On Jan 18, 2012, at 11:59 AM, Tom Lane wrote:
> AFAIR there is no specified order. It probably just seqscans pg_class,
> so whatever physical order those tuples happen to have today is it.
I'm pretty sure he meant: "in the case when CLUSTER was issued in the past to cluster the table on some index, but was not documented, how do I now find out what that index was".
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