SQL Server Server query - Count distinct DateTime field

Question

Supposing we have the following records in an SQL Server table.

Date
19/5/2009 12:00:00 pm
19/5/2009 12:15:22 pm
20/5/2009 11:38:00 am

What

Answer 1

After Googling found this one too...

SELECT CAST(FLOOR(CAST(Expr1 AS FLOAT)) AS DATEtime) AS Expr1,

COUNT(*) AS Expr2

FROM MY_TABLE

GROUP BY

CAST(FLOOR(CAST(Expr1 AS FLOAT)) AS DATEtime)

The cons?

1. High speed execution
2. The results returned are in the original locale. Ex for Greek 19/5/2009

Thank you all