Others will have to correct me if I'm wrong, but I don't believe that you can use
<=
or
>=
operators with uniqueidentifiers.
Your best bet is the equality operator:
SELECT * FROM Table1 WHERE Id = 'A8912F3C-81BE-4076-B6AB-0000017330AD'
If you want to query a range of uniqueidentifiers you could use a
where.. in
clause:
SELECT * FROM Table1 WHERE Id IN ('A8912F3C-81BE-4076-B6AB-0000017330AD', 'B8912F3C-81BE-4076-B6AB-0000017330AD', 'C8912F3C-81BE-4076-B6AB-0000017330AD')