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Ranking in WebFOCUS
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Syed
Platinum Member
posted
Hi,
I need to achieve rankiong in the following manner:

dept Val rank

R1 450 1
R2 300 2
R3 300 2
R4 250 4
R5 250 4
R6 250 4
R7 250 4
R8 200 8

Given the VAL column how do I achieve this kind of ranking through the WebFOCUS function 'RANK' available ? By default, the RANK functions as follows:
R1 450 1
R2 300 2
R3 300 2
R4 250 3
R5 250 3
R6 250 3
R7 250 3
R8 200 4

by using:
TABLE FILE <>
PRINT
DEPT
Ranked by VAL
END


Using WF 7.1.7/Dev Studio
 
Posts: 189 | Location: Boston, MA | Registered: July 12, 2005Report This Post
FrankDutch
Virtuoso
posted Hide Post
Sayd

Yes the coding is basically correct except for not using uppercase.
But if you want the output in the format as printed (with the rank code in the third position you should do this.
I assume the field "rank" is not a real database field.

TABLE FILE WHATEVER
PRINT DEPT VAL 
RANKED BY VAL
ON TABLE HOLD
END
TABLE FILE HOLD
PRINT DEPT VAL RANK
BY RANK NOPRINT
BY DEPT NOPRINT
END


Would you be so kind to change your signatur so we know which version you are using




Frank
prod: WF 7.6.10 platform Windows,
databases: msSQL2000, msSQL2005, RMS, Oracle, Sybase,IE7
test: WF 7.6.10 on the same platform and databases,IE7

 
Posts: 2387 | Location: Amsterdam, the Netherlands | Registered: December 03, 2006Report This Post
Alan B
Virtuoso
posted Hide Post
Don't forget the stylesheet SEQUENCE command.
TABLE FILE Fn
PRINT
DEPT
RANKED BY VAL
ON TABLE SET STYLE *
TYPE=REPORT,COLUMN=N2,SEQUENCE=1,$
TYPE=REPORT,COLUMN=N3,SEQUENCE=2,$
TYPE=REPORT,COLUMN=N1,SEQUENCE=3,$
ENDSTYLE
END


Alan.
WF 7.705/8.007
 
Posts: 1451 | Location: Portugal | Registered: February 07, 2007Report This Post
TexasStingray
Master
posted Hide Post
If you want to control it all your self try this.

TABLE FILE CAR
PRINT 
  CAR 
  RETAIL_COST 
  AND COMPUTE ROWNUM/I9 = LAST ROWNUM + 1;
BY HIGHEST RETAIL_COST NOPRINT
ON TABLE HOLD
END

-RUN

TABLE FILE HOLD
PRINT 
  CAR 
  RETAIL_COST 
  AND COMPUTE MYRANK/I9 = IF RETAIL_COST EQ LAST RETAIL_COST THEN LAST MYRANK ELSE ROWNUM; AS 'RANK'
END


In this example I am not doing any summing but if you do and depending on your RDBMS this could be faster.

Hope this helps




Scott

 
Posts: 865 | Registered: May 24, 2004Report This Post
FrankDutch
Virtuoso
posted Hide Post
quote:
ON TABLE SET STYLE * TYPE=REPORT,COLUMN=N2,SEQUENCE=1,$ TYPE=REPORT,COLUMN=N3,SEQUENCE=2,$ TYPE=REPORT,COLUMN=N1,SEQUENCE=3,$ ENDSTYLE


Alan
This is a smart functionality. I wonder if it can be done via the GUI.

What about performance if there are a lot of data.
I wonder what the difference would be on these 3 solutions.




Frank
prod: WF 7.6.10 platform Windows,
databases: msSQL2000, msSQL2005, RMS, Oracle, Sybase,IE7
test: WF 7.6.10 on the same platform and databases,IE7

 
Posts: 2387 | Location: Amsterdam, the Netherlands | Registered: December 03, 2006Report This Post
Alan B
Virtuoso
posted Hide Post
I'll run a test using all 3 methods Frank and post results and also check about the GUI.

Sequence is one of my favourite bits.


Alan.
WF 7.705/8.007
 
Posts: 1451 | Location: Portugal | Registered: February 07, 2007Report This Post
Alan B
Virtuoso
posted Hide Post
Okay,
The Sequence option for the style sheet is available in the GUI.

Select the Options Button, Select Custom field placement, press OK and then drag the columns where you want them. Works good.

Performance.
Perhaps this isn't fair, the SEQUENCE approach does not go through a HOLD file. I ran various tests (36 in all) on 15,000, 150,000 and 1,500,000 records, different orders and under restarted servers and under new agents.

From a base mark of the approach TS used:
Frank's method - 4% saving CPU, no noticeable saving for I/O, 7% saving response time.
My method - 9% saving CPU, 92% saving for I/O, 14% saving response time.

Which goes to prove that HOLD files eat I/O!


Alan.
WF 7.705/8.007
 
Posts: 1451 | Location: Portugal | Registered: February 07, 2007Report This Post
FrankDutch
Virtuoso
posted Hide Post
Alan

Good to know there is significant difference. One of the labs I did at summit maid me ask.




Frank
prod: WF 7.6.10 platform Windows,
databases: msSQL2000, msSQL2005, RMS, Oracle, Sybase,IE7
test: WF 7.6.10 on the same platform and databases,IE7

 
Posts: 2387 | Location: Amsterdam, the Netherlands | Registered: December 03, 2006Report This Post
Syed
Platinum Member
posted Hide Post
Hi all
Thanks a lot for your inputs! I'll try to incorporate your suggestions and revert to you if I have any issues.

Sorry for the rather late replySmiler

Regards
Syed
Using WF 7.1.4 through Citrix


Using WF 7.1.7/Dev Studio
 
Posts: 189 | Location: Boston, MA | Registered: July 12, 2005Report This Post
Leo L
Gold member
posted Hide Post
I had posted this a couple years ago for the ranking and using only 1 table call.. although the person was looking for a TOP 100 report where there were only 100 entries and not more because of ties.

So for this question, getting "actual ranking" and having Rank in the 3rd column would be:

  
TABLE FILE TNAME
PRINT COMPUTE RANKNUM/I6 = RANKNUM + 1; NOPRINT
DEPT VAL 
COMPUTE RANK/I6 = IF VAL EQ LAST VAL THEN LAST RANK ELSE RANKNUM;
BY HIGHEST VAL NOPRINT
END

This message has been edited. Last edited by: Leo L,


Prod: WebFOCUS 7.6.4 - Self Service - Windows Server2003 - Apache Tomcat 5.5
Dev: WebFOCUS 7.6.4 - Self Service - Windows XP SP2 - Apache Tomcat 5.5
 
Posts: 96 | Location: Winnipeg, Manitoba, Canada | Registered: January 22, 2004Report This Post
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