Merge pull request #123 from ClickHouse/fix/low-cardinality-index

fix(proto): handle index out of range in low cardinality
ClickHouse · Jun 14, 2022 · a878abf · a878abf
2 parents 56f0ebd + fe50213
commit a878abf
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/proto/col_low_cardinality.go b/proto/col_low_cardinality.go
@@ -185,6 +185,9 @@ func (c *ColLowCardinality[T]) DecodeColumn(r *Reader, rows int) error {
 
 	c.Values = c.Values[:0]
 	for _, idx := range c.keys {
+		if int64(idx) >= indexRows {
+			return errors.Errorf("key index out of range [%d] with length %d", idx, indexRows)
+		}
 		c.Values = append(c.Values, c.index.Row(idx))
 	}