IBM Mainframe Forum Index
 
Log In
 
IBM Mainframe Forum Index Mainframe: Search IBM Mainframe Forum: FAQ Register
 

Fetch the latest record from a table thru an SQL query


IBM Mainframe Forums -> DB2
Post new topic   Reply to topic
View previous topic :: View next topic  
Author Message
maxsubrat

Active User


Joined: 27 Feb 2008
Posts: 108
Location: india

PostPosted: Tue Dec 01, 2015 7:13 pm
Reply with quote

Hi,

I want to fetch the latest record from a DB2 table based on one field PO create time stamp, thru an SQL query only.

Thanks
Subrat
Back to top
View user's profile Send private message
Nic Clouston

Global Moderator


Joined: 10 May 2007
Posts: 2455
Location: Hampshire, UK

PostPosted: Tue Dec 01, 2015 8:40 pm
Reply with quote

If it by an SQL query only why did you post a request for a sort solution in the sort forum?
Possibly:
Code:
Where TIMESTAMP = Max(Timestamp)

but you will have to do your due diligence in checking that.
Back to top
View user's profile Send private message
Rohit Umarjikar

Global Moderator


Joined: 21 Sep 2010
Posts: 2586
Location: NYC,USA

PostPosted: Tue Dec 01, 2015 9:18 pm
Reply with quote

or you can say..
Code:
Order by PO create time stamp DESC
fetch first 1 row only
Back to top
View user's profile Send private message
maxsubrat

Active User


Joined: 27 Feb 2008
Posts: 108
Location: india

PostPosted: Wed Dec 02, 2015 11:10 am
Reply with quote

Suppose my table structure is like below:

ACT-ID PO-NBR ACT-TS
12 12345 2015-12-02-10-00-00-000000
12 12345 2015-12-02-09-00-00-000000
12 12345 2015-12-02-08-00-00-000000
15 99999 2015-12-01-04-00-00-000000
15 99999 2015-12-01-09-00-00-000000
25 12345 2015-12-03-09-00-00-000000
25 88888 2015-12-01-09-01-00-000000

I want to fetch the latest ACT-TS for each PO-NBR and ACT-ID in (12,15) only.
so my output data should be:

ACT-ID PO-NBR ACT-TS
12 12345 2015-12-02-10-00-00-000000
15 99999 2015-12-01-09-00-00-000000
Back to top
View user's profile Send private message
Rohit Umarjikar

Global Moderator


Joined: 21 Sep 2010
Posts: 2586
Location: NYC,USA

PostPosted: Wed Dec 02, 2015 11:24 am
Reply with quote

Code:
Select acct-Id,po-nbr,max(act-to)
From table
Group by acc-Id,po-nbr
Order by 1,2
Back to top
View user's profile Send private message
maxsubrat

Active User


Joined: 27 Feb 2008
Posts: 108
Location: india

PostPosted: Wed Dec 02, 2015 11:35 am
Reply with quote

suppose I have this type of record structure:

ACT-ID PO-NBR ACT-TS
02 12222 2015-12-12-10-00-00-000000
02 12222 2015-12-15-10-00-00-000000
10 19222 2015-12-12-10-00-00-000000
12 12345 2015-12-02-10-00-00-000000
12 12345 2015-12-02-09-00-00-000000
12 12345 2015-12-02-08-00-00-000000
15 99999 2015-12-01-04-00-00-000000
15 99999 2015-12-01-09-00-00-000000
25 12345 2015-12-03-09-00-00-000000
25 88888 2015-12-01-09-01-00-000000
Back to top
View user's profile Send private message
Rohit Umarjikar

Global Moderator


Joined: 21 Sep 2010
Posts: 2586
Location: NYC,USA

PostPosted: Wed Dec 02, 2015 11:38 am
Reply with quote

Have tried first , what has given to you? Are you clear what would you want to achieve ?
If you want further help then provide us sample input, logic , output what yo want.

Add a Where condition to above sql,
Code:
Where act-id in  (12,15)
Back to top
View user's profile Send private message
maxsubrat

Active User


Joined: 27 Feb 2008
Posts: 108
Location: india

PostPosted: Wed Dec 02, 2015 3:45 pm
Reply with quote

Thanks
Back to top
View user's profile Send private message
Nic Clouston

Global Moderator


Joined: 10 May 2007
Posts: 2455
Location: Hampshire, UK

PostPosted: Wed Dec 02, 2015 7:38 pm
Reply with quote

And PLEASE use the code tags when presenting data.
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic View Bookmarks
All times are GMT + 6 Hours
Forum Index -> DB2

 


Similar Topics
Topic Forum Replies
No new posts how to extract a portion (e.g. fields... JCL & VSAM 2
This topic is locked: you cannot edit posts or make replies. Writng matched records into output fi... DFSORT/ICETOOL 11
No new posts Compare the file record count percent... DFSORT/ICETOOL 4
No new posts Record count of RECFM=U tape file DFSORT/ICETOOL 17
No new posts Need Help with on of the coalesce query DB2 4
Search our Forums:

Back to Top