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Dimitri Fontaine
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"consistent" functions, and remove pg_amop.opreqcheck, as per recent
discussion. The main immediate benefit of this is that we no longer need
8.3's ugly hack of requiring @@@ rather than @@ to test weight-using tsquery
searches on GIN indexes. In future it should be possible to optimize some
other queries better than is done now, by detecting at runtime whether the
index match is exact or not.
Tom Lane, after an idea of Heikki's, and with some help from Teodor.
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Standard English uses "may", "can", and "might" in different ways:
may - permission, "You may borrow my rake."
can - ability, "I can lift that log."
might - possibility, "It might rain today."
Unfortunately, in conversational English, their use is often mixed, as
in, "You may use this variable to do X", when in fact, "can" is a better
choice. Similarly, "It may crash" is better stated, "It might crash".
Also update two error messages mentioned in the documenation to match.
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documenting GiST crash recovery procedures, as requested some time ago
by Teodor. (The GiST chapter doesn't seem quite the right place for
the latter, but I'm not sure what else to do with it.)
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Christopher Kings-Lynne
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Victor Y. Yegorov
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- make sure we always invoke user-supplied GiST methods in a short-lived
memory context. This means the backend isn't exposed to any memory leaks
that be in those methods (in fact, it is probably a net loss for most
GiST methods to bother manually freeing memory now). This also means
we can do away with a lot of ugly manual memory management in the
GiST code itself.
- keep the current page of a GiST index scan pinned, rather than doing a
ReadBuffer() for each tuple produced by the scan. Since ReadBuffer() is
expensive, this is a perf. win
- implement dead tuple killing for GiST indexes (which is easy to do, now
that we keep a pin on the current scan page). Now all the builtin indexes
implement dead tuple killing.
- cleanup a lot of ugly code in GiST
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we can put words in ulink and the URL will still be printed.
per Peter
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Christopher Kings-Lynne
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arch-dev.sgml
Neil Conway
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And listing QNX 6 as both supported and unsupported is probably not helpful.
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Fix up references to "PostgreSQL" rather than "Postgres". Was roughly
evenly split between the two before. ref/ files not yet done.
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of Norm's Modular Style Sheets and jade/docbook.
From Vince Vielhaber <[email protected]>.
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to be meaningful.
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Add more URL links for GiST information.
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