INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (6643, 'EPSG', 6643, '+vunits=m +no_defs +type=crs', 'VERT_CS["ASVD02 height",VERT_DATUM["American Samoa Vertical Datum of 2002",2005,AUTHORITY["EPSG","1125"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","6643"]]');