i saved all my dates in MM/dd/yyyy in ms-access database. in front end i show in dd/MM/yyyy format.

For my update query i am taking date from different windows froms which is like
#13/07/2009# but at database level it will it is #13/07/2009 1:12:09 AM#

so it compare date as well as time . but i don’t want compare my date with time also…

so what i do ?

it is for Ms-acess…

declare @a datetime
set @a = getdate()

select
@a [full],
dateadd(minute, datediff(minute, ”, @a), ”) [minute],
dateadd(day, datediff(day, ”, @a), ”) [day],
dateadd(month, datediff(month, ”, @a), ”) [month],
dateadd(year, datediff(year, ”, @a), ”) [year]

Can anyone come up with a set based way to remove the DATE and keep only the TIME that will work with SQL 2005?

Thanks for the excellent tip! However, I did a little bit of performance testing myself and found the cast to FLOAT is just ever so slightly faster — most of the time

Using the DATEDIFF operation over about 2,000,000 rows took 00:00:12.626. Using the FLOAT operation is 00:00:12.601. This was an average of 10 times.

In some circumstances your operation was faster.

One other thing to note is I am using a 64-bit SKU – some operations (like float arithmetic) can be faster on x64.

Here was the basic test script:

CREATE TABLE ##Test
(
Foo DATETIME
)

GO

DECLARE @tracker INT
SET @tracker = 0

WHILE(@tracker < 2000000)
BEGIN
INSERT INTO ##Test SELECT GETDATE()
SET @tracker = @tracker + 1
END

GO

SELECT DATEADD(DAY, 1, DATEDIFF(DAY, 0, Foo)) FROM ##Test
SELECT CAST(FLOOR(CAST(Foo AS FLOAT)) AS DATETIME) FROM ##Test

DROP TABLE ##Test

SELECT DATEADD(DAY, 0, DATEDIFF(DAY, 0, CURRENT_TIMESTAMP));

Of course if you are assigning the value to a column or a DATETIME/SMALLDATETIME variable, you can avoid one operation:

DECLARE @d SMALLDATETIME;
SET @d = DATEDIFF(DAY, 0, CURRENT_TIMESTAMP);
SELECT @d;