Change a MINUS set operation to JOINS?

Hi guys,
I have a question about an SQL statement that I have to do. The complexity is big (lots of tables), but the problem can be resumed to this. Imagine I have the following query:
SELECT t.x
FROM the_table t
WHERE t.y = 'a'
MINUS
SELECT t.x
FROM the_table t
WHERE t.y = 'b'In my original statement, I don't have only one table but many. But the issue is the same. I select a set of data and I minus the same statement with another criteria. I tried with some OR combination but never had the same result...
Does anyone have an idea?
Thanks,

Please post a realistic example that demonstrates your problem. As Nikolay stated your MINUS isn't even needed making what you posted useless in trying to understand what you need to do.
So for starters post the following:
1. What Oracle version you are using for each server.
2. How many servers are involved.
3. Is this a new process or a current process that has performance or other issues? If a current process how is it being done now? What are the issues?
4. A statement of exactly what you are trying to do; not how you think it ought to be done but what the goal is.
5. A realistic example with actual tables, columns and queries
6. How many columns are there in the result set?
A sample set of source data and the set of result data you want to produce from that source.

Similar Messages

Does EDQ support MINUS set operation

Hi
I would like to implement a MINUS set operation using EDQ - is this possible in EDQ?
For example, I have duplicate records in my input set and I can use the group and merge processor to generate the unique records (btw, it selects the lowest id of the duplicate records) but I want to output all the other duplicated records (that were eliminated as part of group and merge processor) as part of separate output list so some cleanup action can be taken on those records.
For eg for following input set:
id code
1   code1
2   code 1
3   code 2
The output of group and merge (merge is done by code) is
id code
1 code1
What I want is to store the following output (that was discarded by group and merge) for cleanup actions later - how I can achieve this using EDQ?
id code
2 code1
Thank you for your time.
Thanks,
Priya

Thanks Mike. Good to know about other configurable options under Merge BUT I'm still not sure how can I get a list of "other" duplicated values - other than the one that is the output of Group and Merge processor.
Once again, my input data set is something like
<id> <code>
1       code1
2       code 1
3       code 2
The output of group and merge (merge is done by code and it uses the default to select the lowest id or first one available) is
<id> <code>
1      code1
(The above default behavior for the Group and merge is fine for our example.
BUT, What I want is to store the following output (that was discarded by group and merge) for cleanup actions later - how I can achieve this using EDQ?
<id> <code>
2      code1
(As you notice, code1 is duplicated twice in the input data set and I want to write to the output the other record - meaning id=2 in the above example)
Thanks,
Priya

Finding duplicates:Minus set operator in dealing with internal tables

Dear experts,
I am newbie to ABAP developement,i have been given an assignment to find the duplicate list of vendors in lfa table.
Now duplicate list doesnot means that text tokens will be just exact to conclude them as duplicate ,it could also be like
1111 Vendor ABC
1222 ABC Vendor
If anybody has clue ,how to work on such a problem ,plz come forward.
Right now i just tried initially how to find exact duplicates,i found on change command,it do works.
Then i am trying a new way which should just do the same thing.
I did as per this algorithm
1.Compute wholesome list in one internal table itab1
2.Used delete adjacent duplicates in itab2.
3.I feel itab3=itab1-itab2 will contain all duplicates in itab3.
Can anyone give me a hint.How can i do A-B ?.

Hi Arul,
There is no special aided SET operations upon internal tables in ABAP. Concerning your particular task I would say that you can try INSERT statement for each record in your internal table without preliminary comparing them with DB table. If there is a record in DB table with the same key then sy-subrc after INSERT will be non zero (actually 4) and no real insert would occur. So, only those records would be inserted which have no counterpart in DB table.
Best regards, Sergei

Help on use of minus set command

Hi everyone,
I have a challenge using minus to eliminate one-for-one occurence of records between 2 tables. The second table can contain duplicate entries.
What I want is - for every single record in table 1, I want to minus a single occurrence of the same record in table 2 even if there are 2 or more of that record in table 2.
I will appreciate any form of guidance.
Thanks

You won't be able to just remove the first instance from the second set using just the minus set operator as that will result in distinct values.
You would have to number the occurences somehow and just remove the first that way e.g.
SQL> ed
Wrote file afiedt.buf
1 with t2 as (select 2 as num from dual union all
2              select 1 from dual union all
3              select 2 from dual union all
4              select 3 from dual union all
5              select 4 from dual union all
6              select 2 from dual union all
7              select 3 from dual union all
8              select 2 from dual)
9      ,t1 as (select 1 as num from dual union all
10              select 2 from dual)
11 --
12 -- end of test data
13 --
14 select num
15 from (
16        select num, row_number() over (partition by num order by 1) as rn from t2
17        minus
18        select num, 1 from t1
19*      )
SQL> /
       NUM
         2
         2
         2
         3
         3
         4
6 rows selected.
SQL>

Set operator NE in Database View creation in join condition

Hi Experts,
I have a requirement to set NE(not equal) operator in join condition of Database View creation. Could you please help me how to set in operator.
Join condition :
Ex : BSAK-AUGBL NE BSAK-BELNR.
You know that by default operator is '='. i want to set NE in place of '='.
Thanks,

Hi Chinna,
Check whether if there is any possibility or not to include more key fields like bukrs, lifnr, gjahr etc in the where condition, so that you query may result faster. Then, there won't be any necessary to create the view.
Hope this helps.
Please reward if useful.
Thanks,
Srinivasa

Set operator Vs Self join

hi all,
i have a main table and a corresponding history table.
Like employee and h_employee both has primary key as emp_id.
now i want a query which should only retrieve the common values among these two table.
I have an idea of doing this in two way 1.self join 2. set operator
1.select emp_id
from emp e,h_emp h
using (emp_id)
2. select emp_id from emp
intersect
select emp_id from h_emp
now guide me which gives better performance? how to evaluate the performance in PL/SQL Developer client?
is there any keyword to trace the timing of the each query?
Please advice.
Regards,
Slu

Set operators combines the output of 2 or more queries into single output....
Internally its doing sorting the two tables
Join is just matching the records based on the where condition ....
use Explain plan to the cost of the query
SQL> Explain plan for select emp_id
from emp e,h_emp h
using (emp_id)
and use
SQL > select * from plan_table
to see the cost...
Edited by: LPS on Jul 12, 2011 12:08 AM

Set operations & tables with different columns

I have a problem. I have 3 tables - Countries, Locations & Departments. I want to output the country_id and country_name from the countries tables for countries that have no departments. Locations has country_id and location_id columns and departments has location_id and department_id columns. All is in Database 11g. I can produce a table which gives me the locations with departments or without departments as follows:
select location_id from locations intersect select location_id from departments;
This gives me a list of locations with departments. Conversely I can get a list of locations without departments as follows:
select location_id from locations minus select location_id from departments;
However, to combine this output with the countries table I need to produce country_id in the output. However, when I try to add country_id to my code from above as follows:
select country_id, location_id from locations intersect select to_char(null), location_id from departments;
I get no rows found. I understand why. There is no intersection between country_id in locations and the null output from departments (where there is no country_id column). Alternatively, if I try as follow:
select country_id, location_id from locations minus select to_char(null), location_id from departments;
I get rows with every country_id whether they have departments or not. Again, I understand why. I am essentially subtracting nothing (the to_char(null) from departments) from the country_id column in locations and getting the entire country_id column as output.
How can I use set operations to produce the country_id column? I also do not want to show the location_id problem.
This problem is repeated when I try for the final country_id, country_name final output. The countries table has these columns. However, the locations table does not have the country_name column. It only has the country_id column. So a query such as this one:
select country_id, country_name from countries intersect country_id, to_char(null) from locations;
presents me with the same problem as above. The country_id column intersects nicely, but the country_name file does not intersect as it does not exist in the locations table. Again, how can I use set operations to produce the country_id and country_name columns.

Hi,
the method I outlined for you above should be fine. It doesn't matter that there are one-to-many relationships which may cause repeated output rows; set operations (except for UNION ALL ) always return distinct rows.
Can you do a query on the countries table, that shows all countries?
Can you do a query involving all 3 tables inner-joined, that shows the countries that are related to locations and departments? (Repeated rows are okay.)
Then you can do a MINUS, to get only the countries that are not related to departments.
If you get stuck, post a little sample data (CREATE TABLE and INSERT statements), the results you want from tha data, your best attemptat a query, and a description of the problem (including the full error message, if any).

Scrap quantity to be minus with operation sequence is not check in co01

hello!
PP experts
i have problem in confirmation of production order.
suppose i have production order of 15 qtys.with four operation to be confirmed (co11).
operation qty.yield srcap qty.
0010          1 5              0
0020          14              1
0030          14              0
now, in 0020 operation i have 14 yield & 1 srcap quantity & when i go for 0030
operation for confirmation it will show the default quantity of previous operation,0020 qty. i,e 14 qtys.but if i put the quantity 15 in this operation (0030)
its allowing to confirmed 15 qtys. because the plan qty is 15.but i want to minus the 1srcap qty. from 15 plan qty. & system should allowed only 14 qtys
(15-1=14) for confirmation.plus i want the flexibility of operation sequence not to checked.
i set operation sequence - error when operation sequence is not adhered to in OPK4,its minus the scrap qty. but not allowing the flexibility of operation sequence
confirmations.
please send me the setting for the above query in the confirmation (co11)
regards,
mangesh
thsnks

Mangesh
1) you have confirmed yield qty14 nos in operation 020 , scrap Qty 1
2) Automatically in during confirmation of operation 030, in yield qty field 14 nos is coming
3) If you want to change that operation 030, yield qty into 15, system giving error message
4) you want the system to accept the 15 nos in operation 030
Pl state whether my understanding is right

Set operations usecase

hi,
I am a new bee and would like to understand the use of SET operations ( UNION, UNIONALL, MINUS, INTERSECTION) can't we do the same with the use of JOINS ? Am I wrong ? please correct me....and few examples where there is no alternate except using SET operations will help me to understand the thing more clearly...
Thanks and regards
mahesh.

Documentation at http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/queries004.htm#i2054381 might prove useful.

Problem in Adhoc Query's set operation functionality.

Hi Experts,
I am facing problem executing Adhoc Query's set operation functionality.
In Selection Tab, following operations are performed :-
Execute a query and mark it as 'Set A'.(Say Hit list = X)
Execute another query and mark it as 'Set B'.(Say Hit list = Y)
In Set operation Tab, following operations are performed :-:-
Carry out an Operations 'Set A minus Set B'.
which results in Resulting Set = Z.
Transfer the resulting set 'in hit list' and press the copy resulting set button.
In Selection Tab, Hit list is populated with Z.
And when output button is pressed, I get to see 'Y' list and not 'Z' list.
Kindly help.
Thanks.
Yogesh

Hi Experts,
I am facing problem executing Adhoc Query's set operation functionality.
In Selection Tab, following operations are performed :-
Execute a query and mark it as 'Set A'.(Say Hit list = X)
Execute another query and mark it as 'Set B'.(Say Hit list = Y)
In Set operation Tab, following operations are performed :-:-
Carry out an Operations 'Set A minus Set B'.
which results in Resulting Set = Z.
Transfer the resulting set 'in hit list' and press the copy resulting set button.
In Selection Tab, Hit list is populated with Z.
And when output button is pressed, I get to see 'Y' list and not 'Z' list.
Kindly help.
Thanks.
Yogesh

Change the currency of Operating Concern COPA

Hi,
In my SAP environment there are 4 controlling areas. Only one of them is assigned to Operating concern. The remaining 3 have COPA inactive.
I would like to extend the existing operating concern to remaining 3 controlling areas, but before I do that I need to change the Operating concern currency as the one currently set is only relevant for only one controlling area and company code which is GBP. I need to change it to group currency - USD.
When I use F1 help on currency field in Operating Concern settings in configuration, I get information that 'once data has been posted, however, a change in the operating concern currency would cause the existing data to be interpreted as if it were posted in the new currency (for example: USD 1000.00 in old currency -> DEM 1000.00 in new currency).'
Even though we have transactional data posted in that operating concern , it is not being used by any department and we are quite happy to have existing data interpreted in USD instead of GBP. No reports are being generated in COPA currently so it will not be an issue for us. We want new data to be proper and constistent.
When I try to change the currency in operating concern config, the field is greyed out. I believe there is more complex workaround for that, but the only note I found on this is 651142 which says that SAP provides different tools to reorganize operating concern. But no further details are included.
If anybody managed to change operating concern currency, please help me with that.
Regards,
Karol

Hi Karol
I read the note given by you.. It asks you to contact the SAP for SLO Service (System Landscape Optimization )
This is a chargeable service by SAP... In case you decide to go ahead with this, do share your experience with us
Create an OSS msg and give ref of this note... I would suggest to go with SAP service and not with any one else's experiences... The tools that SAP is talking about are available only with SAP..
You may try to archive the existing data from COPA tables and then see if the currency field opens up for editing.. Am not sure about it..
Regards
Ajay M

I keep all of my music on my iPod Classic. I inadvertently changed the sync setting on my iPhone 5 to sync the music with my phone. I am overcapacity and want to remove the music from my phone. How do I do that?

I keep all of my music on my iPod Classic. In error, I changed the sync setting on my iPhone 5 to sync the music with my phone. I am overcapacity on my phone and don't want any music on my phone so I want to remove the music from my phone without disturbing my iTune music files on my PC and iPod. How do I do that?

On your phone: Settings>General>Usage>Music...tap the Edit button...then the red minus sign. This will delete all music on your phone.

Mapping - split followed by set operation

Hi I'm trying to set up a mapping to use as part of testing my warehouse and need some help.
Overview
======
I have a number of different databases that combine through to my operational data store. One verification of our mappings is a simple check of record counts, source table vs target.
Because table names differ between source and target I have loaded (from a flat file) a translation table that maps one table name to another.
I have external SQL scripts that run on a scheduled basis to capture table names, record counts and date of last update from the system tables of four of my source databases and my target database. (soon I'll need to try and replace these with OWB scripts)
I am trying to build a mapping to conform these so I end up with a single fact listing target table, record count, update date, source table, source environment, record count, update date.
I have taken my statistics on the target database, outer Joined it to the translation table (not all target tables have matching translation table records)
Then split the result set by target environment (and remainder)
Then I join each result set to the statistics for the appropriate source.
Next I am using a set operation to union all the results back to my conformed result.
My Problem
=========
Those tables in the target database that do not correspond to a table in one of the four sources cause a problem. (they are either summary facts, flat files loaded or sourced from other databases I have not got statistics on yet)
I cant just link from the splits output set to the set operation because the other joins have added extra fields for number of records in the source. The documentation is very clear that the same fields must exist in the same order and datatype.
I have been trying to work out which mapping operation/s will produce the equivalent of SQL like select col1, col2, null, sysdate, null from mytable
Hmm as I type this up I think another alternative may be to output extra fields in the split (so it looks like the dataset after the join) but not to pass these fields on in the join for sets for specific environments. Ill try that alternative but would still like help with which mapping operator I could have used.

Can I have a little bit more technical information : A small exmaple would be very helpful.
Regards
-Arnab

Scrap quantity to be minus with operation sequence is not check in co11

hello!
PP experts
i have problem in confirmation of production order.
suppose i have production order of 15 qtys.with four operation to be confirmed (co11).
operation qty.yield srcap qty.
0010 1 5 0
0020 14 1
0030 14 0
now, in 0020 operation i have 14 yield & 1 srcap quantity & when i go for 0030
operation for confirmation it will show the default quantity of previous operation,0020 qty. i,e 14 qtys.but if i put the quantity 15 in this operation (0030)
its allowing to confirmed 15 qtys. because the plan qty is 15.but i want to minus the 1srcap qty. from 15 plan qty. & system should allowed only 14 qtys
(15-1=14) for confirmation.plus i want the flexibility of operation sequence not to checked.
i set operation sequence - error when operation sequence is not adhered to in OPK4,its minus the scrap qty. but not allowing the flexibility of operation sequence
confirmations.
please send me the setting for the above query in the confirmation (co11)
regards,
mangesh

Hi,
The same question was asked few days before by MR Gowri Sankar. The same question you are repeating
check in OPKP Production scheduling profile in the confirmation Tab
Enable the check box Adjustment quantities in order to actuals and then try
in CO11n.
Also you need to set the overdelivery tolerance as warning message in opk4.
Regards,
nandha

RFE Proposal Set Operations - RFC

Greetings, this is a proposal for a Request for Enhancement in the JDK. It
is posted here for the review and comment. Basically an RFC on a RFE. =)
Please indicate your comments on the matter.
The proposal is to have a set of operations for perfomring Non-destructive
mathematical set operations on collections. Additionally, the addition of
set operations to rename the old operations int java.util.Collection
interface to names that are mathematically accurate; so that
removeAll(Collection c) would have an alias of difference(Collection c) and
retainAll(Collection c) would have a alias of intersection(Collection c).
The following methods would be added to the java.util.Collections class.
* Performs the non-descturctive union of two collections.
* The resulting collection is the union of the two collections with no
duplicates.
* @author Robert Simmons Jr.
* @param a The first collection of objects.
* @param b The second collection of objects.
* @return The collection wise union of and b.
public final static Collection collectionUnion(final Collection a, final
Collection b) {
Collection results = new HashSet(a);
Iterator iter = b.iterator();
while (iter.hasNext())
results.add(iter.next());
return results;
* Performs the intersection of two collections.
* The resulting collection is the intersection of the two collections with
no duplicates.
* @author Robert Simmons Jr.
* @param a The first collection of objects.
* @param b The second collection of objects.
* @return The collection wise intersection of a and b.
public final static Collection collectionIntersection(final Collection a,
final Collection b) {
Collection results = new HashSet();
Iterator iter = a.iterator();
Object element = null;
while (iter.hasNext()) {
    element = iter.next();
    if (b.contains(element)) results.add(element);
return results;
* Performs the difference of two collections.
* Removes all elements from a that appear in b.
* @author Robert Simmons Jr.
* @param a The first collection of objects.
* @param b The second collection of objects.
* @return The collection wise difference of b elements removed from a.
public final static Collection collectionDifference(final Collection a,
final Collection b) {
Collection results = new HashSet(a);
Iterator iter = b.iterator();
while (iter.hasNext())
    results.remove(iter.next());
return results;
* Performs the XOR union of two collections.
* The resulting collection is the union of the two collections with objects
that appear in
* a and b left out.
* @author Robert Simmons Jr.
* @param a The first collection of objects.
* @param b The second collection of objects.
* @return The collection wise union of a and b excluding any objects that
appear in both a and b.
public final static Collection collectionXORUnion(final Collection a, final
Collection b) {
Collection results = new HashSet(a);
Iterator iter = b.iterator();
Object element = null;
while (iter.hasNext()) {
    element = iter.next();
    if (!(b.contains(element))) results.add(element);
return results;
* Performs the union of two maps.
* The resulting map is the union of the two maps with no duplicates.
* When working with set operations on a map, the set is assumed to be the
key set. For
* this reason, if both sets have the same key but different values then the
value from
* set b will beused as the value.
* @author Robert Simmons Jr.
* @param a The first map of objects.
* @param b The second map of objects.
* @return The map wise union of and b.
public final static Map mapUnion(final Map a, final Map b) {
Map results = new HashMap(a);
Iterator iter = b.keySet().iterator();
Object key = null;
while (iter.hasNext()) {
    key = iter.next();
    results.put(key, b.get(key));
return results;
* Performs the intersection of two maps.
* The resulting map is the intersection of the two maps with no duplicates.
* When working with set operations on a map, the set is assumed to be the
key set. For
* this reason, if both sets have the same key but different values then the
value from
* set b will beused as the value.
* @author Robert Simmons Jr.
* @param a The first map of objects.
* @param b The second map of objects.
* @return The map wise intersection of a and b.
public final static Map mapIntersection(final Map a, final Map b) {
Map results = new HashMap();
Iterator iter = a.keySet().iterator();
Set bKeys = b.keySet();
Object key = null;
while (iter.hasNext()) {
    key = iter.next();
    if (bKeys.contains(key)) results.put(key, b.get(key));
return results;
* Performs the difference of two maps.
* Removes all elements from a that appear in b.
* In this case, the set is determined to be the set of keys. The set of
keys from
* b will be used to remove keys from a.
* @author Robert Simmons Jr.
* @param a The first map of objects.
* @param b The second map of objects.
* @return The map wise difference of b elements removed from a.
public final static Map mapDifference(final Map a, final Map b) {
Map results = new HashMap(a);
Iterator iter = b.keySet().iterator();
while (iter.hasNext())
results.remove(iter.next());
return results;
* Performs the XOR union of two maps.
* The resulting map is the union of the two maps with objects that appear
in
* a and b left out.
* When working with set operations on a map, the set is assumed to be the
key set. For
* this reason, if both sets have the same key but different values then the
value from
* set b will beused as the value.
* @author Robert Simmons Jr.
* @param a The first map of objects.
* @param b The second map of objects.
* @return The map wise union of a and b excluding any objects that appear
in both a and b.
public final static Map mapXORUnion(final Map a, final Map b) {
Map results = new HashMap();
Iterator iter = a.keySet().iterator();
Set bKeys = b.keySet();
Object key = null;
while (iter.hasNext()) {
    key = iter.next();
    if (!(bKeys.contains(key))) results.put(key, b.get(key));
return results;
}Transcript of mail session with Sun java developer after bug submission:
Hi Robert Simmons Jr.,
Thank you for the feedback.
The method names in java.util.Set conform to the parent interface,
java.util.Collection. As for the destruction situation, returning a new set
also would involve creating and populating a new set.
If you would like to pursue this Request for Feature Enhancement (RFE)
further,
I would suggest that you first post this idea to a newsgroup and request
comment from other Java developers. The issues that we have discussed are a
good starting point.
You can view a list of Java newsgroups at:
http://java.sun.com/aboutJava/newsgroups.html
Based on the responses, please feel free to submit a new RFE containing a
link to the newsgroup. Thank you for your time.
Regards,
Jonathan
"Simmons, Robert" wrote:
>
I understand your reply now. However I put it to you that the names ofthese
operations are HORRIBLY named. They should be named according to the
mathematical operations. Further, they are destructive to the set being
checked and I dont want that. The set operations should give me back a set
and not destroy the current set. If they destroy the current set then Ihave
to spend time copying the thing before I run the set operation which is
truly not performant. Do an intersection of 400,000 elements with anotherfo
300,000 elements and you have to first copy one and then the retain all
method has to iterate through the entire set. This is very bad logic. Inthe
code I gave you, you have to only iterate through the set and not copy it.>
----------------- Original Bug Report-------------------
category : java
release : 1.4
subcategory : classes_util
type : rfe
synopsis : java.util.Collections Class Should Implement Logical Set
Operations
description : FULL PRODUCT VERSION :
This issue is pertinent to all java versions including the new 1.4 version.
FULL OPERATING SYSTEM VERSION : Occurs in all operating
Systems.
ADDITIONAL OPERATING SYSTEMS : NA
A DESCRIPTION OF THE PROBLEM :
The java.util.Collections class is a class that is used to
manipulate sets and change them into various forms. Missing
from this is a feature that would define set operations,
such as Union, Intersection, and so on on the sets. This
would be extremely beneficial. I have written an extension
to this class that does just that and would like to submit
it for donation. All I ask is that the javadoc tag naming
me as author be retained.
This bug can be reproduced always.
---------- BEGIN SOURCE ----------

---------- END SOURCE ----------
CUSTOMER WORKAROUND :
Writing your own classes to do this, however it is so basic
that it should be in there.
workaround :
suggested_val :
cust_name : Robert Simmons Jr.
cust_email : [email protected]
jdcid : Derisor (old one was gnuish)
keyword : webbug
company : Ingeniums Pharmaceuticals AG
hardware : x86
OSversion : Linux
bugtraqID : 0
dateCreated : 2002-03-11 13:31:18.3
dateEvaluated : 2002-04-11 18:08:17.247
Robert Simmons Jr.
Senior Software Engineer
Ingenium Pharmaceuticals, Munich Germany.
Robert Simmons Jr.
Senior Software Engineer
Ingenium Pharmaceuticals, Munich Germany.
Robert Simmons Jr.
Senior Software Engineer
Ingenium Pharmaceuticals, Munich Germany.

Additional Bump. Seeking comments.

Change a MINUS set operation to JOINS?

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