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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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13
src/backend/optimizer/util/pathnode.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/util/pathnode.c,v 1.119 2005/04/22 21:58:31 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/util/pathnode.c,v 1.120 2005/04/25 01:30:13 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -475,13 +475,10 @@ create_index_path(Query *root,
/* Flatten the clause-groups list to produce indexclauses list */
allclauses = flatten_clausegroups_list(clause_groups);
/*
* We are making a pathnode for a single-scan indexscan; therefore,
* indexinfo etc should be single-element lists.
*/
pathnode->indexinfo = list_make1(index);
pathnode->indexclauses = list_make1(allclauses);
pathnode->indexquals = list_make1(indexquals);
/* Fill in the pathnode */
pathnode->indexinfo = index;
pathnode->indexclauses = allclauses;
pathnode->indexquals = indexquals;
pathnode->isjoininner = isjoininner;
pathnode->indexscandir = indexscandir;