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Allow row comparisons to be used as indexscan qualifications.

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This completes the project to upgrade our handling of row comparisons.
This commit is contained in:
Tom Lane
2006-01-25 20:29:24 +00:00
parent 06d45e485d
commit 3a0a16cb7e
11 changed files with 996 additions and 142 deletions
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30
src/backend/executor/nodeBitmapIndexscan.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/nodeBitmapIndexscan.c,v 1.14 2005/12/03 05:51:01 tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/nodeBitmapIndexscan.c,v 1.15 2006/01/25 20:29:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -244,6 +244,20 @@ ExecInitBitmapIndexScan(BitmapIndexScan *node, EState *estate)
#define BITMAPINDEXSCAN_NSLOTS 0
/*
* We do not open or lock the base relation here. We assume that an
* ancestor BitmapHeapScan node is holding AccessShareLock (or better)
* on the heap relation throughout the execution of the plan tree.
*/
indexstate->ss.ss_currentRelation = NULL;
indexstate->ss.ss_currentScanDesc = NULL;
/*
* Open the index relation.
*/
indexstate->biss_RelationDesc = index_open(node->indexid);
/*
* Initialize index-specific scan state
*/
@ -255,6 +269,7 @@ ExecInitBitmapIndexScan(BitmapIndexScan *node, EState *estate)
* build the index scan keys from the index qualification
*/
ExecIndexBuildScanKeys((PlanState *) indexstate,
indexstate->biss_RelationDesc,
node->indexqual,
node->indexstrategy,
node->indexsubtype,
@ -286,16 +301,8 @@ ExecInitBitmapIndexScan(BitmapIndexScan *node, EState *estate)
}
/*
* We do not open or lock the base relation here. We assume that an
* ancestor BitmapHeapScan node is holding AccessShareLock (or better)
* on the heap relation throughout the execution of the plan tree.
*/
indexstate->ss.ss_currentRelation = NULL;
indexstate->ss.ss_currentScanDesc = NULL;
/*
* Open the index relation and initialize relation and scan descriptors.
* Initialize scan descriptor.
*
* Note we acquire no locks here; the index machinery does its own locks
* and unlocks. (We rely on having a lock on the parent table to
* ensure the index won't go away!) Furthermore, if the parent table
@ -303,7 +310,6 @@ ExecInitBitmapIndexScan(BitmapIndexScan *node, EState *estate)
* opened and write-locked the index, so we can tell the index machinery
* not to bother getting an extra lock.
*/
indexstate->biss_RelationDesc = index_open(node->indexid);
relistarget = ExecRelationIsTargetRelation(estate, node->scan.scanrelid);
indexstate->biss_ScanDesc =
index_beginscan_multi(indexstate->biss_RelationDesc,