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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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14
src/backend/optimizer/path/indxpath.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/indxpath.c,v 1.104 2001/03/23 04:49:53 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/indxpath.c,v 1.105 2001/05/20 20:28:18 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -127,18 +127,15 @@ static Const *string_to_const(const char *str, Oid datatype);
* consideration in nested-loop joins.
*
* 'rel' is the relation for which we want to generate index paths
* 'indices' is a list of available indexes for 'rel'
*/
void
create_index_paths(Query *root,
RelOptInfo *rel,
List *indices)
create_index_paths(Query *root, RelOptInfo *rel)
{
List *restrictinfo_list = rel->baserestrictinfo;
List *joininfo_list = rel->joininfo;
List *ilist;
foreach(ilist, indices)
foreach(ilist, rel->indexlist)
{
IndexOptInfo *index = (IndexOptInfo *) lfirst(ilist);
List *restrictclauses;
@ -1435,10 +1432,10 @@ index_innerjoin(Query *root, RelOptInfo *rel, IndexOptInfo *index,
/*
* Note that we are making a pathnode for a single-scan indexscan;
* therefore, both indexid and indexqual should be single-element
* therefore, both indexinfo and indexqual should be single-element
* lists.
*/
pathnode->indexid = makeListi1(index->indexoid);
pathnode->indexinfo = makeList1(index);
pathnode->indexqual = makeList1(indexquals);
/* We don't actually care what order the index scans in ... */
@ -2030,7 +2027,6 @@ find_operator(const char *opname, Oid datatype)
static Datum
string_to_datum(const char *str, Oid datatype)
{
/*
* We cheat a little by assuming that textin() will do for bpchar and
* varchar constants too...