To fetch ALTERNATE records from a table. (EVEN NUMBERED)

suppose i having tABle employee columns empid,empname ,emplocation it having 20 rows and i want to fetch 10 records which are even how to write query
jitendra

it was interview question
Then you ask back to the interview: what do you mean with even rows? In a relational database there is no inherit number for a row. In fact a table is by definition an unordered set. Of course, we can extract only the even empid:s, but there is no guarantee
that there is exactly ten of them. Chance could have it that all empids are odd.
If the interviewer insists you can say that we can always run a query with row_number, but that frankly does not make any sense.
If nothing else, this sort of response may reveal what sort of interviewer you are talking to. Is is exactly as clueless as the question suggest? Or is he purposely asking you a stupid question to see if you are smart enough to call his bluff?
I don't know about interviews in general, but if I were interviewing people, I would certainly be impressed by someone who has the guts to object and come with sound objections. That is exactly the kind of people I want to work with.
Erland Sommarskog, SQL Server MVP, [email protected]

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Fetch last record from database table

hi,
how to fetch last record from database table.
plz reply earliest.
Regards,
Jyotsna
Moderator message - Please search before asking - post locked
Edited by: Rob Burbank on Dec 11, 2009 9:44 AM

abhi,
just imagine the table to be BSEG or FAGLFLEXA... then what would be performance of the code ?
any ways,
jyotsna, first check if you have a pattern to follow like if the primary key field have a increasing number range or it would be great if you find a date field which stores the inserted date or some thing..
you can select max or that field or order by descending using select single.
or get all data.. sort in descending order.(again you need some criteria like date).
read the first entry. using read itab index 1

Issue with fetching a record from IHPA table with PARNR value as condition

Hi All,
I am trying to fetch a particular record from IHPA table where i am giving the OBJNR number, PARVW and PARNR as customer no. , But I am not getting any record but if i will give OBJNR and PARVW it will generate a record with having same PARNR value.
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when i am passing following values in IHPA table,
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VCKUN
VCNUM ?
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Hi Santosh,
Thanks for your quick response.
But I am Sorry, I already checked with putting Zero before PARNR.
The issue is still as it is.
Thanks
Shaw

How to fetch corresponding records from 2 tables using ADF Toplink & EJB

Hi,
I am unable to fetch records from 2 tables, which has a foregin key.Used the custom query in toplink, But the output is the cartition of the first table draged and the first row of the second table.The output required should be in the form of ADF Table. I am able to find the output in JSF data table.
Two tables:
Table name:Solutions
sol_id varchar2(PK)
sol_name varchar2
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sol_id varchar2(FK)
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common_detail varchar2
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sol_id,sol_name,common_asum_id,common_detail
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SELECT * FROM solutions a
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WHERE a.sol_id=b.sol_id

Hi,
I am unable to fetch records from 2 tables, which has a foregin key.Used the custom query in toplink, But the output is the cartition of the first table draged and the first row of the second table.The output required should be in the form of ADF Table. I am able to find the output in JSF data table.
Two tables:
Table name:Solutions
sol_id varchar2(PK)
sol_name varchar2
Table name:Solution_details
sol_id varchar2(FK)
common_asum_id varchar2(PK)
common_detail varchar2
Output Required:
sol_id,sol_name,common_asum_id,common_detail
Custom query:
SELECT * FROM solutions a
,solution_details b
WHERE a.sol_id=b.sol_id

Need help for SQL SELECT query to fetch XML records from Oracle tables having CLOB field

Hello,
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Table structures are mentioned below:
OP:
Name                             Null                    Type
OP_NBR                    NOT NULL      NUMBER(4)    (Primary Key)
OP_DESC                                        VARCHAR2(50)
OP_PAYLOD_XML                           CLOB
GM:
Name                          Null                   Type
GM_NBR                  NOT NULL       NUMBER(4)    (Primary Key)
GM_DESC                                       VARCHAR2(40)
OP_NBR               NOT NULL          NUMBER(4)    (Foreign Key)
GM_PAYLOD_XML                          CLOB
DM:
Name                          Null                    Type
DM_NBR                  NOT NULL         NUMBER(4)    (Primary Key)
DM_DESC                                         VARCHAR2(40)
GM_NBR                  NOT NULL         NUMBER(4)    (Foreign Key)
DM_PAYLOD_XML                            CLOB
DE:
Name                          Null                    Type
DE_NBR                     NOT NULL           NUMBER(4)    (Primary Key)
DE_DESC                   NOT NULL           VARCHAR2(40)
DM_NBR                    NOT NULL           NUMBER(4)    (Foreign Key)
DE_PAYLOD_XML                                CLOB
+++++++++++++++++++++++++++++++++++++++++++++++++++++
SELECT
j.op_nbr||'||'||j.op_desc||'||'||j.op_paylod_xml AS op_paylod_xml,
i.gm_nbr||'||'||i.gm_desc||'||'||i.gm_paylod_xml AS gm_paylod_xml,
h.dm_nbr||'||'||h.dm_desc||'||'||h.dm_paylod_xml AS dm_paylod_xml,
g.de_nbr||'||'||g.de_desc||'||'||g.de_paylod_xml AS de_paylod_xml,
FROM
DE g, DM h, GM i, OP j
WHERE
h.dm_nbr = g.dm_nbr(+) and
i.gm_nbr = h.gm_nbr(+) and
j.op_nbr = i.op_nbr(+)
+++++++++++++++++++++++++++++++++++++++++++++++++++++
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Current O/P:
<resultSet>
     <Record1>
          <OP_PAYLOD_XML1>
          <GM_PAYLOD_XML1>
          <DM_PAYLOD_XML1>
          <DE_PAYLOD_XML1>
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     <Record2>
          <OP_PAYLOD_XML2>
          <GM_PAYLOD_XML2>
          <DM_PAYLOD_XML2>
          <DE_PAYLOD_XML2>
     </Record2>
     <RecordN>
          <OP_PAYLOD_XMLN>
          <GM_PAYLOD_XMLN>
          <DM_PAYLOD_XMLN>
          <DE_PAYLOD_XMLN>
     </RecordN>
</resultSet>
Now i want to change my SQL query so that i get following output structure:
<resultSet>
     <Record>
          <OP_PAYLOD_XML1>
          <GM_PAYLOD_XML1>
          <GM_PAYLOD_XML2> .......
          <GM_PAYLOD_XMLN>
          <DM_PAYLOD_XML1>
          <DM_PAYLOD_XML2> .......
          <DM_PAYLOD_XMLN>
          <DE_PAYLOD_XML1>
          <DE_PAYLOD_XML2> .......
          <DE_PAYLOD_XMLN>
     </Record>
     <Record>
          <OP_PAYLOD_XML2>
          <GM_PAYLOD_XML1'>
          <GM_PAYLOD_XML2'> .......
          <GM_PAYLOD_XMLN'>
          <DM_PAYLOD_XML1'>
          <DM_PAYLOD_XML2'> .......
          <DM_PAYLOD_XMLN'>
          <DE_PAYLOD_XML1'>
          <DE_PAYLOD_XML2'> .......
          <DE_PAYLOD_XMLN'>
     </Record>
<resultSet>
Appreciate your help in this regard!

Hi,
A few questions :
How's your first query supposed to give you an XML output like you show ?
Is there something you're not telling us?
What's the content of, for example, <OP_PAYLOD_XML1> ?
I don't think it's a good idea to embed the node level in the tag name, it would make much sense to expose that as an attribute.
What's the db version BTW?

How to fetch last record from the table to display in screen painter?

Hi Gurus,
              I have a requirement where i have to fetch the last record value in the table.
I have a screen where the TEXT name is REQUEST and I/P field name is REQ and SAVE push button.
In this I/P field automatically 1 should display when i excecute the program and when i save this, the request number should turn to 2 that is dynamically..once agin save then 3 and so on....and this 1, 2, 3 will be storeing in table.
I have succeeded till generating the values dynamically and saving in the table like 1 is displayed and when i click save it is changeing to 2..but the problem is when i am coming out of program and logon again the request number is again displaying as 1 rather it has to start with 4 because already 3 request are there in the table.
My code is...
Table zsave.
data declarations....
data req type i.
req = 0.
req = zsave-req.
PROCESS BEFORE OUTPUT
req = 0.
select req into table fun_st from zsave.
req = zsave-req.
zsave-req = req.
req = zsave-req + 1.
PAI
req = zsave-req + 1.
zsave-req = req.
when 'save'.
wa_funst-req = zsave-req.
Please can you provide me with the solution....answer will be rewared.
THKS

Can you tell me, when updaing the ZSAVE table with the counter value are you modifying the exisiting value or inserting the value as new record?
From the code in your first post, i see that you are extracting records into internal table but when you are moving to variable REQ, you are moving from table work area which is blank, so everytime when you execute it may be starting as 0.
Hope below code can help you understand on handling your requirement
Global Declaration:
>DATA: l_req TYPE i.
PBO:
SELECT MAX( req ) INTO l_req FROM zsave.
l_req = l_req + 1.
PAI:
DATA: wa TYPE zsave.
CASE ucomm.
WHEN 'SAVE'.
    wa-req = l_req.
    INSERT zsave FROM wa.
ENDCASE.

How to fetch previous record from internal table?

Hi,
My final internal table (it_final) has all the data month wise year wise.(opening and closing qty)
but if
Material   Batch    Month   Year        opening_qty         closing_qty
FC5431   abc        08        2008        100                       50
FC5431   ABC       09        2009         0                          100
Suppose I want to take PREVIOUS record(closing_qty = 50 in my 09/2009 openin_qty = 50) how will Ido this?
Any solution????????? BTW i m using S033 for opening an closing qt monthwise.
Plz reply soon if anyone knows.
Thanks and Regards,
Archana

Hi,
Test the following Sample code hope will solve out your problem,
TYPES: BEGIN OF ty_test,
        m(3),
        open_qty TYPE i,
        close_qty TYPE i,
        END OF ty_test.
DATA: it_test TYPE STANDARD TABLE OF ty_test WITH HEADER LINE,
      wa_test LIKE LINE OF it_test,
      ctabix LIKE sy-tabix,
      ptabix LIKE sy-tabix.
it_test-m = 'AAA'. it_test-open_qty = 100. it_test-close_qty = 50. append it_test.
it_test-m = 'AAA'. it_test-open_qty = 0. it_test-close_qty = 100. append it_test.
LOOP AT it_test.
ctabix = sy-tabix.
IF sy-tabix > 1.
    ptabix = sy-tabix - 1.
    READ TABLE it_test into wa_test INDEX ptabix.
    IF sy-subrc = 0.
      it_test-open_qty = wa_test-close_qty.
    ENDIF.
    MODIFY it_test INDEX ctabix.
ENDIF.
ENDLOOP.
LOOP AT it_test.
WRITE: it_test-m, it_test-open_qty, it_test-close_qty, /.
ENDLOOP.
Regards,
Faisal

Matching records from two tables even when the ID of a person is null.

I have a MySQL named Natural Systems which is a magazine account that it member's will both sell handmade items wherein the proceeds will go into the Natural Systems account and each member also give a weekly donation. All of the proceeds will help toward the printing of the subsequent volumes. both of the selling of handmade items and the weekly dues happens during the same week or the same magazine volume number. I am trying to write a query that will pull both of the sales as well as the weekly dues payments weather they have paid or not.
SELECT foiid, trim(concat(name.fname,' ',name.lname)) AS no_ns, nspayamt, DATE_FORMAT(nspaydate, '%m/%d/%Y') FROM name LEFT JOIN nspay ON nspayfoiid = foiid and volume = '27' WHERE nspayfoiid is null AND type = 'Registered' AND city = 'richmond' AND status = 'a' group by foiid ORDER BY no_ns
This code will bring up the following names of those who did not pay weekly dues during volume 2:
Christopher Gabb
Michael banks
Timothy Hardin
However there is another table I wish to call the same Individuals who sold magazine during the same week of volume 27
SELECT trim(CONCAT(name.fname,' ',name.lname))AS Sold,
round(sum(fcnsales.salesamt)) as TOTAL_Mags_SOLD FROM name, fcnsales WHERE fcnsales.salesfoiid = name.foiid
AND fcnsales.salesvolume '27' GROUP BY name.foiid ORDER BY TOTAL_mags_SOLD desc;
This above code produces the following results:
Sold                             TOTAL_Mags_SOLD
Christopher Gabb        50
Michael banks             36
Timothy Hardin           12
I would like to combine the two queries to produce the following
Sold                             TOTAL_Mags_SOLD   nspayamt
Christopher Gabb          50                                none
Michael banks               36                                none
Timothy Hardin            12                               none
can anyone give me a direction to go to?

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 ;

Processing some records from internal table.

Hi,
My internal table contains material in lakhs.After fetching the record from database table MARA,i process each material to find out its characteristics.As there are too much records it is taking time, resulting in time out error abap dump. If i want to process first 5000 material then remaining 5000 and so on...what logic should i apply?or can there be any alternative solution?

Hi,
You can also check if the read statement has BInary Serach.
By Adding this it will improve performance.
Read statement will occupy lots of time to read the records.
Sort the Internal table with some key field and the use Binary Search for an internal table.
Ex :
SORT T_PRGEN by ATTR20A.
READ TABLE T_V_TCAV201 INTO WA_V_TCAV201 WITH KEY ATTRV20 = WA_PRGEN-ATTR20A BINARY SEARCH.
This should fix the issue.
Regards,
Kittu

Sender JDBC Adapter : Fetch records from multiple tables

Hi Friends,
I am using sender JDBC adapter to select few records from DB2 database table.
This scenario is working fine.
Now my requirement is to fetch records from 3 tables. These table are independent to each other. There is no primary key or foreign key.
Please let me know how to write the sql in sender JDBC adapter to fetch records from these 3 tables.
Thanks,
Sandeep Maurya

hi sandeep...
if the tables are completely independent and do not share any primary / foreign key relation ship...
why dont u think towards creating a seperate interface for each of them..
or if u still want to select from multiple table at once..the best way would be to write a stored procedure on the sender side which do all the fetching n processing and pass the final resultset to PI
or u can think towards fetching the data from 1 table and then in UDF do lookup from other tables..which again is tricky and performace intensive

How can i fetch records from 3 tables in a single query without using join

Hi.
Can any body please tell me <b>How can i fetch records from 3 tables with a single query without using joins</b>
Thanx
prabhudutta

Hi Prabgudutta,
We can fetch the data by using the views concept.
Go throuth this info we can know the how to create view and same like database table only we can fetch the data.
Views conatin the data at runtime only.
Four different view types are supported. These differ in the
way in which the view is implemented and in the methods
permitted for accessing the view data.
Database views are implemented with an equivalent view on
the database.
Projection views are used to hide fields of a table (only
projection).
Help views can be used as selection method in search helps.
Maintenance views permit you to maintain the data
distributed
on several tables for one application object at one time.
step by step creation of Maintenance view:
With the help of the table maintenance generator, you are able to maintain the ENTRIES of the table in SM30 transaction.
It can be set in transaction SE11 - Tools - Table maintenance generator.
Table maintanance Generator is used to manually input values using transaction sm30
follow below steps
1) go to se11 check table maintanance check box under attributes tab
2) utilities-table maintanance Generator-> create function group and assign it under
function group input box. Also assign authorization group default &NC& .
3) select standard recording routine radio in table table mainitainence generator to move table
contents to quality and production by assigning it to request.
4) select maintaience type as single step.
5) maintainence screen as system generated numbers this dialog box appears when you click on create button
6) save and activate table
One step, two step in Table Maintenance Generator
Single step: Only overview screen is created i.e. the Table Maintenance Program will have only one screen where you can add, delete or edit records.
Two step: Two screens namely the overview screen and Single screen are created. The user can see the key fields in the first screen and can further go on to edit further details.
SM30 is used for table maintenance(addition or deletion of records),
For all the tables in SE11 for which Table maintenance is selected , they can be maintained in SM30
Sm30 is used to maintain the table ,i.e to delete ,insert or modify the field values and all..
It creates the maintenance screen for u for the aprticular table as the maintenance is not allowed for the table..
In the SE11 delivery and maintenance tab, keep the maintenance allowed..
Then come to the SM30 and then enter the table name and press maintain..,
Give the authorization group if necessary and give the function group and then select maintenance type as one step and give the screen numbers as system specified..
Then create,,,
Then u will able to see the maintenance view for the table in which u can able to insert and delete the table values...
We use SM30 transaction for entering values into any DB table.
First we create a table in SE11 and create the table maintenance generator for that Table using (utilities-> table maintenance generator) and create it.
Then it will create a View.
After that from SM30, enter the table name and Maintain, create new entries, change the existing entries for that table.
Hope this resolves your query.
Reward all the helpful answers.
Rgds,
P.Naganjana Reddy

Fetch the records from cache

say i have emp table
eno ename sales
1 david 1100
2 lara 200
3 james 1000
1 david 1200
2 lara 5400
4 white 890
3 james 7500
1 david 1313
eno can be duplicate
when i give empno is 1
i want to display his sales i.e 1100,1200,1313
first time i will go to database and fetch the records
but next time onwards i dont go to database; i will fetch the records from cache;
i thought doing it using hashmap or hasptable ;both those two don't allow duplicate values(empno has duplicate values);
How to solve this problem.

Hi,
Ever considered splitting that table up. You are thinking about caching thats a
very good idea. But doesnt it make it vary evident that the table staructure that you have
keeps a lot of redundant data. Specially it hardly makes a sense to have sales
figures in a emp table. Instead you can have Emp table containing eno and
ename with eno as the primary key and have another table called sales with eno
and sales columns and in this case the eno references the Emp table.
If you still want to continue with this structure then I think you can go ahead with
the solution already suggested to you
Aviroop

To delete duplicate records from internal table

hi friends,
i have to delete records from internal table based on following criterion.
total fields are 7.
out of which if 4 fields are same and 5th field is different,then both records must be deleted.
in case all five fields are same,the program should do nothing.
for example.
if there are 3 records as follows
a1 b1 c1 d1 e1 f g
a1 b1 c1 d1 e2 w r
a1 b1 c1 d1 e1 j l
then first two records should be deleted as four fields are same but fifth(e) field differs.
but third record should remain as it is evenif first five fields are same for first and third record.
values of last two fields need not to be consider for deleting the records.

LOOP AT ITAB.
V_FILED5 = ITAB-F5. "to compare later
V_TABIX = SY-TABIX. "used to delete if condition not matches
READ TABLE ITAB WITH KEY F1 = ITAB-F1
                           F2 = ITAB-F2
                           F3 = ITAB-F3
                           F4 = ITAB-F4.
IF SY-SUBRC = 0.
    IF ITAB-F5 <> V_FIELD5.
*--both the records to be deleted,as Field5 is different.
      DELETE ITAB INDEX SY-TABIX. "deletes that record
      DELETE ITAB INDEX V_TABIX. "deletes the current record
    ENDIF.
ENDIF.
ENDLOOP.
Message was edited by: Srikanth Kidambi
added comments
Message was edited by: Srikanth Kidambi

Need to fetch random rownum from a table

Hi All
I need to fetch two random records from a table each time I query it. e.g. my_emp_table if this contains unique employee ids, is there any way to write a query which would give a two random employee records, say for first run 11 and 18 and next time 20 and 28 employee record.
We can get random values by select TRUNC(dbms_random.value(1,250)), TRUNC(dbms_random.value(1,250)) num from dual
but how do I use these values to get the Nth record using sql?
Any help will be appreciated.
Many Thanks!!
- Shashank

Looks like this what you are looking for,
WITH result
     AS (SELECT       LEVEL id, ROWNUM rn
               FROM   DUAL
         CONNECT BY   LEVEL <= 10),
     required
     AS (SELECT       TRUNC (DBMS_RANDOM.VALUE ( 1, 10)) rn
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         CONNECT BY   LEVEL <= 2)
SELECT   *
FROM   result a, required b
WHERE   a.rn = b.rnG.

Comparing two records from different tables error.

Hi folks!
I have this PL/SQL Block.
I want to compare the only one record from both tables to see if the content of them are equal or not, but I don't want to specified column by column to do that.
Any idea?
Thanks a lot in advanced,
Abdel E. Miranda S.
Panama
declare
cursor c_aems_prueba is
select nombre, direccion, telefono, limite, seq
     from aems_prueba;
cursor c_aems_testing is
select nombre, direccion, telefono, limite, seq
     from aems_testing;
vc_aems_prueba c_aems_prueba%rowtype;
vc_aems_testing c_aems_testing%rowtype;
vt_aems_prueba aems_prueba%rowtype;
vt_aems_testing aems_testing%rowtype;
begin
insert into aems_prueba
values('ABDEL MIRANDA', 'PAITILLA', '215-3411', 1000, 1);
insert into aems_testing
values('ABDEL MIRANDA', 'PAITILLA', '215-3411', 1000, 1);
commit;
open c_aems_prueba;
fetch c_aems_prueba into vt_aems_prueba;
open c_aems_prueba;
fetch c_aems_prueba into vt_aems_testing;
if vt_aems_prueba = vt_aems_prueba
then
     dbms_output.put_line('son iguales las variables, si funciona la comparacion de dos estructuras');
     else
     dbms_output.put_line('no son iguales las variables, no funciona la comparacion de dos estructuras');
end if;
close c_aems_prueba;
close c_aems_testing;
end;

Satyaki De,
Java is involving because an Outsourcing new project. The outsourcing company is developing the new application using JSF which invoke an interface java method [depending of the operation: select, update, insert] and them invoke the PLSQL API to precess tha operation.
In the case I already wrote here, the issue is this:
The user search for a specific data using the interface. The java method send a request for these operation through the API. the PLSQL process the request and return a beam, with all the column the user look for.
The user see the information in the application windows. Assuming the user wants to change some data, he modify just one field [lets say telephone number] and press the update button. The application process the request using a different method, which invoke a different function within the PLSQL API.
Once the information is returning to the API, I must know if at least one field change its value. So I was thinking to get the beam with the data before it was changed and compare it with the beam with the changing data.
If current_beam = new_beam
then
update
else
no change to process
end if;
Any idea.

To fetch ALTERNATE records from a table. (EVEN NUMBERED)

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