INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (4020, 'EPSG', 4020, '+proj=longlat +ellps=helmert +no_defs +type=crs', 'GEOGCS["Unknown datum based upon the Helmert 1906 ellipsoid (deprecated)",DATUM["Not_specified_based_on_Helmert_1906_ellipsoid",SPHEROID["Helmert 1906",6378200,298.3,AUTHORITY["EPSG","7020"]],AUTHORITY["EPSG","6020"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4020"]]');