UniBasic Commands Reference - Rocket Software

WRITEU
Syntax
WRITEU expr {ON | TO} [file.var,] record.ID.expr [ON ERROR statements]
Description
The UniBasic WRITEU command writes a record to a file without releasing locks.
WRITEU writes regardless of lock status.
Note: UniBasic locks are advisory only. For more information, see Developing
UniBasic Applications.
Warning: Do not use UniBasic READ and WRITE commands to open or modify
binary data in DIR-type files (for example, BP). Doing so can corrupt data in the file.
Instead, use OSREAD or OSBREAD after executing the UniBasic NOCONVERT
command.
Updating Alternate Key Indexes
Remember the following points about alternate key indexes when you code WRITEU
statements:
1-917 UniBasic Commands Reference
Alternate key indexes that are currently enabled are automatically updated
when you write a record.
If you execute the ECL command DUP.STATUS ON, and then write a
record that creates a duplicate alternate key, WRITEU sets the STATUS
return value to 10.
If the NO.DUPS keyword was specified when the alternate key index was
created, UniBasic will not write a record that would create a duplicate index
key. Instead, the ON ERROR clause executes (or the program aborts if ON
ERROR is not coded) and the STATUS function returns a value of 10. RFS
does not support NO.DUPS.