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How can we read a particular record from the database file
which is not having DDS (Flat File). For example, there are
100 records in the flat file. How can we retrive 15th
record in RPG/400 program (Without using CL)

Answers were Sorted based on User's Feedback



How can we read a particular record from the database file which is not having DDS (Flat File). Fo..

Answer / swetha p rao

Yes ,Using RRN of the file we can retrive.

Chain the file with RRN or Query the file with RRN
select * from temp33 where RRN(temp33) = 15

Is This Answer Correct ?    15 Yes 0 No

How can we read a particular record from the database file which is not having DDS (Flat File). Fo..

Answer / pravin

there are too many ways-
1. declare that flat file as a edf in pgm and rename the
rcd-format and field name than set the pointer on 15 record
by setll and then read it.
2. define a per-run time array with fromfile(name of flate
file). then see th2 arrays 15 index value.

this are two methods. i have 2 more methods also
if any one want's contact me on pravin_cse1@yahoo.com

Is This Answer Correct ?    4 Yes 1 No

How can we read a particular record from the database file which is not having DDS (Flat File). Fo..

Answer / prince

My Answer is below
We need to use the following.

Factor 1 = 15
Opcode = CHAIN
Fator 2 = File Name


Please correct me if I am wrong

Is This Answer Correct ?    10 Yes 9 No

How can we read a particular record from the database file which is not having DDS (Flat File). Fo..

Answer / swetha

I think you can use setll only if the file has keyfield

Is This Answer Correct ?    4 Yes 7 No

How can we read a particular record from the database file which is not having DDS (Flat File). Fo..

Answer / kamal

EVAL EMPID=15
EVAL=%FOUND(PF NAME)
READ PFNAME
EMPID DSPLY

Is This Answer Correct ?    0 Yes 3 No

How can we read a particular record from the database file which is not having DDS (Flat File). Fo..

Answer / kkk

ithink
using setll
factor1 setll pfname

Is This Answer Correct ?    1 Yes 4 No

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RETRIVING DELETED RECORDS :- I'm frequently asked how to retrieve deleted records from an unjournaled physical file when the deleted records have not yet been removed from the file. Utility UNDEL lets you undelete records in a physical file. This public domain program is available in CISC and RISC versions, and the complete source code is available for download at: UNDEL for AS/400 Save File (RISC): http://www.as400network.com/sharewarefiles/undelris.zip UNDEL for AS/400 Save File (CISC): http://www.as400network.com/sharewarefiles/undel.zip UNDEL for AS/400 Save File (Source code): http://www.as400network.com/sharewarefiles/undelsrc.zip The utility takes advantage of the fact that deleted records in physical files are only flagged as deleted, and the record data still exists until it is overwritten or the file is reorganized with a utility such as RGZPFM. UNDEL simply reads the deleted record, then reuses the record by writing over it with the new record (thus eliminating the flag for the deleted record). Some homegrown and commercial utilities copy the file containing undeleted records to a save file, then use a program to read the save file, which contains live and undeleted records, to a file to undelete the records. The UNDEL utility is superior to the SAVF technique because there's no need to copy the file to a save file, which is especially important for really large files. When run, UNDEL displays the physical file records in their unformatted, raw text form. You can either position the display to a given relative record number or use F19 or F20 to find the previous and next deleted record, respectively. The utility also includes online help, which is almost unheard of for free utilities. Other utilities include the ability to undelete records. You can use the RTVDLTRCD command in the old QUSRTOOL (no longer supported by IBM). QUSRTOOL is now a commercial product called TAA Productivity Tools ( http://www.taatool.com ). The free file editor WRKDBF has a built-in undelete capability ( http://www.wrkdbf.com ), and several commercial file editors can undelete records. For a complete list of file editors, go to http://www.sourcebook400.com, select "Programmer Tools" under "Product Category," then select "File Editors."

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