Answer Posted / sairam
Using Chain we can set the pointer to the particular record
according the criteria specified in the chain operation. But
in this case, if the record is found then the pointer will
be set, otherwise i.e., if the record does not exist then
the pointer will not set. This is the reason why we check
with the %Found keyword. And moreover after reading the
record (in case if the record found and there are more
number of records with the same keyword), we can not move
to the another record, which meets the same criteria
specified in the Chain operation. So the conclusion is we
can not read more number of records with the Chain
operation, if there are more number of records exist with
the same criteria in the file.
Where as using READE, we can read all the records which meet
the same criteria using subsequent READE operation. If there
are no records with the specified criteria then the pointer
will be set to EOF.
| Is This Answer Correct ? | 70 Yes | 5 No |
Post New Answer View All Answers
do you use message subfiles? What are the necessary keywords required coding a message subfile?
When it is desirable to describe files Internally?
Q:HI friends accually ihave one problem plesase let me know the alternate code of this code. Related field description of code: Add a field, CALvsPRD, "Calendar Day Starts Before/After Production Day" to the parameter set WRKORDER which accepts values 'A' or 'B' o B = Calendar Day Starts Before Production Day o A = Calendar Day Starts After Production Day o Any other value indicates the production and calendar dates are always the same. code: Automatic Execution Of *INZSR Subroutine /Z01 * retrieves WRKORDER field values. /Z01 * Calculate default Production Date and return it to caller. /Z01 * Production date defaults to system date /Z01 C Eval P@Pdate = %DATE() /Z01 * unless Calendar date starts Before PDN(production) date and /Z01 * system time is before PDN Start Time then /Z01 * PDN date is yesterday. /Z01 C If W@CALvsPRD = 'B' and /Z01 C %TIME() < %TIME (W@Strtime) /Z01 C Eval P@Pdate -= %Day(1) /Z01 * unless Calendar date starts After PDN date and /Z01 * system time is *GE PDN(production) Start Time then /Z01 * PDN date is tomorrow. /Z01 C ElseIf W@CALvsPRD = 'A' and W@Strtime > *Zero and /Z01 C %TIME() >= %TIME (W@STrtime) /Z01 C Eval P@Pdate += %Day(1) /Z01 C EndIf /Z01 C Eval *InLr = *On
what is an online rpg?
What is the difference between copybooks and subprocedures in as400?
What are the types of identifiers?
Assume 2 users are using the same file and first user updates some record in the file. Will the 2nd user will be able to see the updated record or not?
can any one help in hawkeye and turnover or any change management system plzzzzz or send the documents to my mail id :gvsp.as4@gmail.com
We have job which is running as batch. It takes atleast 06 hours to complete tht job. But I wanna do tht job with in 3 hours?
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."
how do I declare a minor?
which program rpg or cl is efficent to update a transaction onto a database file and why ?
What is a record lock error?
write an RPG program to calculate the marks of 5 students (A,B, C, D, E)in 3 different subjects (eng, math, sci) an display on the screen
How Chain operation copies the record's data to the input buffer for the program?
