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Simplify ParamListInfo data structure to support only numbered parameters,

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not named ones, and replace linear searches of the list with array indexing.
The named-parameter support has been dead code for many years anyway,
and recent profiling suggests that the searching was costing a noticeable
amount of performance for complex queries.
This commit is contained in:
Tom Lane
2006-04-22 01:26:01 +00:00
parent 0606860a20
commit 2206b498d8
20 changed files with 214 additions and 335 deletions
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21
src/backend/utils/adt/ruleutils.c
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@ -2,7 +2,7 @@
* ruleutils.c - Functions to convert stored expressions/querytrees
* back to source text
*
* $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.219 2006/04/08 18:49:52 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.220 2006/04/22 01:26:00 tgl Exp $
**********************************************************************/
#include "postgres.h"
@ -3120,24 +3120,7 @@ get_rule_expr(Node *node, deparse_context *context,
break;
case T_Param:
{
Param *param = (Param *) node;
switch (param->paramkind)
{
case PARAM_NAMED:
appendStringInfo(buf, "$%s", param->paramname);
break;
case PARAM_NUM:
case PARAM_EXEC:
case PARAM_SUBLINK:
appendStringInfo(buf, "$%d", param->paramid);
break;
default:
appendStringInfo(buf, "(param)");
break;
}
}
appendStringInfo(buf, "$%d", ((Param *) node)->paramid);
break;
case T_Aggref: