应该类似如下Linq (from c in 收藏表上下文 group c by c.产品ID into g orderby g.Count() descending select new { A=g.Key,B=g.Count()} ).Take(10)--- sql SELECT TOP (10) [t1].[产品ID] AS [A], [t1].[value] AS [B]FROM (SELECT COUNT(*) AS [value],[t0].[产...
.Skip(10) .Take(10); SELECT TOP (10) [Extent1].[ProductID] AS [ProductID], [Extent1].[ProductName] AS [ProductName] FROM ( SELECT [Extent1].[ProductID] AS [ProductID], [Extent1].[ProductName] AS [ProductName], row_number() OVER (ORDER BY [Extent1].[ProductID] ASC) AS [...
select top 10 * from [td].[Task] order by newid() : sql server 是这样写, linq :???求教 不负相思意 浏览1012回答1 1回答蛊毒传说Questions.OrderBy(q=>Guid.NewGuid()).Take(6)0 0 0 没找到需要的内容?换个关键词再搜索试试 向你推荐 10个数随机分布算法 随机获取10个不相同的整数 java-mo...
SELECT [Id] FROM [dbo].[Crm_CustomerTodo] WHERE @@ROWCOUNT > 0 AND [Id] = scope_identity()',N'@0 bigint,@1 bigint,@2 datetime2(7),@3 datetime2(7),@4 datetime2(7),@5 datetime2(7),@6 int,@7 int,@8 int,@9 int,@10 int,@11 nvarchar(max) ',@0=80242,@1=0,@2='...
Select top 1操作简化: 在Linq中,使用Select操作可以选择指定的字段,使用Take操作可以选择指定数量的记录。为了简化Select top 1操作,可以使用FirstOrDefault方法,该方法接受一个Lambda表达式作为参数,用于指定选择的条件。例如: 代码语言:csharp 复制 var topRecord = data.FirstOrDefault(x => x.Category =...
、、 我有一个问题,我知道如何在SQL中解决,但不知道如何使用Linq to Entities。(而不仅仅是ID),以便只从每个组中获取最近的记录。(即ids为2、5、6的记录)SELECT * FROM my_table a (SELECT MAX(timestamp)FROM my_table b WHERE a.group = b.gr 浏览0提问于2011-07-05得票数 4 回答已采纳 ...
简介:本篇文章我们将演示LINQ扩展包的基础语法,以Select查询、Count计数、Average平均值、OrderBy排序函数为例,目前LINQ支持两种语法,我会在每个案例前先用大家熟知的SQL语句表达,再在后面用C#的两种LINQ语法分别实现。LINQ语法第一次接触难免感到陌生,最好的学习方式就是在项目中多去使用,相信会有很多感悟。
Select 子句 選擇性。Select子句宣告一組查詢的反覆運算變數。 例如: VB ' Returns the company name and ID value for each' customer as a collection of a new anonymous type.DimcustomerList =FromcustIncustomersSelectcust.CompanyName, cust.CustomerID ...
Name := 'Robert'; //Select top and Order by field for user in TLinq<TUser>.From(userlist).Where('Age > ?',[18]).SelectTop(10).OrderBy('Name') do begin //do something end; //update fields by conditional TLinq<TUser>.From(userlist).Where('Name = ?',['Peter']).Update([...
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] ) AS [t2] WHERE [t0].[Cust...