Method ExprValueNull

be/src/exec/hash-table.h:202–204

  /// Returns if the expression at 'expr_idx' is evaluated to NULL for the current row.
  bool ALWAYS_INLINE ExprValueNull(int expr_idx) const {
    return static_cast<bool>(*(expr_values_cache_.cur_expr_values_null() + expr_idx));
  }

  /// Evaluate and hash the build/probe row, saving the evaluation to the current row of
  /// the ExprValuesCache in this hash table context: the results are saved in