[AccessD] SQL Time

Kaup, Chester Chester_Kaup at kindermorgan.com
Tue Dec 11 16:08:00 CST 2012


Tried this and got a select statement error

Select t1.* from dbo_DSS_StatusChanges t1 
inner join
(select distinct PID, INT(StatusDate), max(StatusDate) as lastdatetime 
   group by PID, INT(StatusDate))
 t2 on t2.PID = t1.PID AND t2.lastdatetime = t1.StatusDate;

I the modified the select statement and came up with this




-----Original Message-----
From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Stuart McLachlan
Sent: Tuesday, December 11, 2012 3:30 PM
To: Access Developers discussion and problem solving
Subject: Re: [AccessD] SQL Time

Something like:

 Select t1.* from mytable t1
inner join
(select distinct ParentFK, INT(rDateTime), max(rDatetime) as lasdatetime
   group by ParentFK, INT(rDateTime)) t2 on t2.ParentFK = t1.ParentFK AND t2.lastdatetime = t1.rdatetime

The inner Select should return the FK and the datetime of the last record for each day for each Parent entity.  Joining on those two fields should give you just the records you want.

--
Stuart

On 11 Dec 2012 at 20:58, Kaup, Chester wrote:

> I have a database with linked SQL server table. I need to extract some 
> records from the table. Some days there is more than one record; ie 
> two records with different times. I need to grab the last record on 
> those days. So far I have not come up with a way. Your ideas 
> appreciated. -- AccessD mailing list AccessD at databaseadvisors.com 
> http://databaseadvisors.com/mailman/listinfo/accessd Website:
> http://www.databaseadvisors.com
> 


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