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Be more realistic about plans involving Materialize nodes: take their

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cost into account while planning.
This commit is contained in:
Tom Lane
2002-11-30 05:21:03 +00:00
parent 829cedc8cf
commit 935969415a
19 changed files with 320 additions and 160 deletions
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21
src/backend/optimizer/path/allpaths.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.92 2002/11/13 00:39:47 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.93 2002/11/30 05:21:02 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -724,33 +724,34 @@ static void
print_path(Query *root, Path *path, int indent)
{
const char *ptype;
bool join;
bool join = false;
Path *subpath = NULL;
int i;
switch (nodeTag(path))
{
case T_Path:
ptype = "SeqScan";
join = false;
break;
case T_IndexPath:
ptype = "IdxScan";
join = false;
break;
case T_TidPath:
ptype = "TidScan";
join = false;
break;
case T_AppendPath:
ptype = "Append";
join = false;
break;
case T_ResultPath:
ptype = "Result";
join = false;
subpath = ((ResultPath *) path)->subpath;
break;
case T_MaterialPath:
ptype = "Material";
subpath = ((MaterialPath *) path)->subpath;
break;
case T_NestPath:
ptype = "Nestloop";
ptype = "NestLoop";
join = true;
break;
case T_MergePath:
@ -763,7 +764,6 @@ print_path(Query *root, Path *path, int indent)
break;
default:
ptype = "???Path";
join = false;
break;
}
@ -814,6 +814,9 @@ print_path(Query *root, Path *path, int indent)
print_path(root, jp->outerjoinpath, indent + 1);
print_path(root, jp->innerjoinpath, indent + 1);
}
if (subpath)
print_path(root, subpath, indent + 1);
}
void