INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values (7968, 'EPSG', 7968, '+vunits=m +no_defs +type=crs', 'VERT_CS["NGVD29 height (m)",VERT_DATUM["National Geodetic Vertical Datum 1929",2005,AUTHORITY["EPSG","5102"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","7968"]]');