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Commit4b89126

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Fix bogus EXPLAIN display of rowcount estimates for BitmapAnd and
BitmapOr nodes.
1 parentbc843d3 commit4b89126

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1 file changed

+19
-15
lines changed

1 file changed

+19
-15
lines changed

‎src/backend/optimizer/plan/createplan.c

Lines changed: 19 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -10,7 +10,7 @@
1010
*
1111
*
1212
* IDENTIFICATION
13-
* $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.183 2005/04/22 21:58:31 tgl Exp $
13+
* $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.184 2005/04/23 01:29:15 tgl Exp $
1414
*
1515
*-------------------------------------------------------------------------
1616
*/
@@ -941,7 +941,10 @@ create_bitmap_subplan(Query *root, Path *bitmapqual)
941941
newlist=lappend(newlist,subplan);
942942
}
943943
plan= (Plan*)make_bitmap_and(newlist);
944-
copy_path_costsize(plan,bitmapqual);
944+
plan->startup_cost=apath->path.startup_cost;
945+
plan->total_cost=apath->path.total_cost;
946+
plan->plan_rows=
947+
clamp_row_est(apath->bitmapselectivity*apath->path.parent->tuples);
945948
plan->plan_width=0;/* meaningless */
946949
}
947950
elseif (IsA(bitmapqual,BitmapOrPath))
@@ -957,31 +960,32 @@ create_bitmap_subplan(Query *root, Path *bitmapqual)
957960
newlist=lappend(newlist,subplan);
958961
}
959962
plan= (Plan*)make_bitmap_or(newlist);
960-
copy_path_costsize(plan,bitmapqual);
963+
plan->startup_cost=opath->path.startup_cost;
964+
plan->total_cost=opath->path.total_cost;
965+
plan->plan_rows=
966+
clamp_row_est(opath->bitmapselectivity*opath->path.parent->tuples);
961967
plan->plan_width=0;/* meaningless */
962968
}
963969
elseif (IsA(bitmapqual,IndexPath))
964970
{
965971
IndexPath*ipath= (IndexPath*)bitmapqual;
966972
IndexScan*iscan;
967-
BitmapIndexScan*bscan;
968973

969974
/* Use the regular indexscan plan build machinery... */
970975
iscan=create_indexscan_plan(root,ipath,NIL,NIL);
971976
Assert(list_length(iscan->indxid)==1);
972977
/* then convert to a bitmap indexscan */
973-
bscan=make_bitmap_indexscan(iscan->scan.scanrelid,
974-
linitial_oid(iscan->indxid),
975-
linitial(iscan->indxqual),
976-
linitial(iscan->indxqualorig),
977-
linitial(iscan->indxstrategy),
978-
linitial(iscan->indxsubtype));
979-
bscan->scan.plan.startup_cost=0.0;
980-
bscan->scan.plan.total_cost=ipath->indextotalcost;
981-
bscan->scan.plan.plan_rows=
978+
plan= (Plan*)make_bitmap_indexscan(iscan->scan.scanrelid,
979+
linitial_oid(iscan->indxid),
980+
linitial(iscan->indxqual),
981+
linitial(iscan->indxqualorig),
982+
linitial(iscan->indxstrategy),
983+
linitial(iscan->indxsubtype));
984+
plan->startup_cost=0.0;
985+
plan->total_cost=ipath->indextotalcost;
986+
plan->plan_rows=
982987
clamp_row_est(ipath->indexselectivity*ipath->path.parent->tuples);
983-
bscan->scan.plan.plan_width=0;/* meaningless */
984-
plan= (Plan*)bscan;
988+
plan->plan_width=0;/* meaningless */
985989
}
986990
else
987991
{

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