Hi,
I think the following commit:
commit c6e4133fae1fde93769197379ffcc2b379845113
Author: Tom Lane <t...@sss.pgh.pa.us>
Date: Wed Nov 7 12:12:56 2018 -0500
Postpone calculating total_table_pages until after pruning/exclusion.
...
obsoleted a sentence in the comment above index_pages_fetched(), which says:
* "index_pages" is the amount to add to the total table space, which was
* computed for us by query_planner.
total_table_pages is computed by make_one_rel as of the aforementioned
commit. Attached fixes this.
Thanks,
Amit
diff --git a/src/backend/optimizer/path/costsize.c
b/src/backend/optimizer/path/costsize.c
index beee50ec13..4b9be13f08 100644
--- a/src/backend/optimizer/path/costsize.c
+++ b/src/backend/optimizer/path/costsize.c
@@ -815,7 +815,7 @@ extract_nonindex_conditions(List *qual_clauses, List
*indexclauses)
* product rather than calculating it here. "pages" is the number of pages
* in the object under consideration (either an index or a table).
* "index_pages" is the amount to add to the total table space, which was
- * computed for us by query_planner.
+ * computed for us by make_one_rel.
*
* Caller is expected to have ensured that tuples_fetched is greater than zero
* and rounded to integer (see clamp_row_est). The result will likewise be
