Get sql query from linq

Get sql query from linq. Mar 6, 2024 · Query variable. UpdateDateTime). See full list on learn. GroupBy(x => x. Companies. var query = db. First () can help. Summer-time is here and so is the time to skill-up! Mar 31, 2015 · LINQ is a query tool (Q = Query) - so there is no magic LINQ way to update just the single row, except through the (object-oriented) data-context (in the case of LINQ-to-SQL). Add a "New item" and select Data -> LINQ to SQL Classes -> Name it Sample. Kin. Don’t get too carried away verifying strings within the query though as it may change. StartDate > DateTime. Name, columnInfo = c} Mar 7, 2014 · I have a set of objects with two properties, A and B. Some sample code will make it clearer -. If required you can save them on a file system etc. flavor == "Classic Coke" && c. Expression property. The following examples demonstrate some simple LINQ queries by using each approach listed previously. I think most C# developers would agree that LINQ is an integral part of the experience of writing code with the language. WhereIf(SearchControlMain. Depending on the LINQ provider, this may also be inbuilt, for example with LINQ-to-SQL you can assign anything to . NET applications to query SQL Server databases? Aug 28, 2013 · I need to get a list of the items in the first list where Email does not exist in the second list. The issue here is that an automatic translation from SQL to LINQ will often have to perform more transliteration than translation - generating examples of how NOT to write LINQ queries. Id == id); Using EntityFrame 6 it is possible to just to a ToString() on your query at least when using MySQL. ForEach(s => Console . answered Feb 4, 2011 at 16:16. The important thing to note is partName. CurrentTimestamp. Let us see the example. where list. SQL queries can return regular entity types or keyless entity types that are part of your model. I doubt that you want one sequence with a mix of Customers and Transactions. StartedAt descending select x Sep 15, 2021 · LINQ to SQL is a component of . First () if you are expecting that there should always be one or more records so that you will get an exception if it doesn't happen. Mapping. Contains( searchString)); You want to maintain good control over what gets sent to the database. The following example shows how to use the Regex class to create a regular expression for more complex matching in text strings. TextBoxLastName. You can experiment with the query expressions and see the differences in the results. Aug 20, 2018 · 0. <Standard Query Operators> <lambda expression>. You need to specify the type to map to from the query results. Contains(codeData. FROM BP INNER JOIN. I want to find the fastest way to get the min and max of a column in a table with a single Linq to SQL roundtrip. Logging the executing query using your logger of choice or the built-in Logger in . // TODO: now execute some queries against dataContext. With SQL I would just use "not in", but I do not know the equivalent in LINQ. ToString() method in LINQ to Entities to get the exact SQL query, already formatted. Select (c => DateTime. Profiling is a sure way. Lukasz. It is cockamamie! Oct 1, 2008 · I am looking for a way in LINQ to match the follow SQL Query. LINQ to SQL: Allows querying of SQL Server databases, translating LINQ queries into . Where(w => w. Dec 28, 2011 · How can I convert the following SQL queries into LINQ query form in C#, . Another option you could try is creating a stored procedure in SQL and call it from your application. The LINQ to SQL provider translates the ADO results to an IQueryable collection of user objects. It is a bit unclear what you want. Sep 2, 2009 · It's possible to write LINQ to SQL that gets all rows that have either null or an empty string in a given field, but it's not possible to use string. clauses). eg. Person. Last() works because you have loaded the entities into memory (with . Oct 3, 2009 at 1:13. Sep 14, 2021 · The IEnumerable source has generally originated from a LINQ to DataSet expression or method query. Add custom methods for LINQ queries. ProductId, p. Here is the SQL query. Contains(qs) is different than query. Select max(uid) as uid, Serial_Number from Table Group BY Serial_Number Really looking for some help on this one. CategoryID); LINQ WhereIf Extension Method LINQ to SQL Where Clause Optional Criteria Aug 14, 2008 · Both interfaces require some sort type-safety validation. edited May 23, 2017 at 12:17. CommandText. BPId RIGHT OUTER JOIN. Min(o => o. Sep 23, 2008 · Convert your linq to query style using lambda expressions and insert a Select statement that returns itself somewhere after the point in the linq that you want to debug. Nov 18, 2008 · For one, LINQ emits shaped results and SQL flat result sets. Take(10); May 21, 2019 · LINQ supports filtering, sorting, ordering, grouping. Now in linq to entities (not linq to sql) it is translated to GetDate: context. Pro: it is the exact query that will be launched; Con: the query is less readable due to the use of several aliases or combinations of nested SELECTs; Option 2. Max(o => o. where Department = 'ABC' and Skill_Name is not null. It is defined within the C# or VB code. Contains(qs)); return q; This will work as long as partName is a string (or an SQL equivalent of a string). The variables in a query expression are all strongly typed. Jun 23, 2015 · Use IQueryable. Key). Dec 15, 2023 · Query expressions query and transform data from any LINQ-enabled data source. You can query for information, and insert, update, and delete information from tables. Identifier into a. select. select x; var total = q. Linq. What I currently do: public async Task<List<TModel>> Get(Expression<Func<TModel, bool>> query) {. 01")) The following query returns Enumerable of anonymous object that has only StudentName property: Example: LINQ Query returns Collection of Anonymous Objects var teenStudentsName = from s in studentList where s. ProductName, p. StartedAt || (x. Sep 4, 2014 · You can print the generated SQL by putting one line of code just before data gets loaded. I'd like to get the Min of A and the Max of B. StudentName }; teenStudentsName. container == "Can" select c. How can we use LINQ to SQL in . where new[] { "Admin", "User", "Limited" }. Feb 6, 2013 · Also, could you give an example of what the SQL would look like if the number of keywords was 5? I don't really understand why the KeywordAdCategories table is used twice There might be a better way to write this SQL, which would lead to a better LINQ example. That's the tradeoff. Let me show an example: var persons = new List<Person>() {. Field<string>("Project"). Tables[0]. var minA = objects. What it does isn't what it looks like either - there's no way you can use GROUP BY and get any non-group column back without aggregation. Out; // for a LINQ-to-SQL DataContext. Get the query expression using IQueryable. A); var maxB = objects. Most methods and operators on . However, if I changed the userCode with a string like below, I will get the value I want. // this. StoppedAt <= x. The following description assumes a basic familiarity with LINQ. Meeting. NET 3. EDIT- If you need both the first and second, then the above will be more efficient than runing your query twice: . The accepted answer will generate more efficient statements. If you use. – Michael La Voie. CodeId)); Sep 15, 2021 · The LINQ to SQL provider then transforms the query into SQL text and delegates execution to the ADO provider. Text. Customers. ReqDate == DateTime. FirstOrDefault(). In a recent tip on Language INtegrated Query (LINQ), you have described how it can be used as a query language extension to both VB. dbml. Corporates. Getting the actual number returned would use Count (), but wouldn't result in another query if the original query was materialized. NET and C#. SIId) AS Expr1. Then use your dynamic queries with IQueryable<T>. Trim())); I strongly recommend extracting the string from the textbox before authoring the query. First(). (from c in db. Sum (p => p. You can then set a breakpoint on the return statement, and when the debugger stops at the breakpoint, you can inspect the query local variable to see what's in it, interactively. We call the SQL like style Query Syntax style and the more method driven style Selector style. . It provides easy transformation means you can easily convert one data type into another data type like transforming SQL data into XML data. ProductId. ContactName); LINQ to SQL supports all the key capabilities you would expect as a SQL developer. Note that the best answer is selects all the lessons without a projectID and those with the matching projectID that matches the statusID's. This Linq query is the same as the following SQL: SELECT Items. Now, we have data in both the tables. 2) select distinct location, country from Customer where Customer_Code ='1001'; c#. User. Jul 1, 2021 · This construct includes the 'or' part of the expression in the generated SQL query. Property) Or in your case: var foo = from codeData in channel. StudentName)); Aug 24, 2023 · Entity Framework Core allows you to drop down to SQL queries when working with a relational database. from cust in db. Sep 10, 2010 · query = query. Jan 24, 2012 · Closed last year. When I ran the code, I got the default value of 0 assigned to userId meaning the Id was not found. })); Now if someone fills in the search box, i want to extend the query by adding another Where statement to the query: var query = Search(context, 123); query = query. LINQ to SQL itself translates all the necessary operations into the necessary SQL operations that you are familiar with. * FROM TagMaps INNER JOIN Items ON Item. You cannot do the same with the first query because of the nested queries. The LINQ query makes it easy to filter on exactly the files that you want to search with the regular expression, and to shape the results. In this scenario put following line of code anywhere but before the foreach statement. You've grouped them by your identifier so you should only get the newest record for each identifier. Sorted by: 176. like this: using (var db = new MyContext()) {. OrderByDescending(g => g. Connection property: May 30, 2016 · There are 3 approaches for logging SQL statements from IQueryable<>: Using Built-in or Custom Logging. LINQ provides a fluent, intuitive, and consistent way to query data sets. Min(row => row. AsQueryable<CodeData May 7, 2016 · I do not want to do any processing on my foreach loop, I want the value in my linq query itself. || employee. I started this article comparing Linq to SQL and that works if you got a background working with databases. CategoryID == SearchControlMain. linq query will return a collection, you have to use First() or FirstOrDefault() to get the item : string queryResult = query. WriteLine(s. Context is of type DbContext. FavoriteNumber); int max = MyTable. ToString() to get the sql statement, but the sql statement contains many linq parameter like @p__linq__0, @p__linq__1, @p__linq__2 and so on. Customers let totalSpend = c. com Sep 15, 2021 · Example. NET) without using quotes. Feb 26, 2023 · Test step 1: Execute the SQL query: First, execute the SQL query in your database management tool, such as SQL Server Management Studio or MySQL Workbench. AsQueryable<CodeData>() . Sep 28, 2017 · Yes! It's possible we can do this using the SqlQuery extension method. Apr 7, 2020 · That's a bad LINQ query - LINQ isn't a replacement for SQL and the JOINs are generated by EF or L2S based on the context relations. Where (i=> i. ToList(); Here ReqDate is a DateTime field. Also don't create anonymous type for subquery result: imageName = (from soh in db. Using the same example, this might bring in all of the related order headers, but none of the other records: var customersWithOrderDetail = context. using System LINQ Supported Data Sources: LINQ can be used with several data sources, and there are different flavors of LINQ based on what you are querying: LINQ to Objects: Refers to using LINQ queries with any IEnumerable or IEnumerable<T> collection directly in memory. Collections. Select(item, index) method overload. LastName }; In this example, we use LINQ’s from, where, and select clauses to mimic the SQL query structure. So I know this would work in two roundtrips: int min = MyTable. Jun 8, 2011 · Sure, there are 2 things you will need. Mar 26, 2013 · If user want to see june month records then he pass 06 as input parameter how to write linq to sql query to get june month records as output. Jul 23, 2019 · ToListAsync is available from System. Type object instead of statically specifying it as a generic type parameter: var results = db. Then select out the key properties along with the count of each from the grouping. where u. IsNullOrEmpty to do it, even though many other string methods map to LINQ to SQL. SI ON BP. StartDate == null. age > 12 && s. Contains("070932. A really nice tool to view the queries as they are happening is the Linq-to-sql profiler 21. Where(codeData => codeIDs. Now, drag and drop the tables. ToString(); As Greg in the comments notes, this gives you the parameterized query, so you will need to add in the values you want to use. Jan 22, 2019 · At first you should download a code to use Dynamic queries by this link. Skip(1). Use GroupBy with a key that contains your grouping properties. Apr 25, 2024 · In this tutorial, you create a data source and write several LINQ queries. DistinctBy(x => x. SELECT ST. This walkthrough demonstrates the C# language features that are used to write LINQ query expressions. Let's show an example Jul 4, 2017 · 3. – Easy conversion - Create & register your account - Select your conversion: SQL ⇢ LINQ or LINQ ⇢ SQL - Paste in your SQL/LINQ/dataset & desired query and press the conversion button - We will analyse your input into AI and generate an optimized result - Copy & paste the result in your solution - Get a subscription or buy credit bundles to keep productive Feb 27, 2024 · APPLIES TO: NoSQL. MoveNext () method. But in this case, every Dealer also has Market as a navigation property, you can query to Dealer including Market first and then grouping by Market after. RowType. NET DataReader you could use the DataContext. First()); edited Nov 25, 2016 at 14:31. The second parameter represents that you can include parameter placeholders in the SQL query string and then Nov 19, 2012 · use SingleOrDefault() if your query always returns only one element as result or exception will be thrown if the result of your query is more than one element. To give an example: I have the following code which I need to convert to using Dapper. Id && isCurrent orderby x. Sep 13, 2017 · When I debug the code I always use query. where. Id == user. Description, ST. tblProductImages. ProductPrice. string searchString = TextBoxLastName. Jul 4, 2019 · Insert into Employees values ('Valarie', 'Vikings', 'Female', 35000, 3) GO. var NewGroupEmployees = dbContext. MinA = x, results. Where(r => r. You want to use Take (N); var data = (from p in people. HasValue, q => q. GetTables() where t. Apr 25, 2024 · In this article, you see examples of extending LINQ by writing your own methods that follow the same pattern. ToTraceQuery inlines all of the parameters, whereas ToTraceString tacks them on the end (as it a more true representation of what is under the hood). Jan 3, 2022 · In MoreLINQ we have the DistinctBy operator which you could use: var distinct = list. Topics let isCurrent = (x. First(); Use the OrderByDescending to order them and take the top one with First (). NET Framework built-in types have direct Once you get the Command you can print the CommandText and then loop through the Parameters collection and print all the individual parameters. CodeId) select codeData; But you might as well do that in dot notation: var foo = channel. Essentially, they are the same and could be used interchangeably depending on your preference: Query Syntax: var selected = from u in users. Oct 29, 2010 · 30. Note that operator precendence with the && and || will not give you the results you are expecting. In LINQ, a query variable is any variable that stores a query instead of the results of a query. FirstOrDefault() != null ? query. BPId = SI. FirstOrDefault () and check for null and handle appropriately. Where(employee => employee. For Linq to work you need to map your results against type-safe objects and query against that instead. I want to select Date part from a DateTime value using Linq to Sql or sql lambda. You can use a System. The best I've found so far (which doesn't work) is: var foo = from codeData in channel. But there is a different way to create queries namely by using method names. ItemId WHERE TagMaps. You can follow along and build the app and experiment with the queries yourself. Apr 25, 2024 · How to combine LINQ queries with regular expressions. Mar 14, 2024 · LINQ Equivalent. Query syntax is similar to SQL (Structured Query Language) for the database. dbContext. Also there is the linq-to-sql debug visualizer which does the same in debug mode. Jun 27, 2016 · Is there any way in which I can get the SQL statement that is being generated from the query? Topic currentTopic = (from x in Repository. Log and it will write the queries as it does them. typeID, (key, group) => group. 5 that provides a run-time infrastructure for managing relational data as objects. Sep 10, 2011 · 41. Customers select c); string sql = cust. <select or groupBy operator> <result formation>. Since Market. GroupBy(p => new {. Code == userCode // userCode = "LRAZAK". DataTables are not strongly typed. AsQueryable<CodeData>() where codeIDs. This will give you a result set that you can use for comparison. sqlQuery; better is to check for null as well: string queryResult = query. Max(row => row. First(); The first First() gets the first group (the set of rows with the largest status); the second First() gets the first row in that group. User_Rights) select u. CategoryID. You can use that to intercept all the SQL sent to the DB. However, this doesn't mean you have to completely give up on this LINQ query style. City == "London" select cust; foreach (var z in q) Console. Employees. You extend the set of methods that you use for LINQ queries by adding extension methods to the IEnumerable<T> interface. TagId IN (12,32,24) Linq takes care of the INNER JOIN part for you, because it knows how to go from TagMap to Item. Because a query variable doesn't store the results of the query, you can modify it or use it as the basis for a new query at any time, even after you execute it. Nov 26, 2022 · LINQ query syntax is consist of a set of query keywords defined into the . This is often done in LINQ to SQL queries: var query = from c in db. answered May 5, 2009 at 12:31. SingleOrDefault(); Jun 7, 2018 · You can get the best of both worlds by mixing query and method syntax. LastName. Single(x=>x. Then use DynamicQueryable class from the project Dynamic Query. A custom implementation of DbConnection, DbCommand and DbDataReader. Age > 25 select new { user. The ADO provider returns query results as a DataReader. Where(p => p. Ordinal select new {columnName = c. ToList(); This is more correct than the best answer. Now); translates: The problem is that EntityFramework cannot generate the SQL for your query. Count(); var cs = q. Relational data appears as a collection of two-dimensional tables ( relations or flat files ), where common columns relate tables to each other. LocationName, Kin = s. GroupBy(r => r. Aug 26, 2017 · Note that these property/method only apply to a query, not the result - often there is no interim query variable as they're run immediately, so it is easiest to split a query that is formed and run into two steps to debug it: //before. Dec 8, 2020 · I'm trying to get the list of records from a crm entity using c#. age < 20 select new { StudentName = s. Selecting. var query = dataset. Here is the query: private static List&lt;plus_visit&gt; GetVisits( Mar 12, 2024 · The LINQ Join Operator: A Complete Tutorial. Take(1) edited May 5, 2009 at 12:38. Status). LINQ Query Syntax: from <range variable> in <IEnumerable<T> or IQueryable<T> Collection>. With Entity Framework there is a possibility to use SqlFunctions. Note. GetCommand(query). May 18, 2011 · Your linq statement looks fine. Out; Or you could use something like Linq2SQL Profiler which is a rather excellent tool and in fact the right tool for the job: Linq to SQL Profiler - Real-time visual debugger for Linq to SQL. Now). AsEnumerable()) and are now using LINQ to Objects instead of LINQ to Entities. Trying to get the records with IDs present in another list. In the following example, the console window displays the output from the query, followed by the SQL commands that are generated, the type of commands, and the type of connection. 5 code: 1) select COUNT(distinct Skill_Name) from Table1. ID = 1); //query will be an IQueryable object var sql = query. Description, totalSpend, c. Aug 29, 2015 · 6 Answers. Contains(searchString)); So my question is, is it returning all the results where LocationID == 123, then checking the Jan 22, 2024 · For a small number number of bucketlists items, I would rather have a couple of queries that perform index seeks than a constructed condition (expression tree) that includes OR conditions where the generated query is not sargable and therefore requires a table scan. Users where user. Id; var userId = query. At the simplest level: dataContext. net. Skip(100); answered Apr 24, 2009 at 19:49. It’s important to note that LINQ encourages a more fluent and expressive syntax. Use. BPId INNER JOIN. B); Using LINQ query syntax, is there a way to do this so it only passes over the set once? Desired outcome would be an anonymous type (eg, results. At compile time, query syntax is converted to method calls to a LINQ provider's implementation of the standard query methods. , It can add a TOP 1 to the sql command) Share Improve this answer Mar 16, 2015 · 2. You could have a look at the Linq-to-SQL Debug Visualizer, or just hover your mouse over your Linq-to-SQL query (tooltip should show generated SQL), or access: context. sqlQuery : string. Contains(u. StartedAt >= currentTopicsStartedAtOrAfter)) where x. Price) // Method syntax here where totalSpend > 1000 from p in c. PurchaseOrders. It makes easy debugging because it is integrated with C# language. To update data, you need to fetch it out, update the record, and submit the changes: using(var ctx = new FooContext()) {. Take(2) you will get the first and second. var query = from alert in m_alerts. This allows the programmer or developers to write the commands similar to SQL style in the code(C# or VB. The above query gets the max uid of each Serial Number because of the Group By Syntax. Address. Name == "John"). var result = from user in dbContext. And(c => c. Using a Profiler. . STId, COUNT(SI. May 16, 2011 · 2. where soh. var query = tsgdbcontext. Products. IEnumerable<T> collections. Where(x => x. select a. This is the same reason why people can't query against an ArrayList, for example. MbrBP ON BP. To aid in debugging, I find it helpful to assign the linq query to a local variable, then return the local variable. Here is my scenario. Sep 22, 2011 · Location = s. ToList(); Feb 24, 2011 · select l). With partName. g. For more information, see LINQ to SQL. Mar 3, 2016 · Further to Portman's answer, if you're a console application it's as simple as: myDataContext. var q = from x in base. ItemId = TagMap. where cust. asp. Skip(10). Instead of Take(1) which returns sequence IEnumerable<string>, use FirstOrDefault() which returns single string value (or null if there is no results). select u. var query = from u in db. ExecuteQuery(typeof(Customer), "sql query "); If you just want a plain ADO. Generic. Bars. Nov 3, 2009 · Use . Jul 24, 2015 · So are a pair of extension methods that allow you to turn an IQueryable into its SQL query. var cust = (from c in context. group alert by alert. ToString(); This is only in EF4. It can't be executed in Sql Server Management studio directly, I need to replace the @p__linq__0 with the actual parameter value. Contains(item. In this post, we’ll help in your LINQ-mastering quest by covering the LINQ join operator. If you are expecting the possibility of no records, use . Dec 17, 2018 · You wrote: I wanted to grab the 10 latest transactions and 10 latest customers in one LINQ query. ToList(); This should return a list with the desired result. If the status is always unqiue, you can replace the second First Mar 19, 2015 · 1. FirstOrDefault(); // userId = 0 :(. ToList(); Query Syntax. Empty; Apr 24, 2009 · 58. I have the following SQL query and I need to have it in LINQ, I tried several things but I can not get it working. Besides that, even when you use DateTime. NET Framework version 3. Jun 24, 2015 · Since the LINQ statement has not been executed before that, it is able to affect the SQL generated (e. What this really does is join some tables and return all rows and columns. ToList(). marc_s marc_s. Apr 5, 2013 · 60. FirstName, user. Test step 2: Capture the SQL query: Next, capture the SQL query generated by LINQ. partName. The schema of the cloned DataTable is built from the columns of the first enumerated DataRow object in the source table and the name of the cloned table is the name of the source table with the word "query" appended to it. You basically set it up so you have a layer that logs all the SQL that is run. I want to select all the purchase orders for today. AsEnumerable() . Selecting ( projection) is achieved by just writing a LINQ query in your own programming language, and then executing that query to retrieve the results. Take(100); If you want to skip some records as well you can use Skip, it will skip the first N number: var data = (from p in people. Depending on the data provider's optimizations, of course. For this reason, there are few (if any) tools that will be able to reliably convert SQL to LINQ. EntityDataContext. To use LINQ to SQL effectively, you must have some familiarity Aug 29, 2015 · So if I were creating the sql for this myself, I would simply do something like the following (where the in clause contains all the values in the codeIds argument): In Linq to Sql I can't seem to find the equivalent of the "IN" clause. co2Target). The algorithm for matching columns in the result of the query to fields and properties in the object works as follows: If a field or property is mapped to a particular column name, that column name is expected in the resultset. typeID); This only works for LINQ to Objects though. Notice that it is automatically going to create the entities for those two tables. Include("Orders"). Feb 2, 2012 · You can group by status and select a row from the largest group: table. State }; Mar 3, 2010 · q = q. More specifically, a query variable is always an enumerable type that produces a sequence of elements when iterated over in a foreach statement or a direct call to its IEnumerator. LINQ-to-SQL may have better optimization, but LINQ-to-Entities doesn't. Today). TableName == "[table_name]" from c in t. Aug 15, 2016 · The queries I use are in the form of predicates like so Expression<Func<TModel, bool>>. 1 on (previously calling ToTraceString on the ObjectQuery was the way to achieve this). Applications control the standard query operators that are in scope by specifying the appropriate namespace with a using directive This method is a pass-through mechanism for cases where LINQ to SQL does not provide for a particular scenario. Now, create an empty web application. 3. public virtual DbSqlQuery<TEntity> SqlQuery (string sql, params object [] parameters); The first parameter is the SQL query. For example, in addition to the standard average or maximum operations, you Jan 5, 2010 · To get the total number of records before skip/take you have to run a separate query. productInfo where c. MaxB = y) Jul 6, 2011 · To do that . Users. Your second query's use of . You can use a grouping or a lookup, it's just somewhat annoying and inefficient: var distinct = list. You just have to get out of the LINQ query expression and use a . Contains(partName). Take(1) . NET Core as mentioned in this tutorial. 5 or Higher. DataMembers orderby c. Async that can be referenced from your domain layer Domain layer extensions public static IAsyncEnumerable<T> AsAsyncQueryable<T>(this IQueryable<T> queryable) { return (IAsyncEnumerable<T>)queryable; } Oct 5, 2011 · LINQ to SQL contexts have a Mapping property that you can use for this sort of thing. WriteLine("\t {0}",z. return db. As a performance measure, Include() allows you to indicate which related entities should be read from the database as part of the same query. Apr 25, 2024 · The compiler does this composition when you write queries using query syntax. Using an SQL Profiler like MiniProfiler to monitor the executing query. select p). Oct 17, 2013 · It's a pretty elegant solution. new Person(){Id = 1, FirstName = "1"}, new Person(){Id = 2, FirstName = "2"}, new Person(){Id = 3 You cannot get an index using pure LINQ query expressions (those with from. Trim(); predicateAnd = predicateAnd. microsoft. SqlQuery Syntax. BPId = MbrBP. For example, a single query can retrieve data from an SQL database and produce an XML stream as output. 5. Dealers property is just a navigation, you need to load dealers separately. Query expressions use many familiar C# language constructs, which make them easy to read. Name. product_id == e. Apr 25, 2024 · Query expressions use a declarative syntax similar to SQL or XQuery to query over System. Manager. Purchases select new { p. Purchases. Log = Console. You will get the generated SQL query in console as follows: You can set or get log of the DataContext in a TextWriter. A query like the one you provided might look something like this: from t in context. var q =. SQL queries are useful if the query you want can't be expressed using LINQ, or if a LINQ query causes EF to generate inefficient SQL. var obj = ctx. If you want to get the NoSQL query that is translated from LINQ, use the ToString() method on the generated IQueryable object. Lots of solutions to this, but simplest in code is just call ToString() on the IQueryable of the LINQ statement. FavoriteNumber); # There are two versions to create queries. The Azure Cosmos DB query provider performs a best effort mapping from a LINQ query into an Azure Cosmos DB for NoSQL query. Contains(qs), partName is searched for any occurrence of qs. Dec 30, 2015 · There are two ways of doing this using LINQ, one uses query syntax and the other uses method syntax. p. ri ka my iw ox oc ve wb xl oq