How to compare two fields in two seperate databases

Hi
Can we compare two columns in two separate databases with a one script.
Cheers
Shabar

Hi,
if you mean Oracle to sqlserver then you would have to put hand in pocket and buy ODBC connectivity for this...
If it is just a one off maybe export your data and import into Oracle table and do your one off comparision.
regards,
Robert.

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this data. Hoping for your help. Thanks.

it is better to comapre it using java.. try get the resultset first and store that in collections then comapre the two collections

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I faced a similar problem in one of my projects and hence wrote my own comparator. Most comparators like ExamXML etc show XML as different if the nodes under a parent node occur in different seqeunce or a set of repeated nodes occur in different sequence. The comparator that I wrote gives you the flexibility to configure how to identify a node from a set of repeated nodes and is able to compare them successfully if they occur in any order. You can view the sample output at http://geocities.com/dheerendra_itbhu/TipsFromDheeru.html
and contact me in case you need the source code.

How to get different field in two are more different table using open sql

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          This SenthilMani am very new into sap abap am having doubt in reports how get the different fields from different tables like mara,marc,mard using open sql and native sql program give me some tips to get the data .
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senthil

HI ,
1) If u want to select data from more the two table then u can use FOR ALL ENTRIES.
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                   select matnr from mara into table t_mara.
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I am new to PL/SQL. I need to write a procedure to calculate the difference between two columns of two seperate tables. For example:
I have Table a and Table b. Both with two columns Id and Amount. I need to find the difference of Amount between table a and table b value for each record in table b, store it in variable and then do further operations using that difference. Kindly help me with this.

Something like this?
INSERT INTO table_c (id, diff, p_or_n)
SELECT
a.a_id,
a.a_value - b.b_value
DECODE( SIGN(a.a_value - b.b_value),
1 , 'P',
0 , 'P',
-1, 'N'
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ON (a.a_id = b.b_id);
-- Ranit

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good
there is two kinds of evernt
PROCESS ON HELP-REQUEST
PROCESS ON VALUE-REQUEST.
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go through this link
http://help.sap.com/saphelp_nw2004s/helpdata/en/47/e07f622b9911d2954f0000e8353423/content.htm
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How to compare two fields from two different groups

My RTF template is like this.
GROUP A
Field 1 Field 2 Field 3 (Display in table)
GROUP B
**Condition
Display Fields from B
end GROUP B
end GROUP A
But I need the following condition to be added at the place (** Condition)
IF A.Field1 = B.Field1
Display fields from B
END IF
end Group B
end Group A
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You can use variables to store the A.field1 value and then compare it against B.Field1.
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Generate delta records by comparing multiple fields from two tables?

I have two tables with similar fields. Let's say Table 1 (T1) has fields Customer, A, B and C. Table 2 (T2) has fields Customer0002, A0002, B0002 and C0002. For each customer (each record) I want to check whether there is any difference in field A and A0002 or B and B0002 or C and C0002. If there is a difference between any of these pairs of fields then I will update that customer's record. Currently I have a piece of code
   DATA: ls_source TYPE y_source_fields,
        ls_target TYPE y_target_fields.
LOOP AT it_source INTO ls_source.
    if not ( ls_source-A = ls_source-A0002 ).
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    endif.
ENDLOOP.
This checks for the difference between one pair - A and A0002. How can I make it check 3 pairs and update when any of them have differences?

Hello Khaled
Why don't you add B and B0002 - C and C0002 fields into your if declaration?
LOOP AT it_source INTO ls_source.
    if not (
ls_source-A = ls_source-A0002 and
ls_source-B = ls_source-B0002 and
ls_source-C = ls_source-C0002
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      APPEND ls_target TO et_target.
    endif.
ENDLOOP.
I think you have more than 3 fields and the count of these fields are dynamic right?
Do you about the ASSIGN COMPONENT x OF STRUCTURE y TO <field_symbol>. usage?
Can you explain your need in detail please.
Edited by: Bulent Balci on Jul 27, 2010 4:18 PM

How to Compare pdf contents of two pdfs?

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Hi,
i am in need of simple sql script where i can compare two table record count.
i have something like below:
(select count(*) from table1) minus (select count(*) from table2)
now the problem is if the table1 count greater then table2 count the output is fine.
If the table2 record count is more then i am getting zero as the output.
how can i get the difference in two tables record count?
Thanks a lot in advance.
--Raman.

Doing a MINUS between the counts does not yield the diff.
e.g. if table A has 100 records and table B has 70 records then,
SELECT count(*) FROM A
minus
SELECT count(*) from B
will give 100 and not 30.
Try this:
SELECT (
CASE WHEN ((select count(*) cnt from A) - (select count(*) cnt from B)) <0
THEN ((select count(*) cnt from A) - (select count(*) cnt from B))* -1
ELSE ((select count(*) cnt from A) - (select count(*) cnt from B)) END) Difference
FROM dualor this is simpler
SELECT abs(((select count(*) cnt from A) - (select count(*) cnt from B))) difference FROM dualEdited by: Caitanya on Jan 9, 2009 7:12 AM
Applied abs function after seeing BluShadow's post :)

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My requirement is to compare two identical tables(eg., t1 and t2) and display the column, which value got changed, old value and its new value.
For eg:
T1:
StudId C1 C2 C3
1 40 50 90
2 30 80 100
3 20 10 11
T2:
StudId C1 C2 C3
1 100 60 90
2 30 90 100
3 20 60 80
output should be:
StudId Column prevvalue changedvalue
1 C1 40 100
1 C2 50 60
2 C2 80 90
3 C2 10 60
3 C3 11 80
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No need of PL/SQL, you can do it in SQL as shown
SQL> create table t1
2 (
3 studentId number,
4 c1 number,
5 c2 number,
6 c3 number
7 );
Table created
SQL> insert into t1 values (1,40,50,90);
1 row inserted
SQL> insert into t1 values (2,30,80,100);
1 row inserted
SQL> insert into t1 values (3,20,10,11);
1 row inserted
SQL> commit;
Commit complete
SQL> create table t2
2 (
3 studentId number,
4 c1 number,
5 c2 number,
6 c3 number
7 );
Table created
SQL> insert into t2 values (1,100,60,90);
1 row inserted
SQL> insert into t2 values (2,30,90,100);
1 row inserted
SQL> insert into t2 values (3,20,60,80);
1 row inserted
SQL> commit;
Commit complete
SQL> select * from t1;
STUDENTID         C1         C2         C3
         1         40         50         90
         2         30         80        100
         3         20         10         11
SQL> select * from t2;
STUDENTID         C1         C2         C3
         1        100         60         90
         2         30         90        100
         3         20         60         80
SQL> select
2 t1.studentId StudId,'c1' ColumnName,t1.c1 prevvalue,t2.c1 changedvalue
3 from t1,t2
4 where t1.studentId = t2.studentId and
5 t1.c1 <> t2.c1
6 union
7 select
8 t1.studentId,'c2',t1.c2,t2.c2
9 from t1,t2
10 where t1.studentId = t2.studentId and
11 t1.c2 <> t2.c2
12 union
13 select
14 t1.studentId,'c3',t1.c3,t2.c3
15 from t1,t2
16 where t1.studentId = t2.studentId and
17 t1.c3 <> t2.c3
18 ;
    STUDID COLUMNNAME PREVVALUE CHANGEDVALUE
         1 c1                 40          100
         1 c2                 50           60
         2 c2                 80           90
         3 c2                 10           60
         3 c3                 11           80
SQL>

How do I link fields on two different sheets? What I am trying to do is enter data on one sheet and at the same time in is entered on a second and sometimes third sheet at the same time

PLEASE FORGIVE ME THIS IS THE FIRST TIME I AM USING THIS
1) How do I get data entered into 2 or 3 fields on different sheets all at the same time?

Hi David,
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Ian.

How to compare pixel values of two different grayscale images...

I have two different grayscale images both of much different sizes. One is 46x20 pixels and the other is 2592x1944 pixels. I'm having trouble finding a way to "scan" the smaller image through the larger one so that comparisons between the pixel values can be made. Basically I'm trying to see if anything matches the smaller image in the big image semi-closely. I can access the pixel values of each image but I can't figure out an algorithm to perform the scan. Any help at all would be very much appreciated! Thanks.

Hi
recipe:
1.
Find all the values for all the pixels in the small image. Some might be similar. Put all those values that are useful into a List called comparisonList.
2.
For each scanline in the large image
For each pixel in the scanline
is this pixel the same value as a pixel in the comparisonList?
if so do something
is the scanline finished?
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my 2c
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How to find common fields between two tables

Hi friends,
Is there any way to find out common fields between tables and linking the tables based on common fields.
Thanks and Regards,
Chitty.

Hi Chitty,
Try using joins it will give the fields which are only common to both the fields.
Here s an example,
SELECT mara~matnr
       marc~werks
INTO   TABLE t_material
FROM   mara AS mara INNER JOIN marc AS marc
ON     maramatnr = marcmatnr
WHERE mara~mtart = p_mtart.
Much Regards,
Amuktha.

How to compare two fields in two seperate databases

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