Take the time from the datetime and convert it into seconds?

Question

I am running SQL Server 2005. Technically I know how to take the time from a tsql datetime.

CONVERT(VARCHAR(8),GETDATE(),108) AS HourMinuteSecond

Answer 1

Use DATEPART:

(DATEPART(HOUR, GETDATE()) * 3600) +
(DATEPART(MINUTE, GETDATE()) * 60) +
(DATEPART(SECOND, GETDATE()))

Answer 2

Just my 2 cents ...another way of doing this

Edit: Added method for SQL Server 2005 (Thank you Michael)

for SQL Server 2008

SELECT DATEDIFF(SECOND, CONVERT(date, GETDATE()), GETDATE())

for sql server 2005+

SELECT DATEDIFF(SECOND, DATEADD(dd, 0, DATEDIFF(dd, 0, GETDATE())), GETDATE())

Answer 3

The functions you want is DatePart

Declare @d DateTime
Select @d = GetDate()
Select (DatePart(HOUR, @d) * 3600) + (DatePart(MINUTE, @d) * 60) + DatePart(SECOND, @d)