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Remove support for OR'd indexscans internal to a single IndexScan plan

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node, as this behavior is now better done as a bitmap OR indexscan.
This allows considerable simplification in nodeIndexscan.c itself as
well as several planner modules concerned with indexscan plan generation.
Also we can improve the sharing of code between regular and bitmap
indexscans, since they are now working with nigh-identical Plan nodes.
This commit is contained in:
Tom Lane
2005-04-25 01:30:14 +00:00
parent 186655e9a5
commit 5b05185262
21 changed files with 711 additions and 1924 deletions
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14
src/backend/optimizer/plan/subselect.c
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/plan/subselect.c,v 1.97 2005/04/19 22:35:16 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/plan/subselect.c,v 1.98 2005/04/25 01:30:13 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1028,21 +1028,21 @@ finalize_plan(Plan *plan, List *rtable,
break;
case T_IndexScan:
finalize_primnode((Node *) ((IndexScan *) plan)->indxqual,
finalize_primnode((Node *) ((IndexScan *) plan)->indexqual,
&context);
/*
* we need not look at indxqualorig, since it will have the
* same param references as indxqual.
* we need not look at indexqualorig, since it will have the
* same param references as indexqual.
*/
break;
case T_BitmapIndexScan:
finalize_primnode((Node *) ((BitmapIndexScan *) plan)->indxqual,
finalize_primnode((Node *) ((BitmapIndexScan *) plan)->indexqual,
&context);
/*
* we need not look at indxqualorig, since it will have the
* same param references as indxqual.
* we need not look at indexqualorig, since it will have the
* same param references as indexqual.
*/
break;