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linq sql in

T-SQL的 IN:Select ProductID, ProductName, CategoryIDFrom dbo.ProductsWhere CategoryID in (1, 2)T-SQL的 NOT IN:Select ProductID, ProductName, CategoryIDFrom dbo.ProductsWhere CategoryID not in (1, 2)//-------------------------...

一个例子,仅供参考. int[] mainlst = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 }; int[] querylst = { 1, 3, 5 }; var query = from data in mainlst where querylst.Contains(data) select data;

select TOP 4*from Examine where ExamineLevel not in(select LinkLevel from Link where LinkClubId==3) --not in 把where条件改成不等于3就好啦 and ExamineTypeId not in(select LinkExamineTypeId from Link where LinkClubId==3 ) --not i...

用contain 应该能达到你要的效果吧 比如有个List list 里面是id from o in table where list.Contain(o.id) select o

可以 比如 [字段]in(1,2,3) Linq可用 List.Contains(字段)这样的语法

参考代码(注意黑色部分)using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Xml; using System.Net; using System.IO; using System.Data; using System.Reflection; using System.Collect...

例子: -- SQL --DECLARE @p1 NVarChar(8); DECLARE @p0 NVarChar(7); Select @p1 = 'Johnson'; Select @p0 = 'Anderson'; -- Context: SqlProvider(Sql2005) Model: AttributedMetaModel Build: 3.5.21022.8 SELECT [t0].[Id], [t0].[FirstName...

StuDBDataContext db = new StuDBDataContext(); var query = stuInfo.Where(x => !StuMarks.Select(y => y.stuNo).Contains(x.stuNo)); //select * from stuInfo where stuNo not in(select stuNo from StuMarks) foreach (var c in result) { ...

linq语句是 from p in username where p.IndexOf("王") == 0 select p; 这里的username代表查询对象,p是随意的,它可以是任何字符(p in username 表示p是username的元素)。 p.IndexOf("王") == 0 查询不以”王“开头的数据。

var q = from c in db.Customers where c.City == "London" select c 等价于SQL语句 select * from db.Customers c where c.City = "London" 然后把记录集赋给变量q foreach (var v in q) 表示记录集q里的每一条记录v要执行下马{}里的操作

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