Get the first 10 records in a sequential file which has 1000

nalini_s_in · New User Joined: 05 Jun 2007 Posts: 3 Location: coimbatore

Hi Everybody

Recently I faced this question in an interview.

How to get the first 10 records in a sequential file which has 1000 of records in it.
Can anybody help me in this.

Nalini

muthuvel · Posted: Thu Aug 09, 2007 10:50 am Post subject: Re: Interview Question

If you want to do it using COBOL ;read only first 10 records from the input file using a read counter and write it to the output file.
If you want to do it using JCL;use STOPAFT=10 in your JCL control card

Anuj D. · Posted: Thu Aug 09, 2007 12:06 pm Post subject:

Or use MYCOPY/F33 to create a new file with temporary criteria selection & give 10 records to copy there.

nalini_s_in · New User Joined: 05 Jun 2007 Posts: 3 Location: coimbatore

Thank you very much

Regards
Nalini

dbzTHEdinosauer · Posted: Thu Aug 09, 2007 2:53 pm Post subject:

you can also use the 3.3 screen and indicate to copy relative records 1 to 10

Devzee · Posted: Fri Aug 10, 2007 10:37 am Post subject:

Also - IDCAMS REPRO with count option

ruodeer · New User Joined: 06 Jul 2007 Posts: 49 Location: USA

The PIPE command is an option as well if you can use it :
such as PIPE < 'FILE1' |TAKE 10| > 'FILE2'

Aaru

ruodeer,

Could you please give more details on the PIPE command? From where shd i issue this command? Isn't it site-specific or a TSO command?

enrico-sorichetti

Not a vanilla tso command ....

there is a pipe command available in vm
there could be something also in MVS, once upon a time there
was an offering called batch pipelines

search for "vm pipe command melinda varian"

the lady seems to be an early promoter of vm pipelines,
if I remember correctly she was jokingly called "the Chief Plumber"

anyway the pipeline concept is implicit in unix/unix_like shells
by using the "pipe operator |"