> Interesting. So we'd add a flag to the index tuples in GiST indicating
> if the tuple is lossily compressed or not. The compress-function would
> set that flag when it performs lossy compression, and gistgettuple would
> return it to the caller.
Keys in GiST index may be another type than column on which index was created,
so gistgettuple can not return tuple in original form - but sometimes
gistgettuple may be sure that recheck isn't needed.
> That would completely replace the current RECHECK-option we have, right?
Yeah, this is possible.
--
Teodor Sigaev E-mail: teodor@sigaev.ru
WWW: http://www.sigaev.ru/
