10. 不要滥用CompiledQuery 方法,如果你确认某个查询只会执行一遍,那就不要使用CompiledQuery来了,使用它也是需要付出代价的。 最后希望这些技巧对你有用。欢迎发表评论。 本文是翻译文章; 原文请看http://www.sidarok.com/web/blog/content/2008/05/02/10-tips-to-improve-your-linq-to-sql-application-perfo...
object creations, and pressure on the garbage collector. The additional cost of using LINQ can vary a lot depending on the query. It can be as low as 5 percent, but can sometimes be around 500 percent.
actually creating the compiled query with Query.Compile hardly does anything at all, it's all deferred until the query is run just as it would have been had the
In complex queries that make multiple connections to the database and have to translate the LINQ code to SQL for each query appear to cause some performance issues. The performance of calling stored procedures and stored functions from LINQ is not that much different from the data layer query. ...
LINQ to SQLIn LINQ to SQL it becomes metod as you drag and drop it to .dbml file,using (NorthwindDataContext db = new NorthwindDataContext()){var outPut = db.SalesByCategory("SeaFood", "1998");}Performance of LINQ to SQL and ADO.NET...
Alternatively, you could specify the namespace in the property window of the LINQ to SQL and the Entity Framework visual component designers. Here I am making a choice to generate entities both for LINQ to SQL and the Entity Framework, converting the query results to DTOs. There is also the...
LINQ to SQL is language-agnostic. Any language built to provide Language-Integrated Query can use it to enable access to information stored in relational databases. The samples in this document are shown in both C# and Visual Basic; LINQ to SQL can be used with the LINQ-enabled version of ...
意見 Noticias externas 2008年1月14日 Check it out and see if you know the answer. Rico's Performance Tidbits...( read more ) LINQ in Action roller 2008年1月14日 Check it out and see if you know the answer. Rico's Performance Tidbits...( read more )...
Query expression overview Query expressions query and transform data from any LINQ-enabled data source. For example, a single query can retrieve data from an SQL database and produce an XML stream as output. Query expressions use many familiar C# language constructs, which make them easy to read...
Expression<Func<TSource, TElement>>, Expression<Func<TKey, IEnumerable<TElement>, TResult>>, IEqualityComparer<TKey>) itself as a constructed generic method. It then passes theMethodCallExpressionto theCreateQuery<TElement>(Expression)method of theIQueryProviderrepresented by theProviderproperty of ...