INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (4990, 'EPSG', 4990, '+proj=geocent +ellps=krass +units=m +no_defs +type=crs', 'GEOCCS["Lao 1993",DATUM["Lao_1993",SPHEROID["Krassowsky 1940",6378245,298.3,AUTHORITY["EPSG","7024"]],AUTHORITY["EPSG","6677"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Geocentric X",OTHER],AXIS["Geocentric Y",OTHER],AXIS["Geocentric Z",NORTH],AUTHORITY["EPSG","4990"]]');