H5TB_COMBINE_TABLES combines records from two datasets named
dset_name2, to a new table named
dset_name3. These tables can be located on different files, identified by
loc_id2 (identifiers obtained with H5F_CREATE). They can also be located on the same file. In this case one uses the same identifier for both parameters
loc_id2. If two files are used, the third table is written in the first file.