plu 12 <plutar...@hotmail.com> writes:
> Technically, would we also need to worry about constraints that are a prefix 
> of an index? e.g., that an index on (f1, f2) would be usable for a constraint 
> on (f1)?

I guess you could, but it seems overly complicated for something that's
just meant to locate trouble spots.

                        regards, tom lane

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