timestamp and datetime

Question

i have a table with two columns first column is a (currentdate)timestamp and the other one is a (dateReturn)datetime column.i i need to get the difference between currentdat

Answer 1

If your column has the (relatively rare) timestamp type, Lasse V. Karlsen's answer is right.

If both columns have the datetime type, you can:

select  datediff(day, dateReturn, currentdate)
from    YourTable

See the datediff function.