2. Using SqlMethods.Like method Digging intoSystem.Data.Linq.SqlClientnamespace, I found a little helper class calledSqlMethods, which can be very usefull in such scenarios. SqlMethods has a method called Like,
The query that will be sent to the database will be: SELECT CustomerID, CompanyName, ... FROM dbo.Customers WHERE City = [London] There are some ways to write a Linq query that reaults in using Like Operator in the SQL statement: 1. Using String.StartsWith or String.Endswith Writing...
string Operator = Convert.ToBoolean(isTrue) ? "in" : " not in"; string CompName = string.Join(",", SetInPara); string Result = string.Format("{0} {1} ({2})", Name, Operator, CompName); returnResult; } private stringLike(MethodCallExpression expression) { object Temp_Vale = (...
表.Where(m=>m.列==null)//转换后的sql语句便是SELECT字段……FROM表AS[t0]WHERE[t0].列ISNULL 特殊情况下 我们像如下这样写linq查询 代码语言:javascript 代码运行次数:0 运行 AI代码解释 int?a=null;表.Where(m=>m.列==a);// 转换成的sql语句便是这样了DECLARE@p0 Int=nullSELECT字段……FROM表AS...
The purpose of the DataContext is to translate your requests for objects into SQL queries made against the database and then assemble objects out of the results. The DataContext enables language-integrated query by implementing the same operator pattern as the standard query operators such as Where...
The Like operator effectively acquires automatic overloads based on implicit conversions. Although the Like operator is defined to operate on character string types, implicit conversion from numeric types orDateTimetypes allows for those non-string types to be used with Like just as well. In CTS,...
The following table classifies each standard query operator method according to its method of execution. Note If an operator is marked in two columns, two input sequences are involved in the operation, and each sequence is evaluated differently. In these cases, it is always the first sequence ...
Next is another use of LINQ in C#, except this time the more standard syntax is used to call the LINQ API. The approach also involves use of the lambda operator >. The following C# query is functionally equivalent to the preceding C# query....
SQL Microsoft StreamInsight Microsoft StreamInsight 2.1 Microsoft StreamInsight 类库 Microsoft.ComplexEventProcessing.Linq 命名空间 CepGroupingStreams(TPayload, TGroupingKey) 类 CepGroupingStreams(TPayload, TGroupingKey) 方法 ApplyWithUnion 方法 Cep...
在Visual Basic 和 C# 中,您可以对IQPartitionedStreamable<TKey, TSource> 类型的任何对象将此方法作为实例方法调用。在您使用实例方法语法调用此方法时,将忽略第一个参数。有关详细信息,请参阅https://msdn.microsoft.com/zh-cn/library/bb384936(v=sql.111)或https://msdn.microsoft.com/zh-cn/library/bb...