How to read a PF in reverse(from last rec to first) using CL?
Answers were Sorted based on User's Feedback
Answer / harkesh
IN THIS EXAMPLE I M USING EMPFILE FOR READING IN REVERSE
ORDER.
PGM
DCLF FILE(EMPFILE)
OVRDBF FILE(EMPFILE) SHARE(*YES)
OPNQRYF FILE((EMPFILE)) KEYFLD((EMPNO *DESCEND))
READF: RCVF RCDFMT(MPFILR)
MONMSG MSGID(CPF0864) EXEC(GOTO CMDLBL(END))
GOTO READF
END:
ENDPGM
| Is This Answer Correct ? | 27 Yes | 5 No |
Answer / ankur
using opnqryf command we can read file in reverse order in CL.
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / abhijeet m
OVRDBF FILE(ABC)
MBR(ABC)
POSITION(*END)
RCVF ABC
| Is This Answer Correct ? | 1 Yes | 10 No |
What is the interactive job?
Where the QTEMP library will get created? if the the answer is QSYS, then howcome more than one job can create same library name(QTEMP) in QSYS? what is the uniqueness of QTEMP? For example, run the below command in different workstation WRKOBJ QSYS/QTEMP And take 8 in the option to check the description. both will have different info. so where(which LIB) exactly the QTEMP is stored?
What is open data path? And what is the difference between access path and open data path?
What is the primary file?
1. How can I create a LF using crtlf command based on a particular member in a multimember PF? Where I have to specify the member name? 2. How to differentiate between the types of join from a Join logical file DDS. Is it possible to have different types of Join Logical files? 3.Any performance difference between Opnqrf and Embedded SQL? When I should prefer Opnqryf and when SQL? 4. I know access path is the path chosen by the program to retrieve data. It can be of keyed access path or arrival sequence. *IMMED- *IMMED description says access path is updated each time record is added or deleted from a member. - What is updating here? *REBLD - The access path is completely rebuilt each time a file member is opened. The access path is maintained until the member is closed, then the access path is deleted. - I am not able to understand this completely. Could anyone explain these more clearly? 5.What is the purpose of using activation group. I know it is a resource allocator, but other than this any other benefits of using an activation group?
How many max. Record format a logical file have?
How to retrieve a physical file after deleting that ? what is keyword used for that....??
I have a PF with out any data but the dependent LF is having data?
What is FORMAT keyword and its use?
Define interactive jobs and batch jobs
What is the purpose of the chain and setll and setgt?
How to read a pf in reverse(from last record to first) using cl?