wip: opt: do not use histograms for constrains outside the min and max

cockroachdb · Jan 23, 2025 · 43bfd76 · 43bfd76
1 parent 97224b4
commit 43bfd76
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/pkg/sql/opt/memo/statistics_builder.go b/pkg/sql/opt/memo/statistics_builder.go
@@ -4000,6 +4000,9 @@ func (sb *statisticsBuilder) updateHistogram(
 	if inputHist != nil && ok {
 		if _, _, ok := inputHist.CanFilter(sb.ctx, c); ok {
 			colStat.Histogram = inputHist.Filter(sb.ctx, c)
+			if colStat.Histogram.ValuesCount() == 0 {
+				return false
+			}
 			sb.updateDistinctCountFromHistogram(colStat, inputStat.DistinctCount)
 			return true
 		}