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Cross-data-type comparisons are now indexable by btrees, pursuant to my

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pghackers proposal of 8-Nov.  All the existing cross-type comparison
operators (int2/int4/int8 and float4/float8) have appropriate support.
The original proposal of storing the right-hand-side datatype as part of
the primary key for pg_amop and pg_amproc got modified a bit in the event;
it is easier to store zero as the 'default' case and only store a nonzero
when the operator is actually cross-type.  Along the way, remove the
long-since-defunct bigbox_ops operator class.
This commit is contained in:
Tom Lane
2003-11-12 21:15:59 +00:00
parent 49f98fa833
commit fa5c8a055a
76 changed files with 2237 additions and 1492 deletions
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6
src/include/utils/rel.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: rel.h,v 1.69 2003/11/09 21:30:38 tgl Exp $
* $Id: rel.h,v 1.70 2003/11/12 21:15:59 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -139,8 +139,8 @@ typedef struct RelationData
/*
* index access support info (used only for an index relation)
*
* Note: only operators and support procs for the index's own datatype
* are cached, not any cross-type operators. The arrays are indexed by
* Note: only default operators and support procs for each opclass are
* cached, namely those with subtype zero. The arrays are indexed by
* strategy or support number, which is a sufficient identifier given
* that restriction.
*/