Solved

Query to compare the contents of a field using PL/SQL

Posted on 2007-11-19
9
1,542 Views
Last Modified: 2013-12-07
I need to compare the contents of a field to make sure that the fields have the same value.  For example here is the table stucture:

PONUM              ITEMNUM         POLINENUM         CCNUMBER
1234                   3214                       1                    012345678
1234                   4325                       2                    987654321

I need to compare the contents of CCNUMBER to make sure they are the same.  How would I best handle this task using PL/SQL?          
0
Comment
Question by:ewgf2002
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
  • 2
9 Comments
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 20312823
>I need to compare the contents of CCNUMBER to make sure they are the same.
can you explain a bit more what you mean with "they need to be the same"?

I guess, for the same PONUM you must have the same CCNumber?
0
 

Author Comment

by:ewgf2002
ID: 20312837
That is correct.
0
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 20312851
what about this code to identify them:
select PONUM  , max(CCNUMBER), min(CCNUMBER)
from yourtable
GROUP BY PONUM
HAVING max(CCNUMBER) <> min(CCNUMBER)

Open in new window

0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 74

Expert Comment

by:sdstuber
ID: 20312858
I wouldn't use pl/sql at all.  I'd do it with sql.

SELECT *
  FROM (SELECT ponum, ccnumber, COUNT(DISTINCT ccnumber) OVER(PARTITION BY ponum) cnt
          FROM my_table)
 WHERE cnt > 1
0
 
LVL 74

Expert Comment

by:sdstuber
ID: 20312891
select PONUM  , max(CCNUMBER), min(CCNUMBER)
from yourtable
GROUP BY PONUM
HAVING max(CCNUMBER) <> min(CCNUMBER)

This doesn't work if ccnumber has any nulls in it

0
 

Author Comment

by:ewgf2002
ID: 20312920
What if CCNUMBER does have nulls
0
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 250 total points
ID: 20312975
if there are nulls, you can try this
select PONUM  , max(CCNUMBER), min(CCNUMBER)
from yourtable
GROUP BY PONUM
HAVING max(NVL(CCNUMBER, 'XXXXXXXXXXXXXXXXXX')) <> min(NVL(CCNUMBER,'000000000000000000'))

Open in new window

0
 
LVL 74

Assisted Solution

by:sdstuber
sdstuber earned 250 total points
ID: 20312988
you'll need to nvl them to some dummy value
actually same thing applies to my query as well.
I noticed that as soon as I posted the hole in angeliii's query, mine had the same hole.  :)

SELECT *
  FROM (SELECT ponum, ccnumber, COUNT(DISTINCT NVL(ccnumber, -999)) OVER(PARTITION BY ponum) cnt
          FROM my_table)
 WHERE cnt > 1;

select PONUM  , max(nvl(CCNUMBER,-999)), min(nvl(CCNUMBER,-999))
from yourtable
GROUP BY PONUM
HAVING max(nvl(CCNUMBER,-999)) <> min(nvl(CCNUMBER,-999))





0
 
LVL 74

Expert Comment

by:sdstuber
ID: 20313062
note,  my version of angeliii's updated query doesn't return the same results as his updated version.

If all ccnumbers for a ponum are null, I count that as the same ccnumber.
angeliii does not

both are reasonable answers to your question, only you can decide which is more appropriate for your application though.


We both count a mix of null and not null as different ccnumber's.




0

Featured Post

PeopleSoft Has Never Been Easier

PeopleSoft Adoption Made Smooth & Simple!

On-The-Job Training Is made Intuitive & Easy With WalkMe's On-Screen Guidance Tool.  Claim Your Free WalkMe Account Now

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Working with Network Access Control Lists in Oracle 11g (part 1) Part 2: http://www.e-e.com/A_9074.html So, you upgraded to a shiny new 11g database and all of a sudden every program that used UTL_MAIL, UTL_SMTP, UTL_TCP, UTL_HTTP or any oth…
Have you ever had to make fundamental changes to a table in Oracle, but haven't been able to get any downtime?  I'm talking things like: * Dropping columns * Shrinking allocated space * Removing chained blocks and restoring the PCTFREE * Re-or…
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.
This video shows setup options and the basic steps and syntax for duplicating (cloning) a database from one instance to another. Examples are given for duplicating to the same machine and to different machines

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question