Please start any new threads on our new site at We've got lots of great SQL Server experts to answer whatever question you can come up with.

Our new SQL Server Forums are live! Come on over! We've restricted the ability to create new threads on these forums.

SQL Server Forums
Profile | Active Topics | Members | Search | Forum FAQ
Save Password
Forgot your Password?

 All Forums
 General SQL Server Forums
 New to SQL Server Programming
 Comparing two data rows
 Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

Yak Posting Veteran

59 Posts

Posted - 09/25/2013 :  06:02:38  Show Profile  Reply with Quote

create table #prints(id int IDENTITY(1,1) NOT NULL,
Printermarkersupplyid varchar(36),PrinterID varchar(10),Description varchar(10),SupplyLevel int,ModifiedDate datetime)

insert into #prints(Printermarkersupplyid,PrinterID,Description,SupplyLevel,ModifiedDate)
select newid(),'P1','D1',100,'2013-08-1 03:28:38.203'
union all
select newid(),'P1','D1',0,'2013-8-2 03:28:38.203'
union all
select newid(),'P1','D1',100,'2013-8-3 03:28:38.203'
union all
select newid(),'P1','D1',80,'2013-8-4 03:28:38.203'
union all
select newid(),'P1','D1',0,'2013-8-5 03:28:38.203'
union all
select newid(),'P1','D1',100,'2013-8-6 03:28:38.203'
union all
select newid(),'P1','D2',80,'2013-8-7 03:28:38.203'
union all
select newid(),'P1','D2',0,'2013-8-8 03:28:38.203'
union all
select newid(),'P1','D2',0,'2013-8-9 03:28:38.203'
union all
select newid(),'P1','D2',80,'2013-8-10 03:28:38.203'
union all
select newid(),'P1','D2',70,'2013-8-11 03:28:38.203'

my requirement is to get the difference between adjacent difference between 2nd and 3rd or 6th and 7th but not 6th and 8th.
if difference between 2nd and 3rd is less than zero and 3rd modified date > 2nd modified date,then i should get count as 1 against 3rd row.


Thanks & Regards
Binto Thomas

Very Important crosS Applying yaK Herder

52326 Posts

Posted - 09/25/2013 :  07:44:26  Show Profile  Reply with Quote
something like

CASE WHEN t.SupplyLevel -t1.SupplyLevel < 0 AND t.ModifiedDate > t1.ModifiedDate THEN 1 ELSE 0 END AS Cnt
FROM Table t
OUTER APPLY (SELECT TOP 1 SupplyLevel,ModifiedDate
             FROM Table
             WHERE PrinterID = t.PrinterID
             AND  Description = t.Description
             AND ModifiedDate < t.ModifiedDate
             ORDER BY ModifiedDate DESC)t1

see scenario 2 here

SQL Server MVP
Go to Top of Page

Posting Yak Master

172 Posts

Posted - 09/25/2013 :  08:36:40  Show Profile  Reply with Quote
2012 ?

select *,
CASE WHEN SupplyLevel - lag(SupplyLevel)over(partition by PrinterID,Description order by ModifiedDate) < 0
AND ModifiedDate > lag(ModifiedDate)over(partition by PrinterID,Description order by ModifiedDate) THEN 1 ELSE 0 END AS Cnt
from #prints;
Go to Top of Page
  Previous Topic Topic Next Topic  
 Reply to Topic
 Printer Friendly
Jump To:
SQL Server Forums © 2000-2009 SQLTeam Publishing, LLC Go To Top Of Page
This page was generated in 0.03 seconds. Powered By: Snitz Forums 2000