Changeset: 49b4323ea481 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/49b4323ea481
Modified Files:
gdk/gdk_join.c
Branch: Mar2025
Log Message:
#uniques in join output does not depend on #uniques in inputs.
Instead it depends on the lengths of the inputs, but we'll skip that for
now.
diffs (25 lines):
diff --git a/gdk/gdk_join.c b/gdk/gdk_join.c
--- a/gdk/gdk_join.c
+++ b/gdk/gdk_join.c
@@ -3267,7 +3267,6 @@ hashjoin(BAT **r1p, BAT **r2p, BAT **r3p
}
/* also set other bits of heap to correct value to indicate size */
BATsetcount(r1, BATcount(r1));
- r1->tunique_est = MIN(li.unique_est, ri.unique_est);
if (BATcount(r1) <= 1) {
r1->tsorted = true;
r1->trevsorted = true;
@@ -3283,13 +3282,11 @@ hashjoin(BAT **r1p, BAT **r2p, BAT **r3p
r2->tkey = true;
r2->tseqbase = 0;
}
- r2->tunique_est = MIN(li.unique_est, ri.unique_est);
}
if (r3) {
r3->tnonil = !r3->tnil;
BATsetcount(r3, BATcount(r3));
assert(BATcount(r1) == BATcount(r3));
- r3->tunique_est = MIN(li.unique_est, ri.unique_est);
}
bat_iterator_end(&li);
bat_iterator_end(&ri);
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