Help required in SQL Loader

Is it possible to load a single target file from multiple flat file sequentially using SQL Loader?
Example -
Table structure -
<Emp_id><Emp_Name><Dept_id><Total_sales><Commission>
<Emp_id><Emp_Name><Dept_id> column will be load from Emp_master flat file
<Total_sales> column will be load from sales flat file - there will be two fields emp_id and total_sales
<Commission> column will be load from commission flat file - there will be two fields emp_id and commission.
I have tried this to merge these three flat file and create a single flat file, but in my real requirement i found it is quite tedious.
Is there any other approach?
Thanks in Advance

You can load into 3 temporary tables and insert into main table using a query
OR
You can use shell script (I hope UNIX environment) to merge the files
There is no direct way to load the data for same row from multiple files using SQL * Loader

Similar Messages

Need help to run sql loader from Form6i

Hi All,
I have some problem with the sql loader running from form 6i.
I have done following steps for that.
1. have created bat file to run sql loader.
2.Alos created ctl and txt files inside the same folder.
In the form , in button press i have written below code
HOST('cmd /c C:\load1.bat > C:\output.txt');
But it is giving error as -
"Unable to open Load1.ctl."
but i have run that bat files from command prompt ; and it is running fine.
I guess probably it is not getting the correct path.
Will pls help me, wt exacly I'm doing wrong?
Rg,
Subir

Hi Francois,
Thanks for reply.
It is not a problem with the batch files. Coz, I just able to run batch files, but that is not correct solution.
Once the host command id firing, that time it is going to path -
"c:\orant\Form60\"
And in this path it searching for that batch files and all the require files; but the require files are present in some different folder. So i think I need to change the path as well, but that I'm unable to do.
To resolve the problem, I have copied all the files in "c:\orant\Form60\" folder, and then it is working.
So I think I need to changed the path, so how to change the path. If I able to change the path I think it will worked. How to change the path?
Best Rg,
Subir

Help needed in SQL Loader

Hi,
Am using SQL Loader to insert rows in a table.
I have 5 cols in table A. But the data is not present in all cols always.
Have used TRAILING NULLCOLS but with no help.. few rows are inserted and for many others it throws "ORA-01841: (full) year must be between -4713 and +9999, and not be 0" error
(because the value is null in that particular column position)
How do I handle such cases.Please help asap.
FYI -
CONTROL FILE
load data
infile '/home/krkanth/test_spam_20070513.dat'
BADFILE 'sample.bad'
DISCARDFILE 'sample.dsc'
into table spam_rule_stats
fields terminated by "\t"
optionally enclosed by '"'
TRAILING NULLCOLS
(MAIL_DATE date 'yyyymmdd hh24:mi:ss', METRIC_TYPE, HEURISTIC_TYPE, HEURISTIC_VALUE, REJECTION_COUNT,
RULE_START_DATE DATE 'yyyymmdd hh24:mi:ss',
RULE_END_DATE date 'yyyymmdd hh24:mi:ss',SOURCE)
Am getting error Rejected - Error on table SPAM_RULE_STATS, column RULE_END_DATE.
ORA-01841: (full) year must be between -4713 and +9999, and not be 0
SAMPLE DATA
20070513 RULE SENDER [email protected] 534 20070214 22:02:56
SnA_ALERTS
20070513 RULE SENDER [email protected] 6 20070503 21:19:36 200
70518 21:19:36 RULE_EXTENSIONS
20070513 RULE SENDER [email protected] 519 20061105 05:40:44 SnA
_ALERTS
20070513 RULE SENDER [email protected] 332 20070509 02:44:51 20070524 02
:44:51 JASD_HP_AUTOREJECT
20070513 RULE SENDER [email protected] 928 20070512 14:49:14 20070527 14:49:14 JAS
D_HP_AUTOREJECT
20070513 RULE SENDER [email protected] 19875 20070507 22:30:01 20070522 22
:30:01 RULE_EXTENSIONS
20070513 RULE SENDER [email protected] 3 20070509 09:08:38 20070524 09:08:38
JASD_HP_AUTOREJECT
20070513 RULE SENDER [email protected] 10 20070503 21:19:36 200
70518 21:19:36 RULE_EXTENSIONS
20070513 RULE SENDER [email protected] 4 20070506 04:39:48 20070521 04
:39:48 JASD_HP_AUTOREJECT
Thanks.

not sure if this will work but you may want to give it a try:
change from:
(MAIL_DATE date 'yyyymmdd hh24:mi:ss'
to:
(MAIL_DATE date 'yyyymmdd'since the first data on your file does not have the timestamps

Help in calling sql loader and an oracle procedure in a script

Hi Guru's
please help me in writing an unix script which will call sql loader and also an oracle procedure..
i wrote an script which is as follows.
!/bin/sh
clear
#export ORACLE_SID='HOBS2'
sqlldr USERID=load/ps94mfo16 CONTROL=test_nica.ctl LOG=test_nica.log
retcode=`echo $?`
case "$retcode" in
0) echo "SQL*Loader execution successful" ;;
1) echo "SQL*Loader execution exited with EX_FAIL, see logfile" ;;
2) echo "SQL*Loader execution exited with EX_WARN, see logfile" ;;
3) echo "SQL*Loader execution encountered a fatal error" ;;
*) echo "unknown return code";;
esac
sqlplus USERID=load/ps94mfo16 << EOF
EXEC DO_TEST_SHELL_SCRIPT
it is loading the data in to an oracle table
but the procedure is not executed..
any valuable suggestion is highly appriciated..
Cheers

multiple duplicate threads:
to call an oracle procedure and sql loader in an unix script
Re: Can some one help he sql loader issue.

Expert Help needed with Sql Loader !

Hello Friends...I am using one .dat file that contains several values in a
particular column and I need to load those values in different tables with
sqlloader.....For example: in column 3 there are values 0001, 0004, 0007, 9999
..> values 0001 and 0004 need to be loaded into table1 and value 0007 is
loaded into table2 and value 9999 needs to be loaded into table3.
I can successfully use the when clause to load one value at a time but
cannot load a range or multiple values during the sqlloader load. I can
call and run separate .ctl files but less complexity and fewer files would
be better. Tried everything I know but no luck, can't do loads in same
.ctl file......Does the when clause have limitations whereby only one value
at a time can evaluated as True or False ?
I would like to do a Not or InBetween evaluations if possible on that
single coulmn and then do the loads in the specific tables.
Any help would be appreciated as I can see my hair turn grayer by the
minute..My thanks in advance..

You're asking sql*load to perform an unnatural act.
Load in you dat file as-is. Create a pl/sql procedure to do the rest.
Your batch script calls sql*load, then sql*plus to run the proc.
Must simpler. sql*load is not a procedural language.

Is license required for Sql Loader?

I find that Sql Loader could save much time for me in bulk inserting.
But I'm not sure whether license is required for using it in business software developing.
Or is there any API that can provide similar functionality of Sql Loader?

The sqlldr utility, expdp and impdp, and sqlplus come with the rdbms license. Earlier client software had the option of installing sqlldr, exp, and imp onto the client machine for use against a remote database. Being that expdp and impdp only run on the database server now these two utilities are probably not included but sqlldr may still be available as part of the client.
HTH -- Mark D Powell --

Help needed in SQL Loader-Urgent..!

Hi All,
I am having a staging table with 4 columns, I have to insert
values in 3 of the columns from a CSV file using SQl Loader( The
CSV file has only 3 columns in it) and a default value has to be
inserted in to the 4th column.How can I attain this?? Can I have
this default
value logic written in the Control file used for the data insert? If
yes, Please tell me how..
Thanks,
Vidya

did you refer the doc before posting this question?
http://download.oracle.com/docs/cd/B10501_01/server.920/a96652/toc.htm

Help Needed regarding SQL Loader Error

Hi,
I am trying to insert some records into two tables using same control file.
I am using the follwing command to load data
sqlload "$ORAUSER" CONTROL="$LDRFILE" DATA="$DATA_PATH/$DATA_FILE" BAD="$BAD_FILE" LOG="$LOG_FILE" DISCARD="$DISCARD_FILE" ERRORS="$MAX_ERRS"
I am getting the error: SQL-LOADER - 350: Illegal combination of non-alphanumeric characters
#!/bin/ksh
Please suggest me what I need to do.
Thanks,
Srinivas.

it appears that you are using this line code in your korn shell script. if you try to do a manual run on the unix command line do you still get the same error?
also can you post a sample value for all the parameters you have.

Help needed on SQL*LOADER

Hi,
I am using oracle 8i for Windows release 8.1.7.
I have a data feed file 'XYZ.ctl' which contains numerous records.Each record is having various data. This data is subdivided into fields seprated by '~'.
Each field can be of variable length. Thus my data per line is represented as below:
1)A~BG~1223~023456~AW3456DF~001~desc1~002~desc2~~~~~~~~~~~~
2)A~MN~1423~073453~AW56DF~001~desc11~002~desc22~003~desc33~~~~~~~~~~~~~~~~~~
Here the point that is to be noted is each field ends with '~'.
Now I would like to push data from 'A' to 'AW3456DF' of 'record 1' to Table X and from there on i.e from '001' to 'desc2' to Table Y.
Similarly for record 2 I would like to push data from 'A' to 'AW56DF' to Table X and from there on i.e from '001' to 'desc33' to Table Y.
This has to be achieved through SQL*Loader. Can it be achieved? If not then is there another way? Actually much of the loading that is done in production is already present and working fine. We just need to implement
the above functionality.
Another point is that the numeric part i.e. '001' would go in column 'Col1'and the description part i.e 'desc1' would go in column 'Col2' of table Y.
Please let me know if anything could be done.
Thanking in advance.
Rajeev

UTL_FILE
With the UTL_FILE package, your PL/SQL programs can read and write operating system text files. UTL_FILE provides a restricted version of operating system stream file I/O.
UTL_FILE I/O capabilities are similar to standard operating system stream file I/O (OPEN, GET, PUT, CLOSE) capabilities, but with some limitations. For example, you call the FOPEN function to return a file handle, which you use in subsequent calls to GET_LINE or PUT to perform stream I/O to a file. When file I/O is done, you call FCLOSE to complete any output and free resources associated with the file.
http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96612/u_file.htm#ARPLS069
Joel P�rez

Help required in SQL query

I have a table and cols as below:
START DATE     TOTAL DAYS
10/11/2011 15:00      1
10/15/2011 5:00      1
12/22/2011 10:00     1
12/22/2011 11:00     2
12/30/2011 10:00     1
1/1/2012 1:00     1
1/1/2012 10:00     1
1/1/2012 16:00     2
1/2/2012 14:00     1
1/3/2012 15:00     1
1/4/2012 15:00     2
1/4/2012 18:00     1
I need to query where the values from the above table
should return values like below:
I tried many ways but could not find suitable solution.
Kindly help me in this regard.
START DATE     TOTAL DAYS
10/11/2011 15:00     1
10/15/2011 5:00     1
12/22/2011 11:00     2
12/30/2011 10:00     1
1/1/2012 16:00      2
1/2/2012 14:00      1
1/3/2012 15:00      1
1/4/2012 15:00     2
ultimate goal is to sum up the all numbers TOTAL DAYS column in the second table... All task should be handled in single query. I cannot use java coding to handle this as my requirement needs to be included in the query which exists already.
Edited by: 915175 on Feb 16, 2012 11:02 PM

select trunc(start_date), max(start_date), max(total_days) from tablename
group by trunc(start_date);Please check below Test done at my local site with you data:
SQL>
SQL> with tablename as
2 (
3 select to_date('10/11/2011 15:00' , 'mm/dd/yyyy hh24:mi') start_date, 1 total_days from dual union all
4 select to_date('10/15/2011 5:00' , 'mm/dd/yyyy hh24:mi') start_date, 1 total_days from dual union all
5 select to_date('12/22/2011 10:00' , 'mm/dd/yyyy hh24:mi') start_date, 1 total_days from dual union all
6 select to_date('12/22/2011 11:00' , 'mm/dd/yyyy hh24:mi') start_date, 2 total_days from dual union all
7 select to_date('12/30/2011 10:00' , 'mm/dd/yyyy hh24:mi') start_date, 1 total_days from dual union all
8 select to_date('1/1/2012 1:00' , 'mm/dd/yyyy hh24:mi') start_date, 1 total_days from dual union all
9 select to_date('1/1/2012 10:00' , 'mm/dd/yyyy hh24:mi') start_date, 1 total_days from dual union all
10 select to_date('1/1/2012 16:00' , 'mm/dd/yyyy hh24:mi') start_date, 2 total_days from dual union all
11 select to_date('1/2/2012 14:00' , 'mm/dd/yyyy hh24:mi') start_date, 1 total_days from dual union all
12 select to_date('1/3/2012 15:00' , 'mm/dd/yyyy hh24:mi') start_date, 1 total_days from dual union all
13 select to_date('1/4/2012 15:00' , 'mm/dd/yyyy hh24:mi') start_date, 2 total_days from dual union all
14 select to_date('1/4/2012 18:00' , 'mm/dd/yyyy hh24:mi') start_date, 1 total_days from dual
15 )
16 select TO_CHAR(max(start_date),'MM/DD/YYYY HH24:MI') start_date , max(total_days) total_days from tablename
17 group by trunc(start_date);
START_DATE       TOTAL_DAYS
10/15/2011 05:00          1
01/03/2012 15:00          1
12/30/2011 10:00          1
01/01/2012 16:00          2
10/11/2011 15:00          1
12/22/2011 11:00          2
01/04/2012 18:00          2
01/02/2012 14:00          1
8 rows selected.
SQL>Regards,
Dipali..
Update: Added test done at my database..
Edited by: Dipali Vithalani on Feb 16, 2012 11:18 PM

*URGENT HELP REQUIRED* java.sql.SQLException: Invalid Oracle URL specifed

Hi all,
In the middle of the last week for my final year project and having to convert to an Oracle database due to compatibility problems with university Tomcat Server and MS Access. I'm having trouble connecting to the Oracle database and would appreciate some help please.
Running on Windows 98 in the lab here, and the Oracle 9i, release 9.2.0.2.0, J2SDK1.4.0, Classes12.zip installed OK.
Code for connection looks like this inside the constructor of my class:
Class.forName("oracle.jdbc.driver.OracleDriver");
cardSaleConnexion = DriverManager.getConnection("jdbc:oracle:[email protected]:1521:sid","user_name","pwdt");
System.out.println("Connection Successful ");
And I'm getting the following error when calling the constructor in a driver program:
java.sql.SQLException: Invalid Oracle URL specified
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:269)
     at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:188)
     at java.sql.DriverManager.getConnection(DriverManager.java:512)
     at java.sql.DriverManager.getConnection(DriverManager.java:171)
     at CardSale.<init>(CardSale.java:30)
     at Driver.main(Driver.java:11)
Exception in thread "main"
Please reply on a very urgent basis.
Kind regards,
Peter

Try ojdbc14.jar as the JDBC driver instead of classes12.zip.
Refer:
http://otn.oracle.com/software/tech/java/sqlj_jdbc/htdocs/jdbc9201.html
http://docs.sun.com/source/817-5603-10/index.html
Database Driver
This section describes the known database driver issues and associated solutions.
ID      Summary
4700531      On Solaris, an ORACLE JDBC driver error occurs.
     This new Java Database Connectivity (JDBC) driver is for Oracle (R) working with JDK1.4. The problem is caused by a combination of the Oracle 9.1 database and ojdbc14.jar. Applying the patch will fix the problem on Solaris 32-bit machine, running an Oracle 9.0.1.3 database.
     Solution
     Obtain and apply the patch to your server from the Oracle Web site for Bug 2199718. Perform the following steps:
     1.��Go to the Oracle web site.
     2.��Click the 'patches' button.
     3.��Type 2199718 in the patch number field.
     4.��Click the 32-bit Solaris OS patch.Go to Metalink.oracle.com.
     5.��Click patches.
     6.��Under patch number, enter 2199718.
     7.��Click the 32 bit Solaris OS patch.
4707531      On Solaris, accessing an Oracle 9.1 database with an Oracle 9.2 Client may cause data corruption.
     If you use an Oracle (R) 9.2 client to access an Oracle 9.1 database, data corruption might occur when a number column follows a timestamp column.
     The problem might be caused by using the ojdbc14.jar file with an Oracle 9.1 database. Applying the patch might assist in addressing the situation on Solaris 32-bit machines, running an Oracle 9.1 database. This JDBC driver is for Oracle working with JDK1.4.
     Solution
     Obtain the patch that Oracle might make available from the Oracle web site for Bug 2199718 and apply it to your server.
Regards,
Pankaj D.

Help required in data loads

Hi all,
We have actually installed some patch in R/3 system. so now we are testing BW3.5 system whether the full and delta loads are working or not.
Full loads are not having any problem but few delta loads are having problems . what we did is -
1) Re- initialize the delta loads .
2) Put/ change some records in R/3 system
3) Schedule delta loads in BW .
But 0 records are coming in BW though in R/3 the records are present.
Kindly help.

Hi
You mentioned that no recorde are moved to BW.
1) Did you check in R/3 side weather the data is in RSA7 or not?.
2) If not check in SM13 (V3) and lBWQ(Qued Delta).Activate the data source.
3) Replicate the datasource in BW and
4) Run the Program RS_TRANSTRU_ACTIVATE_ALL in SE38.
5) Perform data Loading.
You can get data in this way.
I think this will help you.
Regards,
Siva

Help Required With SQL Subquery Across DB Link - Takes Long Time

Hi,
Apologies if this is not the correct forum but I am implementing this through HTMLDB.
I am trying to run a SQL query over a DB link with a sub query on tables in my HTMLDB workspace.
The SQL query over the database link takes 1.23 seconds to run on it's own:
SELECT D.EMAIL_ADDRESS,
D.COL2,
D.COL3,
D.COL4,
D.COL5,
D.COL6,
T.COL1
FROM SCHEMA.TABLE1@DATABASELINK D,
SCHEMA.TABLE2@DATABASELINK T
WHERE D.TABLE_JOIN = T.TABLE_JOIN
AND T.COL1 = '1111111'
AND UPPER(D.COL2) IN ('XXXXXX','YYYYYY')
The SQL query based on HTMLDB workspace tables takes 0.01 seconds to run on it's own:
SELECT UPPER(A.EMAIL_ADDRESS)
FROM HTMLDBTABLE1 M, HTMLDBTABLE2 A
WHERE M.TABLE_JOIN = A.TABLE_JOIN
AND M.ID = 222
However when I try and run these together the results take 280 seconds to complete:
SELECT D.EMAIL_ADDRESS,
D.COL2,
D.COL3,
D.COL4,
D.COL5,
D.COL6,
T.COL1
FROM SCHEMA.TABLE1@DATABASELINK D,
SCHEMA.TABLE2@DATABASELINK T
WHERE D.TABLE_JOIN = T.TABLE_JOIN
AND T.COL1 = '1111111'
AND UPPER(D.COL2) IN ('XXXXXX','YYYYYY')
AND NOT EXISTS
(SELECT UPPER(A.EMAIL_ADDRESS)
FROM HTMLDBTABLE1 M, HTMLDBTABLE2 A
WHERE M.TABLE_JOIN = A.TABLE_JOIN
AND UPPER(A.EMAIL_ADDRESS) = UPPER(D.EMAIL_ADDRESS)
AND M.ID = 222)
Does anyone have any idea why this query is taking so long?
Please let me know if you require additional information.
Many thanks,
Richard.

I've updated my profile to show my email address, so go ahead and email me the strace output (compressed please). Maximum attachment size for emails to Oracle is 10MB (encoded), so split the strace output in 5MB chunks if necessary.
poll() is not normally used by the Oracle network layer for client-server connections. So this may be related to an OS network service, such as DNS or NIS. The strace should make this clear (to me anyway).
Edited by: herb on Aug 14, 2009 10:25 AM

Need help in using sql loader

Hi,
I am using sqlloader to load data from csv file to a table. csv file format is as below. And the condition is to load only data from locations DHL and ABC
item loc scheddate qty
10000001     DHL     7/13/2011     100
1000002     DHL     7/14/2011     10
101     ABC     7/15/2011     1000
10000002     ABC     7/16/2011     100
100 X 7/16/2011 0
and I am loading into table tab1
(note: there are few other cols which are nullable and don't want to isnert them)
here is the code I have written
LOAD DATA
INFILE file1.csv'
REPLACE
INTO TABLE tab1
WHEN (LOC = 'DHL')
FIELDS TERMINATED BY ","
TRAILING NULLCOLS
ITEM,
LOC,
SCHEDDATE DATE "MM/DD/YYYY",
QTY,
EXPDATE DATE (:SCHEDDATE,'MM/DD/YYYY'),
STARTDATE DATE "MM/DD/YYYY" ":SCHEDDATE",
SEQNUM SEQUENCE(1000,1),
ORDERNUM CONSTANT "2",
INTEGRATION_JOBID CONSTANT "RBI603"
INTO TABLE igpmgr.INTINS_SCHEDRCPTS
WHEN (LOC = 'ABC')
FIELDS TERMINATED BY ","
TRAILING NULLCOLS
ITEM,
LOC,
SCHEDDATE DATE "MM/DD/YYYY",
QTY,
EXPDATE DATE "MM/DD/YYYY" "to_char(to_date(:SCHEDDATE,'MM/DD/YYYY')+365,'DD/MM/YYYY')",
STARTDATE DATE "MM/DD/YYYY" ":SCHEDDATE",
SEQNUM SEQUENCE(1000,1),
ORDERNUM CONSTANT "2",
INTEGRATION_JOBID CONSTANT "RBI603"
But its only inserting rows from loc DHL and not from ABC...
Please help me..
Thanks,
Ravi.

Hello Ravi,
Based on your sample data, adding commas to match the field terminators specified in the control file:10000001,DHL,7/13/2011,100
1000002,DHL,7/14/2011,10
101,ABC,7/15/2011,1000
10000002,ABC,7/16/2011,100
100,X,7/16/2011,0Consider the following:LOAD DATA
INFILE test.csv'
APPEND
INTO TABLE tab1
WHEN (LOC = 'ABC')
FIELDS TERMINATED BY ","
TRAILING NULLCOLS
( ITEM
, LOC
, SCHEDDATE          DATE "MM/DD/YYYY"
, QTY                                                -- moved to the fourth column to match the order presented in the sample data
, EXPDATE            DATE "MM/DD/YYYY"               -- changed specified date format to use double quotes instead of single quotes and swapped order of DD & MM to match SCHEDDATE in sample data, but also not present in the sample data, so would expect this to be treated as null, so not sure why it is specified
, STARTDATE          DATE "MM/DD/YYYY" ":SCHEDDATE"
, SEQNUM             SEQUENCE(1000,1)
, ORDERNUM           CONSTANT          "2"
, INTEGRATION_JOBID CONSTANT          "RBI603"
INTO TABLE tab1
WHEN (LOC = 'DEF')
FIELDS TERMINATED BY ","
TRAILING NULLCOLS
( ITEM               POSITION(1)                     -- added POSITION(1) to allow sqlldr to start reading from the beginning of the line
, LOC
, SCHEDDATE          DATE "MM/DD/YYYY"
, QTY                                                -- moved to the fourth column to match the order presented in the sample data
, EXPDATE            DATE "MM/DD/YYYY"               -- not present in the sample data, so would expect this to be treated as null, so not sure why it is specified
, STARTDATE          DATE "MM/DD/YYYY" ":SCHEDDATE"
, SEQNUM             SEQUENCE(1000,1)
, ORDERNUM           CONSTANT          "2"
, INTEGRATION_JOBID CONSTANT          "RBI603"
)Hope this helps,
Luke
Please mark the answer as helpful or answered if it is so. If not, provide additional details.
Always try to provide actual or sample statements and the full text of errors along with error code to help the forum members help you better.

Urgent help require-ASO data loading

I am working on 9.3.0 and want to do incremental data loading so that it wont affect my past data.I am still not sure that it is doable or not .Now the question is
do I need to design a new aggragation after loading data.
Thanks in advance

Hi,
The ASO cube will clear off all the data , if you make any structural changes to the cube ( i.e if you change your outline ,and you can find out what exactly can clear off hte data ,for example , if you add a new member ,then ,it clears off , and in other case ,if you just add a simple formula to the existing member , it might not clear off the data ).
If you dont want to effect the past data ,and yet you want to incrementally load , then ensure that all the members are already in the otl( take care of time dimension , let all the time members be there in place) and then you can load in ,using the option of 'add to existing values' while you load .
But remember , you can only do ,without any structural changes. Else , you need to load all together again
Its good if you design aggregation , as it helps in retrieval performance, but its not mandatory.
Sandeep Reddy Enti
HCC

Help required in SQL Loader

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