INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (53021, 'ESRI', 53021, '+proj=poly +lat_0=0 +lon_0=0 +x_0=0 +y_0=0 +R=6371000 +units=m +no_defs +type=crs', 'PROJCS["Sphere_Polyconic",GEOGCS["Unknown datum based upon the Authalic Sphere (deprecated)",DATUM["Not_specified_based_on_Authalic_Sphere",SPHEROID["Sphere",6371000,0,AUTHORITY["EPSG","7035"]],AUTHORITY["EPSG","6035"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree minute second hemisphere",0.0174532925199433,AUTHORITY["EPSG","9108"]],AUTHORITY["EPSG","4035"]],PROJECTION["Polyconic"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",0],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["ESRI","53021"]]');