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Modify optimizer data structures so that IndexOptInfo lists built for

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create_index_paths are not immediately discarded, but are available for
subsequent planner work.  This allows avoiding redundant syscache lookups
in several places.  Change interface to operator selectivity estimation
procedures to allow faster and more flexible estimation.
Initdb forced due to change of pg_proc entries for selectivity functions!
This commit is contained in:
Tom Lane
2001-05-20 20:28:20 +00:00
parent 5d53389cfe
commit be03eb25f3
32 changed files with 1147 additions and 1218 deletions
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90
src/backend/nodes/readfuncs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.108 2001/05/07 00:43:19 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.109 2001/05/20 20:28:18 tgl Exp $
*
* NOTES
* Most of the read functions for plan nodes are tested. (In fact, they
@ -1318,88 +1318,6 @@ _readJoinExpr(void)
return local_node;
}
/*
* Stuff from relation.h
*/
/* ----------------
* _readRelOptInfo
* ----------------
*/
static RelOptInfo *
_readRelOptInfo(void)
{
RelOptInfo *local_node;
char *token;
int length;
local_node = makeNode(RelOptInfo);
token = pg_strtok(&length); /* get :relids */
local_node->relids = toIntList(nodeRead(true)); /* now read it */
token = pg_strtok(&length); /* get :rows */
token = pg_strtok(&length); /* now read it */
local_node->rows = atof(token);
token = pg_strtok(&length); /* get :width */
token = pg_strtok(&length); /* now read it */
local_node->width = atoi(token);
token = pg_strtok(&length); /* get :targetlist */
local_node->targetlist = nodeRead(true); /* now read it */
token = pg_strtok(&length); /* get :pathlist */
local_node->pathlist = nodeRead(true); /* now read it */
token = pg_strtok(&length); /* get :cheapest_startup_path */
local_node->cheapest_startup_path = nodeRead(true); /* now read it */
token = pg_strtok(&length); /* get :cheapest_total_path */
local_node->cheapest_total_path = nodeRead(true); /* now read it */
token = pg_strtok(&length); /* eat :pruneable */
token = pg_strtok(&length); /* get :pruneable */
local_node->pruneable = strtobool(token);
token = pg_strtok(&length); /* get :issubquery */
token = pg_strtok(&length); /* now read it */
local_node->issubquery = strtobool(token);
token = pg_strtok(&length); /* get :indexed */
token = pg_strtok(&length); /* now read it */
local_node->indexed = strtobool(token);
token = pg_strtok(&length); /* get :pages */
token = pg_strtok(&length); /* now read it */
local_node->pages = atol(token);
token = pg_strtok(&length); /* get :tuples */
token = pg_strtok(&length); /* now read it */
local_node->tuples = atof(token);
token = pg_strtok(&length); /* get :subplan */
local_node->subplan = nodeRead(true); /* now read it */
token = pg_strtok(&length); /* get :baserestrictinfo */
local_node->baserestrictinfo = nodeRead(true); /* now read it */
token = pg_strtok(&length); /* get :baserestrictcost */
token = pg_strtok(&length); /* now read it */
local_node->baserestrictcost = (Cost) atof(token);
token = pg_strtok(&length); /* get :outerjoinset */
local_node->outerjoinset = toIntList(nodeRead(true)); /* now read it */
token = pg_strtok(&length); /* get :joininfo */
local_node->joininfo = nodeRead(true); /* now read it */
token = pg_strtok(&length); /* get :innerjoin */
local_node->innerjoin = nodeRead(true); /* now read it */
return local_node;
}
/* ----------------
* _readTargetEntry
* ----------------
@ -1557,8 +1475,8 @@ _readIndexPath(void)
token = pg_strtok(&length); /* get :pathkeys */
local_node->path.pathkeys = nodeRead(true); /* now read it */
token = pg_strtok(&length); /* get :indexid */
local_node->indexid = toOidList(nodeRead(true));
token = pg_strtok(&length); /* get :indexinfo */
local_node->indexinfo = nodeRead(true); /* now read it */
token = pg_strtok(&length); /* get :indexqual */
local_node->indexqual = nodeRead(true); /* now read it */
@ -2008,8 +1926,6 @@ parsePlanString(void)
return_value = _readOper();
else if (length == 5 && strncmp(token, "PARAM", length) == 0)
return_value = _readParam();
else if (length == 10 && strncmp(token, "RELOPTINFO", length) == 0)
return_value = _readRelOptInfo();
else if (length == 11 && strncmp(token, "TARGETENTRY", length) == 0)
return_value = _readTargetEntry();
else if (length == 3 && strncmp(token, "RTE", length) == 0)