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First steps towards index scans with heap access decoupled from index

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access: define new index access method functions 'amgetmulti' that can
fetch multiple TIDs per call.  (The functions exist but are totally
untested as yet.)  Since I was modifying pg_am anyway, remove the
no-longer-needed 'rel' parameter from amcostestimate functions, and
also remove the vestigial amowner column that was creating useless
work for Alvaro's shared-object-dependencies project.
Initdb forced due to changes in pg_am.
This commit is contained in:
Tom Lane
2005-03-27 23:53:05 +00:00
parent 351519affc
commit bf3dbb5881
20 changed files with 535 additions and 174 deletions
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5
src/include/access/hash.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/hash.h,v 1.60 2005/03/21 01:24:04 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/hash.h,v 1.61 2005/03/27 23:53:04 tgl Exp $
*
* NOTES
* modeled after Margo Seltzer's hash implementation for unix.
@@ -232,8 +232,9 @@ typedef HashItemData *HashItem;
extern Datum hashbuild(PG_FUNCTION_ARGS);
extern Datum hashinsert(PG_FUNCTION_ARGS);
extern Datum hashgettuple(PG_FUNCTION_ARGS);
extern Datum hashbeginscan(PG_FUNCTION_ARGS);
extern Datum hashgettuple(PG_FUNCTION_ARGS);
extern Datum hashgetmulti(PG_FUNCTION_ARGS);
extern Datum hashrescan(PG_FUNCTION_ARGS);
extern Datum hashendscan(PG_FUNCTION_ARGS);
extern Datum hashmarkpos(PG_FUNCTION_ARGS);