File Management - IBM

CPYSRCF command support for CCSIDs
Using the Copy Source File (CPYSRCF) command automatically converts data in
the from-file to the to-file CCSID. If you do not want the character data converted,
use the CPYF command with FMTOPT(*NOCHK).
Copy commands support for null values
You can copy files that contain null-capable fields by using the CPYF and
CPYFRMQRYF commands. The FMTOPT parameter allows mapping of
null-capable fields. The INCREL parameter allows selection of records that are
based on whether a field is or is not null.
While copying the records to the to-file, the following commands ignore null
values in the from-file:
CPYTOTAP
CPYTODKT
CPYFRMTAP
CPYFRMDKT
The following conditions or values on the CPYF or CPYFRMQRYF command
ignore null values in the from-file while copying the records to the to-file:
FMTOPT(*NOCHK)
FMTOPT(*CVTSRC)
Device to-file
Record selection involving null values may still be done, but only the
user-specified or default value in the buffer (rather than a null value) is copied to
the to-file. Null values cannot be preserved in these instances. Any print listings
produced when a copy command is run (including TOFILE(*PRINT),
PRINT(*COPIED), PRINT(*EXCLUDE), and PRINT(*ERROR)) also ignore null
values.
Creating the to-file (CRTFILE parameter)
82 File Management V4R5
To copy a physical or logical file when no to-file exists to receive the data, you can
create the to-file by specifying CRTFILE(*YES). Specify the name of the new to-file
on the TOFILE parameter. Qualify the name with the name of an existing library
for which you have the required authority. (You must also have authority to the
CRTPF command). You cannot override the created to-file that you specified to a
different file or library.
CRTFILE(*YES) automatically adds members and records to the new file.
The newly created file has certain authorities, capabilities, and a user profile
associated with it. For more information, see “Authorities, user profiles, and file
capabilities of the to-file created by Copy File (CPYF)” on page 83. Your system
specifies different identifiers and attributes to the new file based on whether you
use the CPYF or CPYFRMQRYF command. See “Specifying CRTFILE(*YES) on
either the CPYF or CPYFRMQRYF command” on page 83.