Number of records in z/os flat file

[sas01]

Is there a way to get the number of records in a z/os sequential mainframe flat file without having to read, INPUT, through all the records in the file?

For Example:

If I have a sequential file named  'ABC.MYNAME.DAY01', how can I get the number of records in this file saved to a SAS variable named COUNT without having to INPUT all the records in the sequential file.

[Tom · Accepted solution]

I don't think MVS stores a record count for sequential files.  You might be able to estimate if you knew the filesize and record length.

You should be able to count by reading the file, you don't have to actual use any of the information you read however.

data _null_;
  if eof then call symputx('numrecs',_n_-1);
  infile 'my.main.frame.file' end=eof;
  input;
run;