SQL Server GROUP BY datetime ignore hour minute and a select with a date and sum value

Question

I have a table with two fields - datetime and int. I want to do a group by on the datetime only on the date ignoring the hour and minute.

Answer 1

SELECT CAST(Datetimefield AS DATE) as DateField, SUM(intfield) as SumField
FROM MyTable
GROUP BY CAST(Datetimefield AS DATE)