Raul et al,

> I'm the one-L Helen but it wasn't I who said that. As for maximum rows per
> table, it's 2^32; but it's never a good thing to retain garbage in the
> db; and frequent small delete batches are a lot more hygienic that
> apocalyptic purges.

I fully agree with Helen here, and I have to add that an atomic index on
a two-value column in a multi-million record table does not look exactly
a speed enhancer to me.
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