dFromGeoHash — Return a BOX2D from a GeoHash string.
Synopsis
    
     box2d
     
      ST_Box2dFromGeoHash
     
     (
    
    text
    
     geohash
    
    , integer
    
     precision=full_precision_of_geohash
    
    
     )
    
    ;
   
Description
Return a BOX2D from a GeoHash string.
   If no
   
    precision
   
   is specified ST_Box2dFromGeoHash returns a BOX2D based on full precision of the input GeoHash string.
  
   If
   
    precision
   
   is specified ST_Box2dFromGeoHash will use that many characters from the GeoHash to create the BOX2D. Lower precision values results in larger BOX2Ds and larger values increase the precision.
  
Availability: 2.1.0
Examples
SELECT ST_Box2dFromGeoHash('9qqj7nmxncgyy4d0dbxqz0');
                st_geomfromgeohash
--------------------------------------------------
 BOX(-115.172816 36.114646,-115.172816 36.114646)
SELECT ST_Box2dFromGeoHash('9qqj7nmxncgyy4d0dbxqz0', 0);
 st_box2dfromgeohash
----------------------
 BOX(-180 -90,180 90)
 SELECT ST_Box2dFromGeoHash('9qqj7nmxncgyy4d0dbxqz0', 10);
                            st_box2dfromgeohash
---------------------------------------------------------------------------
 BOX(-115.17282128334 36.1146408319473,-115.172810554504 36.1146461963654)