オレオレDATUM、オレオレ投影
システムビューのWKT書き換えてみるかー。
insert into sys.spatial_reference_systems (spatial_reference_id, authority_name, authorized_spatial_reference_id, well_known_text) values (101101, 'EPSG', 101101, 'GEOGCS["Tokyo", DATUM["Tokyo", ELLIPSOID["Bessel 1841", 6377397.155, 299.1528128]], PRIMEM["Greenwich", 0], UNIT["Degree", 0.0174532925199433]]');
結果の予想はついてるが、
VPCMCE(sa): Msg 259, Level 16, State 1, Line 1 Ad hoc updates to system catalogs are not allowed.
あえなく玉砕。