[PostGIS] 2.1 버전에서 누락되는 함수

CREATE OR REPLACE FUNCTION geometryfromtext(text)
  RETURNS geometry AS
'$libdir/postgis-2.1', 'LWGEOM_from_text'
  LANGUAGE c IMMUTABLE STRICT
  COST 1;
ALTER FUNCTION geometryfromtext(text)
  OWNER TO postgres;

CREATE OR REPLACE FUNCTION geometryfromtext(text, integer)
  RETURNS geometry AS
'$libdir/postgis-2.1', 'LWGEOM_from_text'
  LANGUAGE c IMMUTABLE STRICT
  COST 1;
ALTER FUNCTION geometryfromtext(text, integer)
  OWNER TO postgres;

CREATE OR REPLACE FUNCTION geomfromtext(text)
  RETURNS geometry AS
'SELECT ST_GeomFromText($1)'
  LANGUAGE sql IMMUTABLE STRICT
  COST 100;
ALTER FUNCTION geomfromtext(text)
  OWNER TO postgres;

CREATE OR REPLACE FUNCTION geomfromtext(text, integer)
  RETURNS geometry AS
'SELECT ST_GeomFromText($1, $2)'
  LANGUAGE sql IMMUTABLE STRICT
  COST 100;
ALTER FUNCTION geomfromtext(text, integer)
  OWNER TO postgres;

CREATE OR REPLACE FUNCTION srid(geometry)
  RETURNS integer AS '$libdir/postgis-2.1', 'LWGEOM_get_srid'
  LANGUAGE c IMMUTABLE STRICT
  COST 1;
ALTER FUNCTION srid(geometry)
  OWNER TO postgres;