一对多原生sql查询

[hyke123]

SqlQueryable 或者Ado.SqlQuery 连表一对多的查询结果怎么映射到类的集合属性上

[DotNetNext]

SQL本来就不支持一对查询吧 ，你的SQL是什么样的

[DotNetNext]

db.Ado.SqlQuery<T1,T2>("select 1 from xx; select xx from yy") 目前ADO查询只有这种多条SQL一起映射

[hyke123]

可能是我表述的不够清楚 想要的效果就是类似dapper这种

[DotNetNext]

    var twoClass = db.Queryable<Order, OrderItem, Custom>((o, i, c) => new JoinQueryInfos(
            JoinType.Left, o.Id == i.OrderId,
            JoinType.Left, o.CustomId == c.Id
            ))
           .Select((o, i, c) => new { o,i}).ToList();

生成的SQL SELECT [o].[Id] AS [Order.Id] , [o].[Name] AS [Order.Name] , [o].[Price] AS [Order.Price] , [o].[CreateTime] AS [Order.CreateTime] , [o].[CustomId] AS [Order.CustomId] , [i].[ItemId] AS [OrderItem.ItemId] , [i].[OrderId] AS [OrderItem.OrderId] , [i].[Price] AS [OrderItem.Price] , [i].[CreateTime] AS [OrderItem.CreateTime] FROM [Order] o Left JOIN [OrderDetail] i ON ( [o].[Id] = [i].[OrderId] ) Left JOIN [Custom] c ON ( [o].[CustomId] = [c].[Id] )

[DotNetNext]

    var twoClass = db.Queryable<Order, OrderItem, Custom>((o, i, c) => new JoinQueryInfos(
            JoinType.Left, o.Id == i.OrderId,
            JoinType.Left, o.CustomId == c.Id
            ))
           .Select((o, i, c) => new { o,i}).ToList();

生成的SQL SELECT [o].[Id] AS [Order.Id] , [o].[Name] AS [Order.Name] , [o].[Price] AS [Order.Price] , [o].[CreateTime] AS [Order.CreateTime] , [o].[CustomId] AS [Order.CustomId] , [i].[ItemId] AS [OrderItem.ItemId] , [i].[OrderId] AS [OrderItem.OrderId] , [i].[Price] AS [OrderItem.Price] , [i].[CreateTime] AS [OrderItem.CreateTime] FROM [Order] o Left JOIN [OrderDetail] i ON ( [o].[Id] = [i].[OrderId] ) Left JOIN [Custom] c ON ( [o].[CustomId] = [c].[Id] )

[DotNetNext]

不用SQL用联表查询是可以的

[DotNetNext]

   var x= db.SqlQueryable<dynamic>("SELECT  [o].[Id] AS [Order.Id] , [o].[Name] AS [Order.Name] , [o].[Price] AS [Order.Price] , [o].[CreateTime] AS [Order.CreateTime] , [o].[CustomId] AS [Order.CustomId] , [i].[ItemId] AS [OrderItem.ItemId] , [i].[OrderId] AS [OrderItem.OrderId] , [i].[Price] AS [OrderItem.Price] , [i].[CreateTime] AS [OrderItem.CreateTime]  FROM [Order] o Inner JOIN [OrderDetail] i ON ( [o].[Id] = [i].[OrderId] )")
               .Select(it=>new {  o=new Order(),i=new OrderItem()})
               .Select("*").ToList();

有方案了 这样命名可以自动映射

[DotNetNext]

https://www.donet5.com/Home/Doc?typeId=1197 文档也更新了