Revert "Remove troublesome Asserts in cost_mergejoin()."

tglsfdc · tglsfdc · commit 2ae2e9c00798 · 2011-12-30T17:58:15.000-05:00
This reverts commit ff68b25. The recent change to use -fexcess-precision=standard should make those Asserts safe, and does fix a test case that formerly crashed for me, so I think there's no need to have a cross-version difference in the code here.
diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c
@@ -1925,6 +1925,9 @@ cost_mergejoin(MergePath *path, PlannerInfo *root, SpecialJoinInfo *sjinfo)
 	outerendsel = outer_rows / outer_path_rows;
 	innerendsel = inner_rows / inner_path_rows;
 
+	Assert(outerstartsel <= outerendsel);
+	Assert(innerstartsel <= innerendsel);
+
 	/* cost of source data */
 
 	if (outersortkeys)			/* do we need to sort outer? */
