[Imp] LINK/UNLINK commands now have optional suffix to suppress errors

Thorsten have point us that for his task it is not comfortable when command

LINK RECORD (1) OF T1 TO RECORDS(3, 7, 9) OF T2

throws error and stops, if link 1-7 already exists.

We have agree and improve these commands adding suffix

LINK … [IF NOT EXISTS]
UNLINK … [IF EXISTS]

This suffix is similar to CREATE/DROP commands. If it is specified, then error is not fired and command continue work for other pairs of links.

Published by

Ruslan Zasukhin

VP Engineering and New Technology Paradigma Software, Inc