             const col_type current_value = current_column[row_index];
             hash_value_t key_hash = hasher(current_value);
             hash_value = hasher.hash_combine(hash_value, key_hash);
+            break;
           }
         case GDF_TIMESTAMP:
           {

            const col_type current_value = current_column[row_index];
            hash_value_t key_hash = hasher(current_value);
            hash_value = hasher.hash_combine(hash_value, key_hash);
          }
        case GDF_DATE32:
          {

            const col_type current_value = current_column[row_index];
            hash_value_t key_hash = hasher(current_value);
            hash_value = hasher.hash_combine(hash_value, key_hash);
            break;
          }
        case GDF_FLOAT64:
          {
