RB:

Try :

SELECT ID,  LastModDate
FROM Tab a
WHERE TRUNC(LastModDate) = (Select MAX(TRUNC(LastModDate)) From  Tab b)


The explanation of the error message follows.

RWB

===============================================================================================
|-----------------------------------+----------------------------------->
|                                   |                                   |
|-----------------------------------+----------------------------------->
  >-------------------------------------------------------------------------------|
  |Error:  ORA 937                                                                |
  |                                                                               |
  |                                                                               |
  |Text:   not a single-group group function                                      |
  |                                                                               |
  |                                                                               |
  |-------------------------------------------------------------------------------|
  |                                                                               |
  |                                                                               |
  |Cause:  A SELECT list cannot include both a group function, such as AVG, COUNT,|
  |                                                                               |
  |                                                                               |
  |         MAX, MIN, SUM, STDDEV, or VARIANCE, and an individual column          |
  |                                                                               |
  |                                                                               |
  |        expression, unless the individual column expression is included in a   |
  |                                                                               |
  |                                                                               |
  |        GROUP BY clause.                                                       |
  |                                                                               |
  |                                                                               |
  |Action: Drop either the group function or the individual column expression     |
  |                                                                               |
  |                                                                               |
  |        from the SELECT list or add a GROUP BY clause that includes all        |
  |                                                                               |
  |                                                                               |
  |        individual column expressions listed.                                  |
  |                                                                               |
  |                                                                               |
  |.                                                                              |
  >-------------------------------------------------------------------------------|




============================================================================================================

Reginald W. Bailey
IBM Global Services - ETS SW GDSD - Database Management
Your Friendly Neighborhood DBA
713-216-7703 (Office) 281-798-5474 (Mobile) 713-415-5410 (Pager)
============================================================================================================


                                                                                       
                                             
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i have a query that returns 2 rows with one column being id and the other
being date-time stamp.

i want to select the row with the latest timestamp among those two
records.they have difference id values

SELECT ID,LastModDate
FROM  Tab

ID         LastModDate
--         -----------
2          1/20/2003 2:56:18 AM
1          4/23/2003 10:26:42 PM

I want to modify the above query to return the row with id=1 which has the
latest timestamp

I tried this

SELECT ID,MAX(LastModDate)
FROM  Tab

getting this error
OERR: ORA 937 not a single-group group function

how do i get this work.

Thanks

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--
Author: Basavaraja, Ravindra
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