Peter Geoghegan wrote:

> Can you really say that you won't have serious misgivings
> about something like the "tuple->xmin = InvalidTransactionId"
> swapping, if I actually formally propose it? That's very invasive to a
> lot of places. And right now, I have no idea how we could do better.

FWIW there are 28 callers of HeapTupleHeaderGetXmin.

Álvaro Herrera      
PostgreSQL Development, 24x7 Support, Training & Services

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