SRID、SRID...

SRIDはシステムビュー sys.spatiral_reference_systems に入っています。

select count(spatial_reference_id)'srid count' from sys.spatial_reference_systems;
select MIN(spatial_reference_id)'min srid' from sys.spatial_reference_systems;
select MAX(spatial_reference_id)'max srid' from sys.spatial_reference_systems;

srid count
-----------
389

min srid
-----------
4120

max srid
-----------
4999

足りねえよ。ていうか投影座標自体ねえよ。Googleメルカトルとかボンヌ図法とかそんなレベルじゃねえ、もっと恐ろしいものの片鱗を(ry
念のため東京測地系とWGS84のWKTをみてみる。

select spatial_reference_id 'srid', well_known_text from sys.spatial_reference_systems where spatial_reference_id in (4301, 4326);

srid well_known_text
---- -------------------------------------------------------------------------------------------------------------------------------------------------------------
4301 GEOGCS["Tokyo", DATUM["Tokyo", ELLIPSOID["Bessel 1841", 6377397.155, 299.1528128]], PRIMEM["Greenwich", 0], UNIT["Degree", 0.0174532925199433]]
4326 GEOGCS["WGS 84", DATUM["World Geodetic System 1984", ELLIPSOID["WGS 84", 6378137, 298.257223563]], PRIMEM["Greenwich", 0], UNIT["Degree", 0.0174532925199433]]