SORT-MERGE/XL Programmer's Guide (32650-90884)

14 Chapter1
Introduction
Merging
Merging
MERGE/XL only merges files that have already been sorted. For example, if you merge a
file that contains information on newly hired employees with a file that contains
information on current employees, each file must have the same record format and be
sorted by the same information. If you merged two such files, each sorted by last name, you
would get one output file with all employees sorted by last name. The output file would
have the same information and format as the two input files.
Figure 1-3. MERGE/XL Operations
The intrinsics used for merging are:
HPMERGEINIT Initializes MERGE/XL utility and begins the merging operation
(required).
HPMERGEERRORMESS Returns error messages.
HPMERGEOUTPUT Allows output to be by record (instead of file).
HPMERGEEND Ends the merging operation (required).
HPMERGESTAT Prints out merging statistics.
HPMERGETITLE Prints out title information for MERGE/XL.
NOTE For merging operations, use only the merge intrinsics. Do not mix sort and
merge intrinsics.