Merge records from resultset by its unique key

Java 1.6 - can someone help me, how to efficiently traverse through the resultset and merge the records by unique ID - coming from one - many relationship tables not using group by clause

Order the results by the relevant value so you can work with all the results for a given id at the same time, then move to a new id.
if you can't do that, then you have to keep all objects in memory, which, depending on the number of records, may cause memory problems.

Similar Messages

Error in Duplicate record validation in EntityObject using unique key contraint

I have implemented Unique key validation in Entity Object by creating Alternate key in Entity object.
So the problem is that whenever the duplicate record is found,the duplicate record error is shown, but the page becomes blank, and no error is shown in the log.
I wanted to know what may be the possible cause of it.
I am using Jdev 11.1.2.4.

After duplication, clear the PK item, then populate from the sequence in a PRE-INSERT block-level trigger.
Francois

Find matching records from two tables, useing three key fields, then replace two fields in table1 from table2

I have two tables - table1 and table2 - that have the exact same schema. There are three fields that can be used to compare the data of the two tables, field1, field2, and field3. When there are matching rows in the two tables (table1.field1/2/3 = table2.field1/2/3)
I want to replace table1.field4 with table2.field4 and replace table1.field5 with table2.field5.
I have worked with the query but have come up with goobly goop. I would appreciate any help. Thanks.

If your field1, field2, and field3 combinations in these tables are unique, you
can do a join on them.
Select t1.field4, t2.field4 , t1.field5, t2.field5
from table1 t1 inner join table2 t2 on t1.field1 =t2.field1 and t1.field2=t2.field2 AND t1.field3=t2.field3
--You can update your table1 with following code:
Merge table1 t1
using table2 t2 on
on t1.field1 =t2.field1 and t1.field2=t2.field2 AND t3.field3=t2.field3
When matched then
Update Set
t1.field4= t2.field4
,t1.field5 = t2.field5 ;

Update mutliple records from resultset

Hi
I execute a query which results in multiple records .I update a few checkboxes which come out with the records. I need to update these records into tables for which I call a servlet.How will I pass the record sets into the servlet to update
Thanks
Arn

Here's what you do.
1. Get a book about Servlets.
2. Read it.
Problem solved.

Is it possible to merge records from the Adressbook?

1.) If I have 5 people in the group (Addressbook) "friends01" on machine B (Imac stationary) and then takes machine A (laptop) with me and returns with 10 new people which was added into the group "friends01" while away and want machine B to be updated with a total of 15 friends (10 new). How can I do it most elegantly?
2.) Is it a way to do this easy with the whole address book database? Lets say I have updated a few new people here and there (not too organized and not put into groups while away on computer A and then returns to my stationary computer B and just want it to import the new people and not overwrite or delete anything?

Or the Adobe PDF Pack service.

Unique Key Violation error while updating table

Hi All,
I am having problem with UNIQUE CONSTRAINT. I am trying to update a table and getting the violation error. Here is the over view. We have a table called ActivityAttendee. ActivityAttendee has the following columns. The problem to debug is this table has
over 23 million records. How can I catch where my query is going wrong?
ActivityAttendeeID INT PRIMARY KEY IDENTITY(1,1)
,ActivityID INT NOT NULL (Foreign key to parent table Activity)
,AtendeeTypeCodeID INT NOT NULL
,ObjectID INT NOT NULL
,EmailAddress VARCHAR(255) NULL
UNIQUE KEY is on ActivityID,AtendeeTypeCodeID,ObjectID,EmailAddress
We have a requirement where we need to update the ObjectID. There is a new mapping where I dump that into a temp table #tempActivityMapping (intObjectID INT NOT NULL, intNewObjectID INT NULL)
The problem is ActivityAttendee table might already have the new ObjectID and the unique combination.
For example: ActivityAttendee Table have the following rows
1,1,1,1,NULL
2,1,1,2,NULL
3,1,1,4,'abc'
AND the temp table has 2,1
So essentially when I update in this scenario, It should ignore the second row because, if I try updating that there will be a violation of key as the first record has the exact value. When I ran my query on test data it worked fine. But for 23 million records,
its going wrong some where and I am unable to debug that. Here is my query
UPDATE AA
SET AA.ObjectID = TMP.NewObjectID
FROM dbo.ActivityAttendee AA
INNER JOIN #tmpActivityMapping TMP ON AA.ObjectID = TMP.ObjectID
WHERE TMP.NewObjectID IS NOT NULL
AND NOT EXISTS(SELECT 1
FROM dbo.ActivityAttendee AA1
WHERE AA1.ActivityID = AA.ActivityID
AND AA1.AttendeeTypeCodeID = AA.AttendeeTypeCodeID
AND AA1.ObjectID = TMP.NewObjectID
AND ISNULL(AA1.EmailAddress,'') = ISNULL(AA.EmailAddress,'')

>> I am having problem with UNIQUE CONSTRAINT. I am trying to update a table and getting the violation error. Here is the over view. We have a table called Activity_Attendee. <<
Your problem is schema design. Singular table names tell us there is only one of them the set. Activities are one kind of entity; Attendees are a totally different kind of entity; Attendees are a totally different kind of entity. Where are those tables? Then
they can have a relationship which will be a third table with REFERENCES to the other two.
Your table is total garbage. Think about how absurd “attendee_type_code_id” is. You have never read a single thing about data modeling. An attribute can be “attendee_type”, “attendee_code” or “attendee_id”but not that horrible mess. I have used something like
this in one of my busk to demonstrate the wrong way to do RDBMS as a joke, but you did it for real. The postfix is called an attribute property in ISO-11179 standards.
You also do not know that RDBMS is not OO. We have keys and not OIDs; but bad programmers use the IDENTITY table property (NOT a column!), By definition, it cannot be a key; let me say that again, by definition.
>> ActivityAttendee has the following columns. The problem to debug is this table has over 23 million records [sic: rows are not records]<<
Where did you get “UNIQUE KEY” as syntax in SQL?? What math are you doing the attendee_id? That is the only reason to make it INTEGER. I will guess that you meant attendee_type and have not taken the time to create an abbreviation encoding it.
The term “patent/child” table is wrong! That was network databases, not RDBMS. We have referenced and referencing table. Totally different concept!
CREATE TABLE Attendees
(attendee_id CHAR(10) NOT NULL PRIMARY KEY,
attendee_type INTEGER NOT NULL --- bad design.
CHECK (attendee_type BETWEEN ?? AND ??),
email_address VARCHAR(255),
CREATE TABLE Activities
(activity_id CHAR(10) NOT NULL PRIMARY KEY,
Now the relationship table. I have to make a guess about the cardinally be 1:1, 1:m or n:m.
CREATE TABLE Attendance_Roster
(attendee_id CHAR(10) NOT NULL --- UNIQUE??
REFERENCES Attendees (attendee_id),
activity_id Activities CHAR(10) NOT NULL ---UNIQUE??
REFERENCES Activities (activity_id)
PRIMARY KEY (attendee_id, activity_id), --- wild guess!
>> UNIQUE KEY is on activity_id, attendee_type_code_id_value_category, object_id, email_address <<
Aside from the incorrect “UNIQUE KEY” syntax, think about having things like an email_address in a key. This is what we SQL people call a non-key attribute.
>> We have a requirement where we need to update the ObjectID. There is a new mapping where I dump that into a temp table #tempActivityMapping (intObjectID INTEGER NOT NULL, intNewObjectID INTEGER NULL) <<
Mapping?? We do not have that concept in RDBMS. Also putting meta data prefixes like “int_” is called a “tibble” and we SQL people laugh (or cry) when we see it.
Then you have old proprietary Sybase UODATE .. FROM .. syntax. Google it; it is flawed and will fail.
Please stop programming until you have a basic understanding of RDBMS versus OO and traditional file systems. Look at my credits; when I tell you, I think I have some authority.
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

How to delete the single record from the ODS

HI,
I want to DELETE the particular record from ODS.. how to delete that..
plz give me the solution.. it's urgent..
with regards
@jay

Hi Prakash,
You can delete a particular record from ODS by specifying the key field name in Selective deletion button available in Contents tab in the manage screen of ODS. But it will only delete the record from the active data table and not from the Change log and new data table . You should be very carefull if you are doing in Production system as there is chance of deleting other records accidentally.
Go to Selective deletion button - > Click on delete selection -> Enter the key field values of the record you want to delete-> Press save button to save as Variant -> Go back and click on selection button -> Chosse the background job type -> Click on start button.
Regards,
Prakash

Export specific records from all table? Please help me with my query

hi
there are around 200 tables, I want to take a export of all tables of xyz schema.
My requirement is just a few records of primary key and their relevant records from other tables to be exported by using exp or expdp utility.

Hi Toni...
Thanks for your reply.
Could you please help me understand how to user this expdp query...
and what exactly should i mention in the parfile. I want all relevant records from all tables of primary key. please help me to write a query accordingly.

Cannot create DDL for Unique Key

I have a relational model with a unique key constraint. When I go to Export -> DDL File for my model, and look at the PK and UK constraints tab for "DDL Generation Options", the UK is checked. But upon inspecting the generated DDL file, it is not being generated! The target database in Oracle 11.1 and I am using DM 4.0.3.853.

Hi,
Very strange. Is there anything unusual about the Table or its Unique Key column(s)?
Is everything else being generated as expected?
Are there any relevant error messages in the log? (You can use External Log on the View menu to display the log.)
David

Random Row From ResultSet

Hi, i need some help on this:
First, my JSP will query a database table and return a resultset that contains a lot of records. Is there a way to randomly choose ONE of the record from resultset ?
Number of records return by the resultset is dynamic (always change), so, is there a way to store all the records into array first?
Or do you have any other suggestions ?
Thank you !

Better way is to create a Bean for the row returned by the Result Set. For example your result set return 2 columns i.e. ID and Name then your bean should have getter and setter methods for the columns and repeating the loop for the Result set store each returned row in the bean and then store this bean in the Collection. This is better way to work with it.

Unique data record means you can't update a record from ECC with same key.

Unique data record means you can't update a record from ECC with same key fileds right?
Details: For example i have two requests Req1 and Req2 in DSO with unique data record setting checked. on day one Req1 has a filed quantity with value 10 in Active data table. On day two Req1 can not be overwitten from ECC with Req2 with the same key fields but different value 20 in the filed quantity because of the Unique data record settings. finally the delta load fails from ECC going to DSO because of this setting. is it right?
I think we can only use unique record setting going from DSO to cube right?
Please give me a simple scenario in which we can use this setting.
I already search the threads and will assign points only to valuable information.
Thanks in advance.
York

Hi Les,
Unique Data Records:
With the Unique Data Records indicator, you determine whether only unique data records are to be updated to the ODS object. This means that you cannot load a data record into the ODS object the key combination for which already exists in the system otherwise a termination occurs. Only use this setting when you are sure that only unique data records are to be loaded into the ODS object (for example, single documents). A typical application of this is in the loading of mass data. It improves the load performance.
Hope it Helps
Srini

ORA-00001:Unique Constraint while inserting 2 similar records from source

Hi,
in TEST1 there are records:
10 20 ABC
10 20 DEF
I amt trying to insert into TEST which has CODE as Primary Key.
declare
type cur is ref cursor;
cur_t cur;
type v_t is table of TEST%rowtype;
tab v_t;
v_act_cnt_str VARCHAR2(4000);
v_act_cnt NUMBER:=0;
BEGIN
v_act_cnt_str:=' SELECT COUNT(*) '||' FROM TEST '||' WHERE '||'('||CODE||')'||' IN '||'('||'SELECT '||CODE||' FROM TEST1'||')';
DBMS_OUTPUT.PUT_LINE('The Actual Count String is'||v_act_cnt_str);
EXECUTE IMMEDIATE v_act_cnt_str INTO v_act_cnt;
open cur_t for select * from TEST1 ORDER BY ROWNUM;
loop
fetch cur_t bulk collect into tab limit 10000;
if v_act_cnt=0 THEN
forall i in 1..tab.count
insert into TEST values tab(i);
commit;
ELSE
v_merge_act_str :=
'MERGE INTO TEST '||
' DEST' || ' USING TEST1 '||
' SRC' || ' ON (' || DEST.CODE=SRC.CODE || ')' ||
' WHEN MATCHED THEN ';
first_str := 'UPDATE ' || ' SET ' ||
'DEST.NAME=SRC.NAME,DEST.DEPT_NAME=SRC.DEPT_NAME;
execute immediate v_merge_act_str || first_str;
v_merge_act_str := '';
first_str := '';
commit;
END IF;
end loop;
END;
ITS GIVING ERROR as:
ORA-00001: unique constraint (PK_TEST1) violated
Any help will be needful for me
Edited by: user598986 on Sep 22, 2009 4:20 AM
Edited by: user598986 on Sep 22, 2009 4:22 AM

Your code makes absolutely no sense whatsover. The whole point of MERGE is that it allows us to conditionally apply records from a source table as inserts or updates to a target table. So why have you coded two separate statements? And why are you using such horrible dynamic SQL?
Sorry to unload on you, but you seem to have your code unnecessarily complicated, and that it turn makes it unnecessarily harder to debug. As an added "bonus" this approach will also perform considerably slower than a single MERGE statement. SQL is all about set operations. Don't do anything procedurally which can be done in a set.
Cheers, APC
blog: http://radiofreetooting.blogspot.com

Help needed to get unique record from an internal table

Hi Everybody,
I have to get unique record from an internal table. i know we can use read statement with key condition .
But the problem is i have to use some relational operators like GE or LE.
eg
read table itab into wa with key width GE itab-widthfrom
                                                   width LE itab-widthto
                                                   machno eq itab-machno.
Its giving me error when I use the operators GE , LE.( I think since it can't find a unique record with those relational
operators in the with key statement)
Is there any other way to get unique record from internal table without using the loop?
Thanks,
Sunny

Using the read statement you will need some kind of loop. For example.
DO.
READ TABLE......
WITH KEY ......
                    READ = SPACE
IF SY-SUBRC EQ 0
TABLE-READ = 'X'.
MODIFY TABLE
ADD 1 TO W_FOUND.
ELSE
EXIT.
ENDIF
ENDDO.
IF W_FOUND EQ 1.
...record is unique.
ENDIF.

How can I run a check for a record across other records in the same dataset based on unique key constraint?

Dear community,
I have a flat data set which I run through a lookup and return. I want to check if at least one of the records matching a unique key constraint had a successful return without merging all the records. Can some one point me in the right direction?
Thanks!
Marc

Hi,
Sounds like a job for the Lookup Check processor!
As with all check processors, it adds a flag attribute (with a Y/N value) that denotes if the lookup was successful or not, as well as filtering records based on this at output.
Lookup Check does the same as Lookup and Return but does not return the record(s) looked up.
Also note that Lookup and Return does not actually merge records, but it does pull back the return data (which you can then split if you want a record for each).
Regards,
Mike

Null Values in a unique key in a Merge????

We have OWB 9.2.0.2.8 and Oracle 9i
I have a Mapping with a Source table (A), a Target table (B) and an Insert/Update Loading Type.
I make a Match by constraint with a âunique keyâ in the Target table with two Fields: Field1 and Field2
The problem is the Field2 could be NULL then If I have In TABLE A (Field1: XXX and Field2: NULL) and in TABLE B (Field1: XXX and Field2: NULL) it donât match because Field2 has NULL value and the INSERT fails.
I need to use a NVL function. For example:
UPDATE
â¦.
â¦.
â¦.
Where nvl(A.Field2,â*â) = nvl(B.Field2,â*â)
I could create a NVL to TABLE A (Source) with a âExpression objectâ but How can I create a NVL to TABLE B.
I need to generate the nvl(B.Field2,â*â) part of the instruction nvl(A.Field2,â*â) = nvl(B.Field2,â*â).
How can I do it???
Thanks very much!

Hi Claudio,
well, I have an solution although it is neither nice nor clean...
* Add a column Field2_notnull to Table B with not null-constraint and same type as Field2
* Add a check-constraint to Table B like this: "nvl(Field2,'*') = Field2_notnull"
* Create a UNIQUE KEY on Table B's Field1 and Field2_notnull and use this constraint for the MERGE-Load (INSERT/UPDATE)
* Coming from Table A, use Field1 and nvl(Field2,'*') for the match
As I said, neither nice nor clean, but it works, as long as you can manage to fill Field2_notnull in Table B correctly.
Best regards
Andreas

Merge records from resultset by its unique key

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