> We *should* be able to use this syntax in DSQL:
>
> UPDATE blob_test
> SET blb_text = :zipped_file
> FILTER FROM -2 TO 1;
>
> I'd be interested to see whether it works for you. I've tried it using
> some of the system blob filters (unsuccessfully) but never with a custom
> filter...

There is not such syntax, so it can't work for anybody.
The "FILTER FROM" clause is used in esql in *blob cursor* only.

Ivan