Interested to Buy Any Domain ? << Click Here >> for more details...
How can read PF in reverse order (end to start) in CL pgm..
- 8 Answers
- 37041 Views
- TCS, I also Faced
- E-Mail Answers
Answer Posted / harkesh
you can read a physical file in DESENDING ORDER. You can
first sort the physical file in decending order through
OPNQRYF using KEYFLD. This will sort your PF in decending
order based on your key field and then do the RCVF on this
file.
But for this you first need to do OVRDBF on the file.
THIS IS ONLY THE WAY ON THE WE CAN READ PF IN REVERSE ORDER
BUT FOR THIS FILE SHOULD BE KEYED FILE.
ANOTHER WAY FOR THIS ON THE BASIS OF RRN. FIRST FIND OUT
TOTAL NO OF RECORD USING RTVMBRDSC COMMMAND IN CL PROGRAM.
THEN MOVE TOTAL NO TO RRN. THEN BY USING OVRDBF COMMAND SET
POINTER ON THE BASIS OF RRN. AND IN LOOP ON THE BASIS OF
RRN. LIKE
LOOP: OVERDBF FILENAME POINTER = &RRN
IF RRN NOT = 0
RCVF RCDFMTNAME.
RRN= RRN-1.
ELSE
ENDPGM
END-IF.
| Is This Answer Correct ? | 5 Yes | 2 No |
Post New Answer View All Answers
can you debug ile rpg program using isdb?
How would display prime numbers using CL program?
Hi Viewers can any body explain me how to update and ahange the already existed data in physical file using subfile ? please explain me with the code if possible?
How can we override a file during runtime in rpg?
can anybody help me to solve this problem. the program that i m checking display error message saying "Record format for file AJDSPFFD does not match model file and decimal error. how to solve this problem. The AJDSPFFD is snapshot the AJTLOG that is the audit trail list.
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."
what is *place and *auto keyword in prtf ?plz explain
How Chain operation copies the record's data to the input buffer for the program?
Suppose we have one database file and it is used by 5 programs and in 3 program we have to add some records in datbase file s what is the impact on other program?
How to select highest score of each subject or how to select highest income of every month?
how can you display specific subfile page on the screen in unequal subfile?
How to call one program from another program in RPG? please help me with the code
what is the rpg system?
what is file information data structure?
what is data area and how it is used in rpg program ?
