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Case with top

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Topic

sz1
Aged Yak Warrior

555 Posts

Posted - 2013-01-08 : 08:47:27

Hi,

I'm trying to add another top 6 case statement to calulate the day before stats for a category field. Can this be included in the case statement?

Select Top 6 c.INTI_CATEGORY, count(c.ID) As TotalCat, --actual results
Case When c.OCCURED_DT = DATEADD("d",-1,GETDATE()) --calulate yesterday results
Then count(c.ID)End AS TotalCatYesterday
From DIM_CALL c
Where TYPE = 'Incident'
And c.OPEN_FLAG = 1 and c.ETL_CURRENT =1
Group by
c.INTI_CATEGORY ,
c.OCCURED_DT
Order By TotalCat Desc

SZ1
Learning and development is the driving force in the universe...!

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-01-08 : 23:53:36

sorry didnt get that. can you illustrate with sample data?
you'll only get 6 rows from above statement so didnt understand need of another top 6 over this!

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

sz1
Aged Yak Warrior

555 Posts

Posted - 2013-01-09 : 03:09:12

Hi

I need to include another top 6 for previous day too if this is possible.

The data I get back is 6 rows by category showing the top highest categories. I also want to be able to see the previous days top 6 categories to be able to compare and see whats gone up and down in the list. So I was thinking if I add to the code below an extra Top 6 case statement for the previous day I could get the results?

can this be achieved in the same query? or do I need 2 seperate datasets...

Maybe something like this:

--todays results
Select Top 6 c.INTI_CATEGORY, count(c.ID) As TotalCatToday,
--yesterdays results
Case When c.OCCURED_DT <= DATEADD("d",-1,GETDATE())
Then count(c.ID)End AS TotalCatYesterday
From DIM_CALL c
Where TYPE = 'Incident'
And c.OPEN_FLAG = 1 and c.ETL_CURRENT =1
Group by
c.INTI_CATEGORY ,
c.OCCURED_DT
Order By TotalCat Desc

Results: TotalCatYesteday is showing same results as TotalCatToday even though the dateadd is <= previous day?

any ideas?

INTI_CATEGORY TotalCatToday Date TotalCatYesterday
-------------------------------- ------------- ----------------------- -----------------

Central 129 2013-01-08 09:16:11.537 129
Local 93 2013-01-08 09:16:11.537 93
Core Applications 74 2013-01-08 09:16:11.537 74
Printers 54 2013-01-08 09:16:11.537 54
Mail Services 23 2013-01-08 09:16:11.537 23
Thin Client 21 2013-01-08 09:16:11.537 21

(6 row(s) affected)

SZ1
Learning and development is the driving force in the universe...!

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-01-09 : 03:31:18

do you mean getting previous ranks for top 6 items today or do you mean getting top 6 items for today and yesterday side by side?

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

sz1
Aged Yak Warrior

555 Posts

Posted - 2013-01-09 : 04:04:10

Top 6 rank today and yesterday side by side, is this possible in same query?...been trying to just pull the records for yesterday using the occured date field below to exclude calls less than datetime but I'm struggling a bit to get them side by side

Select Top 6 c.INTI_CATEGORY, count(c.ID) As TotalCat
From DIM_CALL c
Where TYPE = 'Incident'
And c.OPEN_FLAG = 1 and c.ETL_CURRENT =1
And c.OCCURED_DT <= '2013-01-08 23:59:59' /*And c.OCCURED_DT <= '2013-01-08 23:59:59'*/--been trying to just get figure here
--DATEADD(d,-1,GetDate())
Group by c.INTI_CATEGORY
Order By TotalCat Desc

SZ1
Learning and development is the driving force in the universe...!

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-01-09 : 04:23:28

[code]
SELECT Seq,
MAX(CASE WHEN DATEDIFF(dd,0,c.OCCURED_DT)= DATEDIFF(dd,0,GETDATE()) THEN INTI_CATEGORY END) AS TodayCat,
MAX(CASE WHEN DATEDIFF(dd,0,c.OCCURED_DT)= DATEDIFF(dd,1,GETDATE()) THEN INTI_CATEGORY END) AS YestCat
FROM
(
Select c.INTI_CATEGORY, count(c.ID) As TotalCat,
ROW_NUMBER() OVER (PARTITION BY DATEADD(dd,DATEDIFF(dd,0,c.OCCURED_DT),0) ORDER BY count(c.ID) DESC) AS Seq
From DIM_CALL c
Where TYPE = 'Incident'
And c.OPEN_FLAG = 1 and c.ETL_CURRENT =1
And c.OCCURED_DT >= '2013-01-08'
And c.OCCURED_DT < '2013-01-10'
Group by c.INTI_CATEGORY,DATEADD(dd,DATEDIFF(dd,0,c.OCCURED_DT),0)
)t
WHERE Seq<=6
GROUP BY Seq
[/code]

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

sz1
Aged Yak Warrior

555 Posts

Posted - 2013-01-09 : 04:35:08

I'm getting c.OCCURED_DT cant be bound on the first 2 below

MAX(CASE WHEN DATEDIFF(dd,0,c.OCCURED_DT)= DATEDIFF(dd,0,GETDATE()) THEN INTI_CATEGORY END) AS TodayCat,
MAX(CASE WHEN DATEDIFF(dd,0,c.OCCURED_DT)= DATEDIFF(dd,1,GETDATE()) THEN INTI_CATEGORY END) AS YestCat

Also, I see you have entered actual dates, is it possible for the query to recalculate on a daily basis?

Thanks

SZ1
Learning and development is the driving force in the universe...!

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-01-09 : 04:37:56

[code]
SELECT Seq,
MAX(CASE WHEN dt = DATEADD(dd,DATEDIFF(dd,0,GETDATE()),0) THEN INTI_CATEGORY END) AS TodayCat,
MAX(CASE WHEN dt= DATEADD(dd,DATEDIFF(dd,1,GETDATE()),0) THEN INTI_CATEGORY END) AS YestCat
FROM
(
Select c.INTI_CATEGORY, count(c.ID) As TotalCat,DATEADD(dd,DATEDIFF(dd,0,c.OCCURED_DT),0) AS dt,
ROW_NUMBER() OVER (PARTITION BY DATEADD(dd,DATEDIFF(dd,0,c.OCCURED_DT),0) ORDER BY count(c.ID) DESC) AS Seq
From DIM_CALL c
Where TYPE = 'Incident'
And c.OPEN_FLAG = 1 and c.ETL_CURRENT =1
And c.OCCURED_DT >= DATEADD(dd,DATEDIFF(dd,0,GETDATE()),-1)
And c.OCCURED_DT < DATEADD(dd,DATEDIFF(dd,0,GETDATE()),1)
Group by c.INTI_CATEGORY,DATEADD(dd,DATEDIFF(dd,0,c.OCCURED_DT),0)
)t
WHERE Seq<=6
GROUP BY Seq
[/code]

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-01-09 : 04:38:56

see this to understand logic used

http://visakhm.blogspot.in/2012/07/generate-datetime-values-from-integers.html

http://visakhm.blogspot.in/2012/12/different-ways-to-implement-date-range.html

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

sz1
Aged Yak Warrior

555 Posts

Posted - 2013-01-09 : 04:50:06

Its not returning what I would expect to see...this the what I have already, what I would like to see is the same for TotalCatYest, so CategoryYest and TotalCatYest in next 2 columns.

Category TotalCatToday
Central 129
Local 93
Core Applications 74
Printers 54
Mail Services 23
Thin Client 21

Your result shows this, also strangely you have one different from my one where Domain Services is Printers.

1 NULL Central
2 NULL Local
3 NULL Core Applications
4 NULL Domain Services
5 NULL Mail Services
6 NULL Thin Client

SZ1
Learning and development is the driving force in the universe...!

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-01-09 : 05:26:57

whats the significance of OPEN_FLAG = 1 and c.ETL_CURRENT=1?

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

sz1
Aged Yak Warrior

555 Posts

Posted - 2013-01-09 : 05:37:05

OPEN_FLAG = 1? means all calls that are open

and c.ETL_CURRENT=1? means using current up to date dataset information, if not it will return all records and we only want the current ones that are open.

Basically is just means show me everything that is open and valid.

SZ1
Learning and development is the driving force in the universe...!

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-01-09 : 05:59:25

are you sure you'll current day records with these values returned by query?

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

sz1
Aged Yak Warrior

555 Posts

Posted - 2013-01-09 : 06:08:39

This returns the top 6 current records, so 2 columns one with the cat name and the other with the cat total. So really just need to include the previous days records side by side or even on its own query for now.

--return top 6 only
Select Top 6 c.INTI_CATEGORY, count(c.ID) As TotalCat
From DIM_CALL c
Where TYPE = 'Incident'
And c.OPEN_FLAG = 1 and c.ETL_CURRENT =1
Group by c.INTI_CATEGORY
Order By TotalCat Desc

SZ1
Learning and development is the driving force in the universe...!

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-01-09 : 06:28:56

how can you guarantee that same categories will come in top 6 in previous day too?

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

sz1
Aged Yak Warrior

555 Posts

Posted - 2013-01-09 : 06:53:14

The top 6 count of ID and grouping of the category returns the top highest records, if all the records that are today are left out by only looking at occured date yesterday and backwards from there I would have thought that would have calculated the top 6 previous records only correctly? leaving out the current days selection. Otherwsie the only other way I can think of is to aggregate all the new current records and subtract these from all other open records from the previous days figure.

The categories may have changed slightly from previous day too, so the may differ slightly if a change has happened.
Does that help?

Also, I can check yesterdays results as I have a record, so can I change this query to just look at yesterday results leaving out todays by using the OCCURRED_DT field, if I have to have 2 queries one for today and one for yesterday I can work with that.

--return top 6 only
Select Top 6 c.INTI_CATEGORY, count(c.ID) As TotalCat
From DIM_CALL c
Where c.OCCURED_DT < DateAdd(dd,0,GETDATE())-1
and TYPE = 'Incident'
And c.OPEN_FLAG = 1 and c.ETL_CURRENT =1
Group by c.INTI_CATEGORY
Order By TotalCat Desc

Also, here I've asked for yesterdays date but the date is not doing anything, I need to bind it to the category count?

Declare @Date1 DateTime
Set @Date1 = '2013-01-08'
--return top 6 only
Select Top 6 c.INTI_CATEGORY, count(c.ID) As TotalCat,@Date1
From DIM_CALL c
--Where c.OCCURED_DT <= '2013-01-08' -- < DateAdd(dd,0,GETDATE())-1
where TYPE = 'Incident'
And c.OPEN_FLAG = 1 and c.ETL_CURRENT =1
Group by c.INTI_CATEGORY
Order By TotalCat Desc

SZ1
Learning and development is the driving force in the universe...!

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