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  • 根据会员编号、会员名称、会员积分、店铺编号查询数据的简单方法(sql语句)

    /// <summary>
            /// 根据会员编号、会员名称、会员积分、店铺编号查询数据
            /// </summary>
            /// <param name="bianhao">会员编号</param>
            /// <param name="username">会员名称</param>
            /// <param name="jifen">会员积分</param>
            /// <param name="id_shop">店铺编号</param>
            /// <returns>返回一个dataset</returns>
            public DataSet getList(string bianhao, string username, int jifen, int id_shop)
            {
                StringBuilder strSql = new StringBuilder();
                strSql.Append(" SELECT h.*,s.name as shopname,l.username as loginname");
                strSql.Append(" FROM huiyuan h");
                strSql.Append(" LEFT JOIN shop s ON h.id_shop = s.id");
                strSql.Append(" LEFT JOIN login l ON h.id_login = l.id");
                strSql.Append(" where 1 = 1 ");
                if (bianhao != string.Empty)
                {
                    strSql.Append(" and h.bianhao like '%"+bianhao+"%'");
                }
                if (username != string.Empty)
                {
                    strSql.Append(" and h.username like '%" + username + "%'");
                }
                if (jifen != -1)
                {
                    if (jifen == 0)
                    {
                        strSql.Append(" and h.jifen < 0");
                    }
                    if (jifen == 500)
                    {
                        strSql.Append(" and (h.jifen >= 0 and h.jifen <500)");
                    }
                    if (jifen == 1000)
                    {
                        strSql.Append(" and (jifen >= 500 and jifen <1000) ");
                    }
                    if (jifen == 5000)
                    {
                        strSql.Append(" and (jifen >= 1000 and jifen <5000) ");
                    }
                    if (jifen == 10000)
                    {
                        strSql.Append(" and (jifen >= 5000 and jifen <10000) ");
                    }
                    if (jifen == 10001)
                    {
                        strSql.Append(" and jifen >= 10000 ");
                    }
                }
                if (id_shop != 0)
                {
                    strSql.Append(" and h.id_shop = " + id_shop);
                }
                return DbHelperSQL.Query(strSql.ToString());
            }

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  • 原文地址:https://www.cnblogs.com/linling/p/3169616.html
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