>>I guess the reason is that user may have existing indexes on fields using the domain. Changing the collate would need to have the indexes rebuilt, otherwise they would be "corrupted". So, to avoid that, FB >>doesn't allow such changes.

Yes, that can be the reason but i think something like this
will be also not possible - if you change datatype of domain not only collation – i think.
But this should be possible by introduce command like
ALTER DOMAIN ALTER TYPE VARCHAR(150) COLLATION PXW_PLK REBUILD; <- here we add rebuild command.
But i think about BLR – is colltion compiled into blr of procedures and triggers?
If yes then also this objects should be rebuilded by “REBUILD” command.
Now doing something like this makes you have a headache
regards,
Karol Bieniaszewski

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