Example 1

DATASORT FROM(INPUT) TO(OUTPUT) HEADER TRAILER USING(CTL1)

This example shows how you can sort the data records between a header record (first record) and a trailer record (last record).

The CTL1CNTL data set contains:

  SORT FIELDS=(16,13,CH,A)

The input records look like this:

MM9999900510100823DDDDD FFFFF 004200806128
AAR   FIRST C  1134341444441     XXXXXXXXX
ATX   SECOND   7777777770111     XXXXXXXXX
ATX   THIRD L  6297132201111     XXXXXXXXX
ATX   FOURTH   2830012906356     XXXXXXXXX
MM9999900510100823DDDDD FFFFF 004

We want to keep the MM records in place and sort the other records by the CH field in positions 16-28. We use HEADER and TRAILER to indicate the first and last records should not be sorted. We use the SORT statement to SORT ascending on positions 16-28.

The output records would look like this:

MM9999900510100823DDDDD FFFFF 004200806128
AAR   FIRST C  1134341444441     XXXXXXXXX
ATX   FOURTH   2830012906356     XXXXXXXXX
ATX   THIRD L  6297132201111     XXXXXXXXX
ATX   SECOND   7777777770111     XXXXXXXXX
MM9999900510100823DDDDD FFFFF 004

Note that we could use FIRST and LAST instead of HEADER and TRAILER.