ST_Perimeter2D — Returns the 2D perimeter of a polygonal geometry. Alias
for ST_Perimeter.
Synopsis
float +`*`+ST_Perimeter2D*(`geometry `geomA`)`;
Description
Returns the 2-dimensional perimeter of a polygonal geometry.
This is currently an alias for ST_Perimeter. In future versions
ST_Perimeter may return the highest dimension perimeter for a geometry.
This is still under consideration