public static HashSet<QuestionTagRelation> getQuestionTagRelationRowsWithQuestionNo(
            String questionNo) {
        Connection conn = ConnectionManager.getInstance().getConnection();
        
        String sql = "{call selectQuestionTagRelationRowsWithQuestionNo(?)}";
        ResultSet rs = null;

        try (PreparedStatement stmt = conn.prepareStatement(sql);) {
            stmt.setString(1, questionNo);
            rs = stmt.executeQuery();

            HashSet<QuestionTagRelation> hashSet = new HashSet<QuestionTagRelation>();

            while (rs.next()) {
                QuestionTagRelation questionTagRelationEntity = new QuestionTagRelation();
                questionTagRelationEntity.setQuestionNo(rs
                        .getString("questionNo"));
                questionTagRelationEntity.setTagNo(rs.getString("tagNo"));

                hashSet.add(questionTagRelationEntity);
            }

            return hashSet;

        } catch (SQLTransientConnectionException SQLtce) {
            return getQuestionTagRelationRowsWithQuestionNo(questionNo);
        } catch (SQLTransientException SQLte) {
            return getQuestionTagRelationRowsWithQuestionNo(questionNo);
        } catch (SQLException e) {
            System.err.println(e);
            return null;
        } finally {
            try {
                if (rs != null) {
                    rs.close();
                }
                conn.close();
            } catch (SQLException e) {
                System.err.println(e);
            }
        }
    }