Subject RE: [firebird-support] rebuild primary key index?
Author Svein Erling Tysvær
>For unique indexes and the indexes created to
>support unique and primary key constraints, the selectivity is
>known in advance, so you don't need to reset it.

Is this true also for multicolumn indexes in newer Firebird versions where the selectivity is calculated for parts of indexes? I'm just curious, I never use multicolumn PKs myself.