如何为此编写存储过程

问题描述

ar cnt = values.Count(); List<AttributeDTO> lst = null;
                   List<AttributeDTO> lst1 = new List<AttributeDTO>();
                   List<pic_attr_value> pids = context.pic_attr_value.GroupBy(x => x.product_id)
                               .Select(g => g.FirstOrDefault())
                               .ToList();

                       foreach (var item in pids)
                   {


                       for (var i = 0; i < cnt; i++)

                       {

                           var productid = item.product_id;

                           var att = values[i]; var attl = values1[i];

                           var count = context.pic_attr_value.Count(a => a.attr_id == att && a.attr_lov_id == attl && a.product_id == productid);
                           if (count == 0) break;
                           if (i == cnt - 1)
                           {
                               var pavs = context.pic_attr_value.Where(a => a.attr_id == att && a.attr_lov_id == attl && a.product_id == productid).ToList();
                               lst = new List<AttributeDTO>();
                               foreach (var pav in pavs)
                               {
                                   var attr = new AttributeDTO();
                                   var st = context.pic_product.SingleOrDefault(a => a.product_id == pav.product_id);
                                   if (st != null) { attr.AttrName = st.part_number; attr.temp = st.part_description; }
                                   lst.Add(attr);
                               }


                           } if (lst != null && i == cnt - 1)
                           {
                               lst1.AddRange(lst);
                           }
                       }
                   }
                   return lst1;

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