Jeg vil foreslå at gemme hele polygonen som en geometritype. Hvis/når du skal "konvertere" det til geografi, skal du bruge geografimetoderne STNumPoints og STPointN til at udtrække de enkelte punkter i rækkefølge og konvertere dem efter behov.
Apropos konverteringen, hvilket format er dine data i nu? Jeg kan ikke se lat/lang info der, men måske mangler jeg noget.
Edit:Her er en løsning, som jeg lige har kodet.
use tempdb;
create table tally (i int not null);
with
a as (select 1 as [i] union select 0),
b as (select 1 as [i] from a as [a1] cross join a as [a2]),
c as (select 1 as [i] from b as [a1] cross join b as [a2]),
d as (select 1 as [i] from c as [a1] cross join c as [a2]),
e as (select 1 as [i] from d as [a1] cross join d as [a2])
insert into tally
select row_number() over (order by i) from e
create unique clustered index [CI_Tally] on tally (i)
create table ace (g geometry)
insert into ace (g)
values (geometry::STGeomFromText(<<your polygon string here>>, 0));
select i, g.STPointN(t.i), g.STPointN(t.i).STAsText()
from ace as [a]
cross join tally as [t]
where t.i <= g.STNumPoints()