On 11/01/2014 02:34 PM, Andres Freund wrote:
Yeah, if we were trying to duplicate the behavior of indisvalid, there'd
need to be a way to detect the invalid index at plan time and not use it.
But I'm not sure that that's actually an improvement from the user's
standpoint: what they'd see is queries suddenly, and silently, performing
a lot worse than they expect.  An explicit complaint about the necessary
REINDEX seems more user-friendly from where I sit.
A REINDEX is imo unlikely to be acceptable. It takes long (why would you
bother on a small table?) and locks the relation/indexes.


It's a bit of a pity we don't have REINDEX CONCURRENTLY.


cheers

andrew


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