Linq Except Performance


One small caution when using LINQ, especially in performance critical areas (XNA for instance):. Then I'll show a new graph depicting the performance profile both with a cold cache and a warm cache. However, I would personally still use LINQ in instances where I am working with a small amount of data and the performance difference is negligible. PRAGIM is known for placements in major IT companies. It manages the relational data as an object. By default, LINQ to SQL enables Object Tracking, which controls the automatic change tracking and identity management of objects retrieved from the database. Find the best prices on Jimmy Kimmel's Comedy Club tickets and get detailed customer reviews, videos, photos, showtimes and more at Vegas. Boxing and Collections; Unusual Ways of Boosting Up App Performance. So here I'm saying take numbers and then, the oddNumbers, and find the differences. Can query any collection implementing IEnumerable Equivalent to Iterable[T] in Scala. In SQL Server Management Studio 2017 Except All is. I investigated this issue. For all wondering what are the things a C# developer should and should not do. net The performance implications of IEnumerable vs. I'm not going to try to give more than a brief introduction to it here - don't expect to be able to whip up your own LINQ to SQL implementation afterwards - but it's worth at least having an idea of what happens when you use something like LINQ to SQL, NHibernate or the Entity Framework. March 31, 2009. Ask Question except that you don't Multi threading in ASP. All of a sudden we started to see a weird exception in our intranet "System. The performance counters monitored the entire system, which was in an idle state (except for the current process), which captured the file read and write external to the test process. 4 GHz) and 32 GB DDR4 2133MHz. 5 is out with all its LINQ query operator goodness, I feel like going on a mean streak of trashing a lot of o. NET Microsoft LINQ. Like most "new" areas of a language, it can be difficult to find the time or motivation to delve into the capabilities it provides, but I've just had it proven to me that I should have taken the plunge months ago. By Peter Vogel; 02/13/2017. If you're using Entity Framework, you'll need the complete LINQKit - for the AsExpandable functionality. In my sample code you will get all above mentioned ways except last one. A look at STL/CLR performance for linear containers. Last but not least, Olivia provides tips for optimizing the performance of your. The insert performance of my current application is the worst bottleneck, so I created a test to insert 60000 records into a SQL Server 2005 table. Except for therapeutic. LINQ to XML - Provides an in-memory XML programming interface. Unfortunately though it doesn't work in. Improving LINQ Except and Intersect by using a lambda expression for custom comparison August 14, 2009 Akshay Luther 2 Comments I was recently doing some work where I had to use Except and Insersect, but with some custom comparison logic. Entity SQL, as an alternative to LINQ, querying the Entity Framework. This provides strong typing, syntax checking, intellisense over SQL objects, while retaining the expressive power of the relational model and the performance of query evaluation directly in the underlying database. LINQ Tutorial Introduction. Note: Hashset is a collection of. LINQ’s CPU performance is quite poor, but how is it with memory? Does every LINQ function always create tons of garbage for the GC to collect, or are there exceptions that aren’t so bad? Today’s article tests out lots of LINQ functions to find out! There are a lot of LINQ functions. Not only High Definition Videos and High Definition Movies but it also got a massive number of TV Shows. Of the 28 real estate stocks tracked by The Real Deal — a. And, regarding LINQ's performance, if one is coding for a high performance back end server application, obviously LINQ is not going to be the tool of choice. I have not read the LINQ to XML and LINQ extensibility sections. I programmed on C# /. 8 June 2013 / enumerable LINQ GroupBy Explanations and Examples. This method returns an IEnumerable of. Get the best deals on Ski-Doo Snowmobile Accessories when you shop the largest online selection at eBay. When installing the VIVID LINQ and AndroidTM tablet units in the vehicle, securely place the device so it does not obstruct the driver’s view of the road or interfere with vehicle operating controls, such as the steering wheel, foot pedals, or transmission levers. Using re-linq, they will hopefully be able to quickly create a provider that surpasses the old one’s capabilities by far. EF Core has a new extension method ThenInclude(). Expression in LINQ. 5 this week. NET Little Wonders: The Enumerable. Language Integrated Query (LINQ, pronounced "link" [citation needed]) is a Microsoft. And, regarding LINQ's performance, if one is coding for a high performance back end server application, obviously LINQ is not going to be the tool of choice. There is a way to obtain the planned behaviour, however. Linq namespace. The book covers LINQ to Objects, LINQ to SQL & LINQ to XML. If you do not agree to this, you may disable cookies in your browser. Your guess was close - the Linq to Objects Except extension method uses a HashSet internally for the second sequence passed in - that allows it to look up elements in O(1) while iterating over the first sequence to filter out elements that are contained in the second sequence, hence the overall effort is O(n+m) where n and m are the length of the input sequences - this is the best you can. This post deals with the LINQ operators and friends as they work on IEnumerable, with the extension methods of the Enumerable class. NET Framework component that adds native data querying capabilities to. Usually we carry set based operation in SQL query. You have access to all tunes in the V-Tech catalog with the purchase of this credit. The SQL EXCEPT operator takes the distinct rows of one query and returns the rows that do not appear in a second result set. The performance counters monitored the entire system, which was in an idle state (except for the current process), which captured the file read and write external to the test process. Each SQL statement within the EXCEPT query and MINUS query must have the same number of fields in the result sets with similar data types. This overload of ToDictionary takes any object that implements the IEnumerable> interface, which is a common return type when invoking LINQ operations on dictionaries, and returns a Dictionary object using the same keys and values as the dictionary in the argument list. I have following method that retrieves the. It all started innocently enough. The "always true" query is basically linear except for the jump in time taken between a depth of 2. So, here the execution of the query is deferred until the query variable is iterated over using for each loop. Sometimes Visual Studio shows multiple messages suggesting I should disable Resharper. After taking a brief look at the performance of each of these, we found that, in most cases, using !Any to generate a NOT EXISTS operator results in a performance boost over the other methods. This is the response that I wrote and thought I would surface it in my blog: Besides that Linq to SQL is only for SQL () one of the big differences is that the EDM is more flexible and more loosely. Now, I'm not an expert on this library in particular, but I've used it in the past, and I'd like to share some notes on how some decisions may impact performance. NET team, and its ability to provide lazy evaluation means that the cost of performing most manipulations on a set of objects is spread across the larger algorithm requiring the manipulated set. She covers standard queries—such as finding overlaps in two datasets and creating hierarchies—as well as complex chained queries. LINQ to SQL - Refers to a component of. The MaptunerX Bundle delivers instant plug-in horsepower! Quickly and easily load performance tunes into your watercraft, ATV or UTV eliminating the need to ship out your ECU for programming. After taking a brief look at the performance of each of these, we found that, in most cases, using !Any to generate a NOT EXISTS operator results in a performance boost over the other methods. The real difference is understanding what each of these data structures do. The folloing two methods are functional equal but the non-Linq one is twice as fast. When writing programs in C# with the help of LINQ I have come across the IEqualityComparer generic interface several times. NET collection objects, you increase the performance of retrieving the LINQ results from their corresponding queries. All of a sudden we started to see a weird exception in our intranet "System. Aggregate function An aggregate function is a function and is required to group together the values of the multiple rows as the input and returns the output as single value of greater significance. Different Ways to Write LINQ Query with Examples. ArgumentException: An item with the same key has already been added. Linq namespace. Why? Because in my opinion LINQ is much easier to read, understand & lends itself to fewer bugs. To explore this scenario we need a test database. The code structure for Entity SQL uses a reader, similar to using a DataReader with T-SQL. (I'm not a techy so I'm not sure what to call it. An exception is thrown, if a different connection is used. It executes only when we access the query results. LINQPad is not just for LINQ queries, but any C#/F#/VB expression, statement block or program. In LINQ to SQL, a database table is represented by an entity class. Consider the following when installing or upgrading to the latest release, or when evaluating new hardware: Make sure your hardware exceeds the minimum system requirements for the AutoCAD-based product. 4 GHz) and 32 GB DDR4 2133MHz. how are you? I know there are plenty of questions and answers about it, but my case is quite particular because I dont have large arrays to intersect. except with the prior written. LINQ provides access to the Distinct, Union, Intersect and Except set operations on any data source that implements the IEnumerable or IQueryable interfaces. This method provides a declarative, function-oriented syntax for a typically imperative processing task. LINQ to DataSet - Refers to a component that makes it easier and faster to query over data cached in a DataSet object. In this slideshow we discuss 10 different methods to improve SQL query performance. LINQ is INtegrated with C# (or VB), thereby eliminating the impedance mismatch between programming languages and databases, as well as providing a single querying interface for a multitude of data sources. 9 for a single row. We will not share your personal information except as described above. A DataSet is a representation of the tables and from any data source(for example Database or XML file) datasource, exposing a hierarchical object model made of all the objects such as tables, rows, columns, constraints, and relationships. RIVA MaptunerX BRP License (All except SPARK) SKU: RS110SC-TL Purchase one tuning license for each BRP Sea-Doo or Can-Am vehicle that you are flashing with the MaptunerX programmer. ResourceBased collection is superset and EmployeeBasedCollection is subset. So, we can use LINQ for querying against DbSet, which will be converted to an SQL query. Following is the syntax of using PLINQ to increase the performance of LINQ queries in c#, vb. I definitely get all kinds of warnings from Visual Studio about Resharper affecting solution load times and typing. This article gives an explanation about how to get distinct records from Datatable using LINQ with c# and how to remove duplicate rows from Datatable based on specified columns using LINQ as well as also show you how to fetch distinct rows from Datatable using LINQ in C# and get distinct values from the DataTable and also shows how to get distinct value using Group By, select in DataTable. Finally we get to the main point of this blog post, how do the different tools perform, do they achieve their stated goals of optimising LINQ queries and reducing allocations? Let’s start with a very common scenario, using LINQ to filter and map a sequence of numbers, i. So performance-wise, there's no difference whatsoever between the two. 5 that provides a run-time infrastructure to manage relational data as objects. NET framework version 3. Join Olivia Chiu Stone for an in-depth discussion in this video, Take and skip operators, part of LINQ with C# Essential Training. We have learned that the lambda Expression can be assigned to the Func or Action type delegates to process over in-memory collections. Count() are dramatically difference in performance, when simply looking for the size of an array or list, be sure to use the. LINQ query operators: lose that foreach already! 9 May, 2008. I guess it'd be a "fun" item to have if you're just out target shooting. The Select -> SelectMany is redundant and will decrease performance. Entity Framework Tutorial LINQ Prevent SQL Injection Do LINQ is SQL Injection safe? SQL injection is a code injection technique used to attack data-driven applications, and that might destroy your database. LINQ (Language Integrated Query) is a popular querying language available in. LEFT OUTER JOIN (all three were identical except for the number of rows) Performance Results. Gets sum of values from list of integer numbers. IEnumerable. LINQ to SQL https://social. The GroupJoin operator performs the same task as Join operator except that GroupJoin returns a result in group based on specified group key. That means you can use it to speed up intensive searches on in-memory collections—if your web server has multiple CPU cores. As you know, Inner join returns only those records or rows that match or exists in both the tables. EF Core has a new extension method ThenInclude(). If you believe JD Conley's Linq to Sql Surprise Performance Hit article of November 28, 2007, and I have no reason to doubt his results, the answer is 1. The real difference is understanding what each of these data structures do. 6m developers to have your questions answered on Get DISTINCT count of Data Access, formerly OpenAccess ORM LINQ (LINQ specific questions). (except LinQ 20 Gal (73L) Deluxe Modular Bag). The hardware specs: Intel i7-6700 CPU (3. As noted in the LINQ and Entity Framework Posts for 11/26/2007+ post's "JD Conley: Compile Your LINQ to SQL Queries for Performance" topic:. Second, if re-writing the query is required, you must coax LINQ to SQL into generating the SQL syntax you're after. Net allows Dot Net applications to run queries at lightning speed. Gas-cylinder pivot action, locks in the raised position. Rewrite ConcurrentQueue for better performance (except for XmlSerializer) System. Except(fruits2, New ProductComparer()) For Each product In except Console. Linq is part of Microsoft. Linq namespace in C# 3. There was a performance issue in some large transactions. Manipulating Data Using LINQ. LINQ To Objects and the performance of nested "Where" calls The "always true" query is basically linear except for the jump in time taken between a depth of 2. Hope everyone is already exploiting the power of LINQ on a fairly regular basis. Result = 2. (I'm not a techy so I'm not sure what to call it. July 2016;13(7):1425-1430. LINQ to SQL fully supports transactions, views, and stored procedures. TL;DR * The answer is huge, but (hopefully) quite comprehensive. The name conveys the purpose of the interface clearly, still, surprisingly, my first attempts to apply it were marked by strong confusion - the thing merely didn't work the way I wanted it to. PRAGIM is known for placements in major IT companies. ) NOT good if you need to use the light or laser for a self defense situation. So, we can use LINQ for querying against DbSet, which will be converted to an SQL query. PreprocessorLoader. 2015 by Tudor One of the projects I’m working on has a component that has a very simple task: reads a record from a database table and based on it, send a message to Microsoft Windows Service Bus. This SQL Server tutorial explains how to use the EXCEPT operator in SQL Server (Transact-SQL) with syntax and examples. I definitely get all kinds of warnings from Visual Studio about Resharper affecting solution load times and typing. and say for most people using LINQ isn't going to be the main performance bottleneck, or even. To use LINQ queries you need to import System. This idea applies well to readonly. Design", "CA1011:ConsiderPassingBaseTypesAsParameters", Scope = "Member", Target = "System. Alternatively, you could actually write indexes for LINQ by overriding the "join" syntax. By Frank Kalis. 6m developers to have your questions answered on Get DISTINCT count of Data Access, formerly OpenAccess ORM LINQ (LINQ specific questions). So according to this, I can say stored procedures are faster in performance as compared to LINQ. If you continue browsing the site, you agree to the use of cookies on this website. Life goes on. Name & " " & product. For most of the samples, this doesn’t matter semantically (except for a hypothetical tool that does a straight output to output comparison between LINQ-to-Objects and PLINQ runs); for example, the first sample lists all of the numbers from the array { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 } where the numbers are less than 5, and the second sample. That's what you're probably thinking. I have 2 issue one my application is on framework 2. Microsoft basically divides LINQ into three areas and that are give below. Professional ADO. The response was there was no way to guarantee it, except for the end users to keep changing their LINQ until it no longer auto-generated APPLY. There are two set collection of one ResourceBased Collection and other EmployeeBasedCollection. NET Framework. This is the main reason why LINQ is banned from the Roslyn project because of these subtle delegate issues. Sea-Doo accessories for every ride From pure family to performance Find out more Rugged reliability You get far more out of your Can-Am off-road vehicle when you customize it with genuine top-quality Can-Am accessories. NET Little Wonders: The Enumerable. Linq namespace in the. PredicateBuilder is also shipped as part of LINQKit, a productivity kit for LINQ to SQL and Entity Framework. how are you? I know there are plenty of questions and answers about it, but my case is quite particular because I dont have large arrays to intersect. As you know, Inner join returns only those records or rows that match or exists in both the tables. 0 or above, InMemory. Compatibility. This method returns an IEnumerable of. except that i t is interface based, and it can be easily processed from C# code using sophisticated libraries with good performance and easy to use API. Under the hood LINQ will iterate over the collection, just as foreach will. 6 for 92 rows and 2. Repeat() Static Method Once again, in this series of posts I look at the parts of the. Designed to run with Dot Net 4. The GroupJoin operator performs the same task as Join operator except that GroupJoin returns a result in group based on specified group key. So, here the execution of the query is deferred until the query variable is iterated over using for each loop. One of the biggest things that DBAs try to do on a daily basis is to ensure that their database systems run as fast as possible. (Notice that we used ParallelEnumerable to force range partitioning: this improves performance in this case because all numbers will take equally long to process. These two additions were really meant for each other. To use LINQ queries you need to import System. Integer Performance Comparison for C++, C#, Delphi. Net to increase performance of processing data from. Getting All the Results When Joining with LINQ. On the performance page, everything is set to “fix silently” except for source control integration. The second form of this method allows us to filter elements against a function rather than a selector. LINQ Distinct Method LINQ Except Operator In LINQ, ToList operator takes the elements from the given source and it returns a new List. NET Framework. LINQ to Objects, if you will. This tutorial covers the support for LINQ queries as of the 1. It turned out one component was the trouble maker. It executes only when we access the query results. Although they usually can’t help to find the root causes of a problem, performance counters can point us in the right direction. Last but not least, Olivia provides tips for optimizing the performance of your. Count property as it is orders of magnitude faster. And if performance is important, or if change tracking is not required, then LINQ2DB may be the best choice. The idea is you maintain data in one of these collections, then use the extensive Linq API to dynamicaly query the data in a similar manner as Linq-to-Objects. LINQ provides access to the Distinct, Union, Intersect and Except set operations on any data source that implements the IEnumerable or IQueryable interfaces. For all wondering what are the things a C# developer should and should not do. Linq namespace. TL;DR * The answer is huge, but (hopefully) quite comprehensive. April 5, 2010. x as well as in Entity Framework Core. XML Linq; Logging; Reactive Extensions (Rx) Using LINQ to Find Top 5 Processes that are Consuming Memory; NuGet – upgrade from package. Learn how to use the LINQ Set Operations in C# (distinct, union, intersect and except). Perhaps the most important new feature to the next version of Visual Studio, for now code-named 'Orcas,' is the release of LINQ, which stands for Language INtegrated Queries. CodeAnalysis. Improving LINQ Except and Intersect by using a lambda expression for custom comparison August 14, 2009 Akshay Luther 2 Comments I was recently doing some work where I had to use Except and Insersect, but with some custom comparison logic. PRAGIM is known for placements in major IT companies. Except subtracts elements from a collection. RIVA MaptunerX BRP License (All except SPARK) SKU: RS110SC-TL Purchase one tuning license for each BRP Sea-Doo or Can-Am vehicle that you are flashing with the MaptunerX programmer. The DbSet class is derived from IQuerayable. 0: Comparing LINQ and PLINQ performance January 31, 2010 March 15, 2017 Gunnar Peipman 268 Views 4 Comments In one of my sessions I demonstrated how PLINQ uses two CPU-s instead of one and has better performance than non-parallel processing. As a relatively new user of. The hardware specs: Intel i7-6700 CPU (3. Why? Because in my opinion LINQ is much easier to read, understand & lends itself to fewer bugs. LINQ-ish Cmdlets for PowerShell. The disadvantage with LINQ is, it is not a precompiled statement where as stored procedures are precompiled. 0 and newer and defines a set of proprietary. This reference again itemizes every LINQ operator (and in the same order as the original article) and gives some emphasis to potential performance gains from using LINQ where possible when doing operations on large data sets. Events Blog Performance Adventure Hard Work Manifesto Technologies Visions of Victory Track Systems Hunting How to (except Mossy Oak Break-Up LinQ™ 32 Gal. If you're using Entity Framework, you'll need the complete LINQKit - for the AsExpandable functionality. and the performance The LINQ to Entities set-related methods provide full support for all of the standard LINQ overrides, except. While the U. For example, the home page shows a list of all articles from all categories. 1 June 2009. " being thrown by a custom web part that shows results that are indexed by SharePoint 2010 Search. » BRP Ski-Doo Canada Sort » Popular Items Price Low to High Price High to Low >> | SHOW 25 SHOW 50 SHOW 100 PRODUCTS / PAGE. LINQ to SQL is a built-in O/RM (object relational mapping) framework that ships in the. This is the LINQ extension method that subtracts elements from a collection. The EXCEPT ALL operator does not remove duplicates. This idea applies well to readonly. PreprocessorLoader. Linq to DataSet: Provides the ability to query ADO. Count property as it is orders of magnitude faster. Entity SQL has the ability to cache its queries, and does this by default. NET collection objects, you increase the performance of retrieving the LINQ results from their corresponding queries. So, if performance is not significant then EF Core can be chose. Count() are dramatically difference in performance, when simply looking for the size of an array or list, be sure to use the. For example, the home page shows a list of all articles from all categories. Code) Next ' This code produces the following output: ' ' orange 4 ' lemon 12 Remarks. 3 for a single row. SelectMany(row => row. Except (prior) select o. As you know, Inner join returns only those records or rows that match or exists in both the tables. Linq; Then, get a reference to a collection variable in the usual way:. PRAGIM is known for placements in major IT companies. GitHub Gist: instantly share code, notes, and snippets. Code examples are C# and VB Windows form or Web site/application projects not, except in the first chapter, simple command-line projects. They just released a LINQ provider that supports basic query scenarios, but they plan to switch to a new one that uses their new HQL AST model. LINQ - usage of Except method in Linq In this post let we see the difference between the collections , using Linq. Linq-to-Entities Query. *FREE* shipping on qualifying offers. As with LINQ to SQL, the results list was projected directly from the query. Linq to DataSet: Provides the ability to query ADO. 6 Simple Performance Tips for SQL SELECT Statements Performance tuning SELECT statements can be a time consuming task which in my opinion follows Pareto principle's. RIVA MaptunerX BRP License (All except SPARK) SKU: RS110SC-TL Purchase one tuning license for each BRP Sea-Doo or Can-Am vehicle that you are flashing with the MaptunerX programmer. The performance counters monitored the entire system, which was in an idle state (except for the current process), which captured the file read and write external to the test process. Performance Gain In LINQ Query Vs LINQ Stored Procedure? Aug 6, 2009. NET Entity Framework, OData and WCF Data Services, SQL Server 2008+, and Visual Studio. The "always true" query is basically linear except for the jump in time taken between a depth of 2. { "api/Microsoft. The chart that shows UK workers have had the worst wage performance in the OECD except Greece. The MaptunerX Bundle delivers instant plug-in horsepower! Quickly and easily load performance tunes into your watercraft, ATV or UTV eliminating the need to ship out your ECU for programming. Put an end to those hundreds of Visual Studio Console projects cluttering your source folder and join the revolution of LINQPad scripters and incremental developers. In this slideshow we discuss 10 different methods to improve SQL query performance. The text, ntext, and image data types cannot be compared or sorted, except when using IS NULL or LIKE operator. NET Entity Framework, OData and WCF Data Services, SQL Server 2008+, and Visual Studio. In this article, I am going to discuss the Different Ways to write LINQ Query with examples. The data will be anonymised before being transmitted. Sort, the performance is almost the same. The exact property name will be searched for first and if no matching property is found then the StringComparison will be used to match a property. NET, and pushing out the old and tired stock. IEnumerable. Sometimes Visual Studio shows multiple messages suggesting I should disable Resharper. We can immediately see how useful the index is when we look at these new results. LINQ to Entity is a great ORM for querying and managing database. Entity Framework Core. and say for most people using LINQ isn't going to be the main performance bottleneck, or even. NET provider for EF. Learn to use Union, Intersect, and Except Clauses. 5 is out with all its LINQ query operator goodness, I feel like going on a mean streak of trashing a lot of o. PowerShell is an interpreted scripting language, and so is slow at using an iterative loop of any great size. It turned out one component was the trouble maker. The code structure for Entity SQL uses a reader, similar to using a DataReader with T-SQL. So that means the input. android,performance,sqlite,compare. From Hello World code samples and the new C# 3. Laugh out loud with standup sets from household names and up-and-coming talent inside Jimmy Kimmel's Comedy Club at The LINQ Promenade. The "always true" query is basically linear except for the jump in time taken between a depth of 2. There is a lot of files with the same modification date under. 4 GHz) and 32 GB DDR4 2133MHz. The data will be anonymised before being transmitted. PRAGIM is known for placements in major IT companies. This could cause problems like Primary key violations, depending on your table design. What is hash code? A hash code is a numeric value that is used to insert and identify an object in a hash-based collection such as the Dictionary class, the Hashtable class, or a type derived from the DictionaryBase class. NET C#, Linq, performance, Sets Marc I've been poking about with the System. A CQLinq query is a LINQ query that relies on types. LINQ Group By With Multiple Aggregates. Find the best prices on Jimmy Kimmel's Comedy Club tickets and get detailed customer reviews, videos, photos, showtimes and more at Vegas. This tutorial covers the support for LINQ queries as of the 1. Note that if there are multiple columns, say ID and Name, the column should be explicitly stated in Oracle queries: Select ID from test_a minus select ID from test_b. select * from test_a except select * from test_b; In Oracle, the minus keyword is used instead. Another happy arrival is my first grandson: He was preceded by his big sister almost two years ago. Can query any collection implementing IEnumerable Equivalent to Iterable[T] in Scala. LINQ Deferred Execution: In this case, the LINQ Query is not executed at the point of its declaration. LINQ to SQL changes in. Let's see both the features and take advantage of both the features to boost your LINQ Query performance. There is no way to get around this, except by calling SubmitChanges() after the different Operations. Join a community of over 2. Otherwise, it's even EF 6 might be more preferable because it supports raw SQL execution which will help in heavy queries. Gas-cylinder pivot action, locks in the raised position. Dim except = fruits1. If you believe JD Conley's Linq to Sql Surprise Performance Hit article of November 28, 2007, and I have no reason to doubt his results, the answer is 1. CSharp Driver LINQ Tutorial so there is no performance advantage or penalty to choosing either style. The LINQ (Language INtegrated Query) family of technologies is designed to provide a unified approach to accessing data from disparate data sources. LINQ Group By With Multiple Aggregates. Easy to use library to use CSV and tab delimited files with LINQ queries. Otherwise, it's even EF 6 might be more preferable because it supports raw SQL execution which will help in heavy queries. This idea applies well to readonly. In your case needs value the situation!! When I have this problems the first questions are The tables that I want to do 'drop table' have few data? If it's yes the best way is the 'drop table' command. LINQ Tutorial Introduction. However, in some cases you might want to return custom classes that do not exist in your class model. So, a Delete and Insert in your LINQ would execute as an Insert and a Delete on SQL Server. LINQ-ish Cmdlets for PowerShell. Its simple: if I m executing a sql query directly its a one way process whereas if I m using linq, first its been converted to sql query and then its executed. You can then query the database using LINQ, as well as update/insert/delete data from it. LINQ to SQL https://social. Performance wise take a look at this blog post.