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Re: Filtering on parts of a date/time field

Posted by Roy Harvey on 01/03/07 18:48

Look at the datepart function:

SELECT DATEPART(year,getdate()),
DATEPART(quarter,getdate()),
DATEPART(month,getdate()),
DATEPART(week,getdate()),
DATEPART(weekday,getdate()),
DATEPART(day,getdate()),
DATEPART(dayofyear,getdate()),
DATEPART(hour,getdate()),
DATEPART(minute,getdate()),
DATEPART(second,getdate()),
DATEPART(millisecond,getdate())

It is also worth becoming familiar with DATEADD() and DATENAME().

Roy Harvey
Beacon Falls, CT

On 3 Jan 2007 10:02:48 -0800, "matturbanowski"
<sales@matturbanowski.co.uk> wrote:

>Hi,
>I have a date/time field in a SQL2000 database, and what I would like
>to do is to filter on a specific part of the field, for example the
>time or hour.
>
>Supposing I have a set of data for the last 5 years and would like to
>filter out any records which are outside working hours i.e. I would
>like to show records where the time is between 9am and 5pm.
>
>Does anyone know if there is a simple way to do this in SQL? If you
>simply don't specify the date part in the where clause (e.g. WHERE
>issuedatetime between '09:00:00' and '17:00:00') it defaults it to
>1900-01-01 so basically no data is returned.
>The only way I can see to do this is by using the DATEPART function,
>converting it to a varchar, appending 1900-01-01 on to it and
>converting it to a datetime, and then using the where clause as stated
>above. This is quite a long-winded way, however. Any other suggestions?
>
>Thanks,
>Matt

 

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