实现查询与存储过程编译转换

使用标准查询可方便将查询编译为存储过程,以后再查询时会匹配对应的存储过程进行调用

方法原型

 1 /// <summary>
 2         /// 使用lamada设置条件查询
 3         /// </summary>
 4         /// <typeparam name="TItem"></typeparam>
 5         /// <param name="expression"></param>
 6         /// <param name="compileSp">是否编译成储过程</param>
 7         /// <returns></returns>
 8         public List<TItem> QueryList<TItem>(Expression<Func<TItem, bool>> expression =null, bool compileSp = false) where TItem : IModelBase, new()
 9         {
10             LamadaQuery<TItem> query = new LamadaQuery<TItem>();
11             query = query.Select(b => b.SelectField()).Where(expression);
12             string key;
13             return QueryList<TItem>(query, 0, out key, compileSp);
14         }

调用:

public List<ProductReceiptDetail> QueryDetail(string batchNo)
        {
            var helper = dbHelper;
            var list = helper.QueryList<ProductReceiptDetail>(b => b.BatchNo == batchNo,compileSp:true);
            return list;
        }

编译转换后的存储过程类似如下:

1  CREATE PROCEDURE [dbo].ZautoSp_1114C09A54B9CFAF
2 (@0AccountId nvarchar(500),@1TradeType nvarchar(500),@3Hash nvarchar(500))
3 AS
4 set  nocount  on
5     select top 1 t1.AccountId,t1.AddTime,t1.Amount,t1.CurrentBalance,t1.Hash,t1.Id,t1.LastBalance,t1.Name,t1.OperateType,t1.OutOrderId,t1.Remark,t1.TradeType,t1.TransactionNo,t1.TransactionType from [AccountTransaction] as t1 with (nolock)  where (((t1.AccountId=@0AccountId) AND (t1.TradeType=@1TradeType)) AND (t1.Hash=@3Hash)) order by  t1.Id desc

当然也可以用原生SQL直接转换:

public List<dynamic> GetSum(int storeId)
        {
            var helper = dbHelper;
            string sql = "select sum(TotalNum) Num,sum(OrderAmount) Amount,datepart(month,AddTime) Month from OrderMain where AddTime  between dateadd(month,datediff(month,-1,getdate())-7,-1) and dateadd(month,datediff(month,-1,getdate())-1,-1) and OwnerId = @storeId and [Status] = @status group by datepart(month,AddTime) ";
            helper.AddParam("storeId", storeId);
            helper.AddParam("Status", OrderStatus.已确认收货);
            return helper.AutoSpQueryDynamic(sql);
        }

实现查询与存储过程编译转换