> from Release Notes v.1.0.1:
>
> "
> A Gotcha with SELECT FIRST
> This
>
> delete from TAB1 where PK1 in (select first 10 PK1 from TAB1);
>
> will delete all of the rows in the table. Ouch! the sub-select is
> evaluating each 10 candidate rows for deletion, deleting them, slipping
> forward 10 more...ad infinitum, until there are no rows left. Beware!
> "
>
> Question: what is PK1 ?

PK1 is probably a field in Primary Key 1 :)

Just an example...

Martijn Tonies
InterBase Workbench - the developer tool for InterBase and Firebird
http://www.interbaseworkbench.com

Upscene Productions
http://www.upscene.com

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If we change anything, the users object."