Can we use Group by Clause here?

Question

All,
Can we use group by clause in the date column?
If yes, will it work for these kind of values '11/12/2009 12:30:45 PM' and '11/12/2009 4:30:45 PM'......

Answer 1

Hi,
frontier007 wrote:
All,
Can we use group by clause in the date column?
If yes, will it work for these kind of values '11/12/2009 12:30:45 PM' and '11/12/2009 4:30:45 PM'......Yes, GROUP BY works with DATEs.
Remember that DATEs always include hours, minutes and seconds, so '11/12/2009 12:30:45 PM' and '11/12/2009 4:30:45 PM', though they are in the same calendar day, are different DATE values. If you want them to be in the same group, then use TRUNC.
For example:
SELECT    TRUNC (entry_date)      AS entry_dt
,         SUM (amount)            AS daily_amount
FROM      orders
GROUP BY  TRUNC (entry_date)
;Edited by: Frank Kulash on Oct 30, 2009 4:55 AM