在基于逻辑测试的Select Linq Query中创建新列 我想使用Vb.net将这个100%工作的SQL查询转换为Linq查询。谢谢 SELECT TOP (100) PERCENT Level3.L2_ID, DATEDIFF(day, Level3.ACT_DATE, BaseLine.ACT_DATE) AS Diff, CASE WHEN datediff(day, Level3.ACT_Date, Baseline.ACT_Date) >0 THEN 1 END AS Green...
上面 语句描述:使用SELECT和匿名类型返回仅含雇员姓名和电话号码的序列,并将FirstName和LastName字段合并为一个字段“Name”,此外在所得的 序列中将HomePhone字段重命名为Phone。 var q = from p in db.Products select new { p.ProductID, HalfPrice = p.UnitPrice / 2 }; 上面语句描述:使用SELECT和匿名类型...
在某个客户那部署后发现,这个方法执行的效率很低,监控发现数据从数据库查询出来 很快(因为数据库单独一台服务器) 然后通过top查看服务器的CPU就跑到了100%.内存正常,查了下CPU的型号 emm...很烂 但是好在核心很多(毕竟服务器级的U).. 查看服务器核心数 是在16个. Linux用top命令看的话,理论上CPU跑到1600%...
select ci; foreach (CustomerInfo ci in query) { Console.WriteLine("姓名:{0} 年龄:{1} 电话:{2}", ci.Name, ci.Age, ci.Tel); } } 结果: 姓名:欧阳晓晓 年龄:35 电话:1330708*** 姓名:诸葛菲菲 年龄:23 电话:1380524*** 2.2 复合from子句 在查询数据源中,元素的属性是一个集合时,可以使用...
select new { 订单号= o.OrderID, 是否超重= o.Freight > 100 ? "是" : "否" }; 对应SQL: SELECT [t0].[OrderID], (CASE WHEN [t0].[Freight] > @p0 THEN @p1 ELSE @p2 END) AS [value] FROM [dbo].[Orders] AS [t0] -- @p0: Input Currency (Size = 0; Prec = 19; Scale =...
SELECT TOP 1 [t0].[CustomerID], [t0].[CompanyName], FROM [Customers] AS [t0] WHERE (NOT (EXISTS( SELECT NULL AS [EMPTY] FROM ( SELECT TOP 1 [t1].[CustomerID] FROM [Customers] AS [t1] WHERE [t1].[City] = @p0 ORDER BY [t1].[CustomerID] ...
filter: invert(100%); /* apply a filter to Login page's logo */ margin-left: -81px; /* outdent Login page's logo */ } Note: if you run Linqa in development mode (via webpack-dev-server) stylesheet loading order is different. In order to see effect while development you might ...
通过top命令,可以明显的监听到CPU的使用情况 在跑第一个循环的时候,CPU 100%,单核吃满,如图: 跑第二个循环的时候,第2颗CPU就开始参与进来了,如图: 所以在合适的情况下(注意,这里是合适的情况) 程序中采用并行任务库充分的利用服务器的多核性能可以使运行效率有很大的提升. ...
Vegas Foto 100 m Mac King 110 m Distances shown are straight-line distances on the map. Actual travel distances may vary. Property policies Children and extra beds Extra beds are dependent on the room you choose. Please check the individual room capacity for more details. All children are wel...
C# advanced socket server - 100% CPU usage after some time C# and Excel. Passing decimal values to excel from C# loose format C# and Lotus Notes C# and packages? C# and using Microsoft.VisualBasic.Devices C# and WPF, what's the difference? C# app can't find DLL in the same directory...