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Tom Lane f933766ba7 Restructure pg_opclass, pg_amop, and pg_amproc per previous discussions in ...

pgsql-hackers.  pg_opclass now has a row for each opclass supported by each
index AM, not a row for each opclass name.  This allows pg_opclass to show
directly whether an AM supports an opclass, and furthermore makes it possible
to store additional information about an opclass that might be AM-dependent.
pg_opclass and pg_amop now store "lossy" and "haskeytype" information that we
previously expected the user to remember to provide in CREATE INDEX commands.
Lossiness is no longer an index-level property, but is associated with the
use of a particular operator in a particular index opclass.

Along the way, IndexSupportInitialize now uses the syscaches to retrieve
pg_amop and pg_amproc entries.  I find this reduces backend launch time by
about ten percent, at the cost of a couple more special cases in catcache.c's
IndexScanOK.

Initial work by Oleg Bartunov and Teodor Sigaev, further hacking by Tom Lane.

initdb forced.

2001-08-21 16:36:06 +00:00

..

bench.pl

commit Oleg and Teodor's RD-tree implementation ... this provides the

2001-01-12 00:16:26 +00:00

create_test.pl

Restructure pg_opclass, pg_amop, and pg_amproc per previous discussions in

2001-08-21 16:36:06 +00:00