database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-07 00:36:50 +03:00
Code Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

38
src/include/nodes/execnodes.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.128 2005/04/24 18:16:38 tgl Exp $
* $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.129 2005/04/25 01:30:14 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -862,40 +862,28 @@ typedef ScanState SeqScanState;
/* ----------------
* IndexScanState information
*
* indxqualorig execution state for indxqualorig expressions
* NumIndices number of indices in this scan
* IndexPtr current index in use
* MarkIndexPtr IndexPtr for marked scan point
* ScanKeys Skey structures to scan index rels
* NumScanKeys array of no of keys in each Skey struct
* RuntimeKeyInfo array of array of exprstates for Skeys
* indexqualorig execution state for indexqualorig expressions
* ScanKeys Skey structures to scan index rel
* NumScanKeys number of Skey structs
* RuntimeKeyInfo array of exprstates for Skeys
* that will be evaluated at runtime
* RuntimeContext expr context for evaling runtime Skeys
* RuntimeKeysReady true if runtime Skeys have been computed
* RelationDescs ptr to array of relation descriptors
* ScanDescs ptr to array of scan descriptors
* LossyQuals ptr to array of qual lists for lossy operators
* DupHash hashtable for recognizing dups in multiple scan
* MaxHash max # entries we will allow in hashtable
* RelationDesc index relation descriptor
* ScanDesc index scan descriptor
* ----------------
*/
typedef struct IndexScanState
{
ScanState ss; /* its first field is NodeTag */
List *indxqualorig;
int iss_NumIndices;
int iss_IndexPtr;
int iss_MarkIndexPtr;
ScanKey *iss_ScanKeys;
int *iss_NumScanKeys;
ExprState ***iss_RuntimeKeyInfo;
List *indexqualorig;
ScanKey iss_ScanKeys;
int iss_NumScanKeys;
ExprState **iss_RuntimeKeyInfo;
ExprContext *iss_RuntimeContext;
bool iss_RuntimeKeysReady;
RelationPtr iss_RelationDescs;
IndexScanDescPtr iss_ScanDescs;
List **iss_LossyQuals;
HTAB *iss_DupHash;
long iss_MaxHash;
Relation iss_RelationDesc;
IndexScanDesc iss_ScanDesc;
} IndexScanState;
/* ----------------