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Since createplan.c no longer cares whether index operators are lossy, it has

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no particular need to do get_op_opfamily_properties() while building an
indexscan plan.  Postpone that lookup until executor start.  This simplifies
createplan.c a lot more than it complicates nodeIndexscan.c, and makes things
more uniform since we already had to do it that way for RowCompare
expressions.  Should be a bit faster too, at least for plans that aren't
re-used many times, since we avoid palloc'ing and perhaps copying the
intermediate list data structure.
This commit is contained in:
Tom Lane
2008-04-13 20:51:21 +00:00
parent 24558da14a
commit 226837e57e
13 changed files with 96 additions and 219 deletions
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10
src/backend/utils/cache/lsyscache.c vendored
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.156 2008/03/25 22:42:44 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.157 2008/04/13 20:51:21 tgl Exp $
*
* NOTES
* Eventually, the index information should go through here, too.
@ -80,8 +80,8 @@ get_op_opfamily_strategy(Oid opno, Oid opfamily)
/*
* get_op_opfamily_properties
*
* Get the operator's strategy number, input types, and recheck (lossy)
* flag within the specified opfamily.
* Get the operator's strategy number and declared input data types
* within the specified opfamily.
*
* Caller should already have verified that opno is a member of opfamily,
* therefore we raise an error if the tuple is not found.
@ -90,8 +90,7 @@ void
get_op_opfamily_properties(Oid opno, Oid opfamily,
int *strategy,
Oid *lefttype,
Oid *righttype,
bool *recheck)
Oid *righttype)
{
HeapTuple tp;
Form_pg_amop amop_tup;
@ -107,7 +106,6 @@ get_op_opfamily_properties(Oid opno, Oid opfamily,
*strategy = amop_tup->amopstrategy;
*lefttype = amop_tup->amoplefttype;
*righttype = amop_tup->amoprighttype;
*recheck = amop_tup->amopreqcheck;
ReleaseSysCache(tp);
}