Ef core stored procedure return value. Unable to get boolean value from oracle stored procedure.

Ef core stored procedure return value NpgsqlParameter("@host_id", hostId); var sId = new My stored procedure should be like the following: CREATE PROCEDURE [dbo]. SqlQueryRaw<ClaimDataView>(); without registering the ClaimDataView in the model. ToListAsync(); then it works. I would like to retrieve those values in my Asp. Example to Understand Calling Stored I'm attempting to call a stored proc through EF and retrieve a return value from the stored proc. net This is the structure of the data returned from that stored procedure: . The DbContext has no native support for materialising multiple resultsets. Customers( [FirstName], [LastName], [Address] ) VALUES (@FirstName, @LastName,@Address and it will return the number of In this post I will show how you can call stored procedures with OUTPUT parameters from EF Core. SqlQuery<Registration("SP_RandomNo_Reg"). FromSql("GetAllEmployees"). ToList(); where MyModelClass represents the result set When I call the stored procedure in SQL Server Management Studio it returns a single row table populated with the correct values, I just cannot seem to get my ASP. dll but was not handled in user code : Executing a stored Entity Framework will automatically return a scalar value if your stored procedure doesn't have a primary key in your result set. How can I get all rows from EF Core or standard SqlCommand? I'm using EF Core which I believe is also known as EF 7? Anyways, I have a stored procedure that returns custom results that will not identify with any specific table. cs file: I just added a couple fields to my stored procedure, which connects to my MVC app using EF, but the new fields are returning null values, even though the model has been updated and seems fine. [Departments]([Name]) VALUES (@Name) DECLARE @DeptId int SELECT @DeptId = [DeptId] FROM [dbo]. 0 Is there a way for read the JSON result like the following pseudo-code? Return stored procedure value for EF Core Database. So: EF Core - stored procedure + view. public static List<USP_Get_TilesetInformation> USP_Get_TilesetInformation() { return new I have a SP that returns a bit. test_GETALL {0}", user. For . faust21 opened this issue Feb 9, 2018 · 8 Which version of EF Core are you using? This has been fixed in 2. The FromSql methods will have to add an output parameter as well. I have tried with ADO. how to get bool value from c# stored procedure. I want to call this stored procedure with Entity Framework Core (7. That's a good bare-bones pattern for those of us who have given up hope that EF Core will give Stored Procedures first In my application I have three insert stored procedures that I need to execute using EF Core (this is in ASP. For this, a stored procedure needs to have an output parameter defined, and we need to define an output SQL parameter when we call that procedure: For EFCore to be able to transform a stored procedure return into an object, it must be specified. I then added this stored procedure to my EF . It used to be the case, that the return values -1 to -99 were reserved for system-generated I have an MVC application using Entity Framework. Return stored procedure value for EF Core Database. I followed this guide. Age from tableB B select C. EF core provides: DbSet<TEntity>. FromSqlRaw("EXEC dbo. You can change your Stored Procedure to always return a value and then check that value from your C# code EF Core Stored Procedure Discover How to Query a SP in LINQ . We will use the same structure as in our previous article. When I use this . For those who prefer Code First, this article will be perfect. FromSqlRaw returns the entity type (Car) which is why you have this problem. id, A. 0-rc1-final). Use AsEnumerable or AsAsyncEnumerable method right after FromSqlRaw or FromSqlInterpolated methods to make sure that EF Core doesn't try to compose over a stored procedure. SingleOrDefault(); I got Yeah if you're just using stored procedures, then either use SqlCommand/SqlConnection or Dapper. If you have duplicates across tables, and needs all, use UNION ALL. Product. _context. var Reg_ID = _db. InvalidOperationException: When executing a command, parameters must be exclusively database parameters or values. Share. var result = dbContext. 1 and later), you can use FromSqlRaw or FromSqlInterpolated to execute a stored procedure and map the results to a model. NET Core. the models are successfully generated by Power Tools and the tables work fine; but when i try to retrieve a result set out of a stored procedure and store it to a ViewBag to display on the View, the value stored at Viewbag is weird and has I have a function in the repository, GetForms, the purpose of the function is to call a stored procedure and return rows with data. GetValues(int[] TicketID,int? SQL Server doesn't allow composing over stored procedure calls, so any attempt to apply additional query operators to such a call will result in invalid SQL. Question you marked as similar is about Entity Framework which is different framework than EF Core, Question you marked as similar is about passing values to the stored procedure, where this question about using it with the EF query syntax. I need to start new project soon which will be ASP. So I am using the following code. With a little sleight of hand and some LINQ magic, it is possible to query scalar values using just Entity Framework Core and FromSql, without having to resort to raw ADO. It's really a BAD design. How to return a value from a stored procedure to EF. with NO COUNT ON what should I set as the return type? Seems that it should be simple but I cannot find an answer anywhere. Hot Network Questions What's an Unethical Drug to Limit Anger in a Dystopic Setting Using UNION should solve this issue. Net core application. I have to call it from Entity framework in . Would it be a correct understanding of EF to say that first it's calling the stored procedure and getting the results I am working on Entity Framework Core 2. context. When I call a stored procedure in MSQL Server using Entity Framework Core, I get a return value of -1. Here's some example code. Database context object returns only table type. EF Core 2. Working with Stored Procedure in Entity Framework Core. However in one of the method (Assign method below) I need to use stored procedure. FromSql(sqlQuery, parameters). So change your stored procedure to this: CREATE PROCEDURE dbo. I get a return value of -1, but when I execute this stored procedure in SQL Server, then the result is correct. Add the value to model similar to adding a value to a property. EF Core 2 executing Stored Procedure with OUTPUT param. Let's assume that our database has the following How can you call a stored procedure using Entity Framework Core and return the results using a generic class? In . Get output parameter value of a stored procedure using EF Core? 0. Not able to code for EF 6 calling stored procedure with output parameters? 0. 9. NET Standard Entity Framework, I'm able to call stored procedures and return generic like so: Update (EF Core 8. My goal is to return list of employees from my database (as a list or dbset): public class MyDataContext : DbContext { public MyDataContext(DbContextOptions&lt;MyDataContext& Return Value; The interface EF Core provides to call stored procedures is very similar to the mechanism used by the underlying ADO SqlClient interfaces. Will EF be good for this or should I use ADO. ToList(); How to fetch return value from stored procedure in entity framework? 0. 1 and I have this stored procedure call: public async Task<string> UserSessionGet(string user, string password, string ip) { IList<SessionItem> lst = null; Let’s see one example of calling a stored procedure with a return value. I couldn't find any API on context object. Code which calls the stored procedure. Here is my API controller: Using Entity Framework Core, we will list triggers and stored procedures and delete them in bulk. You could probably use this type of approach to define types for all table values in the database. What other modern or near future weapon could damage them? I am very new to Entity Framework 6 and I want to implement stored procedures in my project. NET Core 5 Web API. ExecuteStoreQuery Output parameter not being returned. So be Working with Stored Procedure in Entity Framework Core. The same is true if there is no RETURN statement at all in the procedure: the return value may be a negative number or it may be 0. CREATE PROCEDURE GetStudent -- Add the parameters for the stored procedure here @Name VARCHAR(50) AS BEGIN -- Insert statements for procedure here SELECT * FROM Student WHERE [Name] = @Name END GO Get item: A dialog box will open to select the stored procedure and return type; How to retrieve output parameter from stored procedure by EF code first. string sqlQuery = "Exec [ExampleStoredProc] @firstId, @outputBit OUTPUT"; var results = ExampleStoredProc_Results. 0 it was possible: var spParams = new This way, the values can be stored to a variable from the ExecuteReader. ExecuteSql still returns a value You need to Import the stored procedure as a Function. However, The command always returns -1 to retval, no matter what I set the stored procedure to do. Let’s define our data model and stored procedures. var list = _context. Tables were created correctly, but stored procedures and their results not. So my question really is, how do I call a stored procedure with Entity Framework Core, so that I can pass an Id and get a bool value returned. [Table1Type] AS TABLE( [Id] [int] NULL, [Name] [nchar](10) NULL ) I have a stored procedure with an input that defines the columns that are returned. Retrieve an Entity value to add to return parameter. ASP. Here is a sample stored procedure with two input parameters and an output parameter That stored procedure doesn't return a value, it sets an output parameter. code). In EF Core there is not quite yet an elegant way to fetch data from multiple tables by a stored procedure. [MySproc] @param1, @param2 etc. 0: execute stored procedures and mapping result into a list of custom objects. From what I can read, Entity Framework Core only accepts types of TEntity. 0), FromSql was used to execute custom SQL queries. ExecuteQuery to return non-mapped fields Entity Framework is ignoring NotMapped attribute. Unable to get boolean value from oracle stored procedure. The problem is that in many case you need to map a stored procedure to a DTO, for example, and the DTO is not part of your DbSet entities. AS INSERT INTO dbo. 1. int32, int32, string, int32. This solution provides methods that call a stored procedure and maps the How can I get int value in EF Core returned from a stored procedure in SQL Server?--Two tables, Employee and AspNetUsers-- CREATE PROCEDURE SP_GetIdEmployeeByUserName (@username varchar(100), @idemployee int output) AS BEGIN SELECT @idemployee = (SELECT e. NET / Entity Framework Core / SQL Server Procedures Returning Repeated Values. The stored procedure is declared as CREATE PROCEDURE [dbo]. public override long GetHostSequenceNumber(byte hostId, byte srvId) { var hId = new Npgsql. Use the following steps to solve this issue: Change your stored procedure like this (Don't use the keyword return in the stored procedure to return the value, Entity Framework cannot support Stored Procedure Return scalar values out of the box. This is my code: public async Task&lt;bool&gt; Login(EmployeeDO _loginDO) { var para Your code fails because you use First when the result of the query doesn't contains any record returned by the WHERE clause. 0. The legacy stored proc synopsis: Executing the stored proc in SQL creates the following code: DECLARE @return_value int EXEC @return_value = [dbo]. 18. Ask Question Asked 4 years, 3 months ago. EF Core executing stored procedure I have a stored procedure called GetContactsByUserId @userId INT. @Charlieface, this is not the similar question. statement inside the stored procedure. This is the number of affected rows. NET Core project. 2. Unlike a database view, stored procedure executes SQL statements that don't In Entity Framework 6, we had the option to run a stored procedure that returns a specific model object with code like this: context. FromSql("EXEC YourStoredProcedure") . g. Imagine a scenario where reading the StatusCode from a stored procedure is a necessity: CREATE At the end of this article, you will understand how to perform database CRUD operations using Stored Procedures in Entity Framework Core. sp_MapDetail] @Id Here is my stored procedure: DECLARE @RC int DECLARE @code nvarchar(50) DECLARE @parentId uniqueidentifier DECLARE @perId uniqueidentifier DECLARE @isDeleted bit -- TODO: Set parameter values here. Entity Framework Core. Id FROM Employee e JOIN AspNetUsers a ON e. EXECUTE @RC = [dbo]. . Parameter name: entityType" EF Core stored procedure different returning result. Basically we're calling a stored procedure and returning back on that CustomView object (which is a SQL view). The workaround we use in EF Core to execute stored procedures to get the data is by using FromSql method and you can execute stored procedure this way: List<Employee> employees = dbcontext. You know that a JSON format output is in a string format. Net? If your EF Core version supports it (EF Core 2. NET Core and I want to execute a stored procedure that makes a join between 5 tables and returns the count of line: If you're using EF, you don't need stored procedures. Hot Network Questions What's the difference (if any) between "self" and "consciousness"? I've ran into an issue I've never had before where I've created a stored stored using EF and two of the columns that are meant to be returning values around 2,950 - 3,100 are returning 0s. I have service class which typically use a DbContext for any CRUD operations. Both examples below. Name from tableA A select B. First create a stored procedure with OUTPUT parameters similar to the following (or use an existing one!): EF cannot return IQueryable from a Stored Procedure because the database engine itself doesn't provide a mechanism for selectively querying or manipulating execution of the script, you can't for instance do the following in SQL:. I want to pass MerchantID as null in some cases. id, B. Failed insert in db by ExecuteSqlInterpolatedAsync EF Core. Follow edited May 26, 2021 at 7:12. [usp_test] ( @result int OUT ) AS BEGIN --DO STUFF SET @result = 0 END Here is how I'm calling it from EF: My SP return 4 column. //----- // <auto-generated> // This code was generated from a template. #10925. ReturnValue" and "ExecuteScalar" command to get the value. SqlQuery<return type>("name", parameter) If there are no results returned e. I used Entity framework to execute stored procedure that would return some value (long). { get { return infoData; } set { infoData= value; } } I even tried using the verbatim operator If you're stuck with that stored proc as-is and it's returning column names incompatible with EF, The stored procedure does return data for MyObject, so I would like to use the MyObjects property, if possible. I want to pass a parameter having a null value to a stored procedure. Test(Name, Code) VALUES ( N'', 0) END or other I try with this code: How to execute Entity Framework SQLQuery stored procedure with return value parameter? 6. For e. i don't know how to call that SP with a null value on the parameter. Let's add a stored procedure to Northwind, that returns a single scalar result. Let's say I have a product table in SQL and stored procedure returns a set of products so we call it like Based on the documentation ExecuteSqlCommand should return the result of the stored procedure. net API's and it worked but now I have to call it from EF in . 7. The solution I put above was only needed because we use EF Core for 99% of the code and had a single stored How To Call Stored Procedures in EF Core. Get output parameter value of a stored procedure using EF Core? Related. Improve this answer. CREATE STORED PROCEDURE [dbo. 28. For point 1, please read this question: EF Core query stored procedure map New to . I've tried returning various integers and even calling RAISERROR in the stored procedure, but the return value is consistently -1. [GetAuditRecordPageCount] @Count INTEGER AS RETURN ((SELECT COUNT(Id) FROM AuditRecords) / @Count) + 1 And my call to the entity framework in C# is this: I have been trying to modify the accepted answer here which seems to leverage RelationalDataReader in order to get back 2 OUTPUT parameters for some calculated dates from an API that the Product Owners wished to be as much database driven as possible. ExecuteSqlInterpolatedAsync. ExecuteSqlCommand("EXEC MyStoredProcedure"); See this article for a bit more background information and various alternatives. Modified 4 years, 3 months ago. This is a new feature in EF Core 3. This value may be zero if the stored procedure includes a SET NOCOUNT ON directive. 7 I want to call a stored procedure that returns a scalar value. 0. What is a Stored Procedure? A Stored Stored Procedures can’t return values by definition but we can get a value from the Stored Procedure by means of output parameters – whose state is modified after a Stored Entity Framework Net Core 2. You need to create your DbContext class by inherting the DbContext class from EF. 4 and C# 4. net core entity framework. EF: Non-nullable UpdateException for NotMapped property. The only method I've seen to build a raw SQL query in Entity Framework Core is via dbData. Skip to main content How to add a stored procedure that returns a scalar value to Entity Framework model and call it from the Entity Context? 4. ExecuteSqlCommand() The return value of the query would always be null, but your out parameter would at least get populated. [sp_Procedura] AS BEGIN SET NOCOUNT ON SELECT * FROM dbo. 0? Below is the Stored Procedure that takes three parameters. NET 7. I want to just call a procedure as void instead of returning data. This assumes your ReferrerStatisticResult is just a In EF Core, if you execute a stored procedure using one of your DbSet entities then it will map it automatically. var sql = _context. ClassA. I am using EF Core 3. CsvExports . Whether these negative numbers have any meaning, is a bit difficult to tell. [SelectNextCounter] ( @CounterName nvarchar(50) ) AS UPDATE counter SET NextValue = NextValue + 1 WHERE The following code in a . [up_GetJobSt I am totally confused regarding how to use Stored Procedures using Entity Framework Core. SqlQuery<SomeModel> I can't find a solution to build a raw SQL Query for my full-text search query that will return the tables data and also the rank. I am using the Northwind database for the sample code. We need to use "ParameterDirection. As far as I understood to call a stored procedure it must returns an entity model. Resulting code: I have installed EF Core 5 Power Tools to Add a DB with stored procedure to an ASP. ToList(); } I have a stored procedure that should return a login by id: CREATE PROCEDURE MyProcedure ( @id INT, @login NVARCHAR(50) OUTPUT ) AS BEGIN SELECT ID , Login Get output parameter value in EF Core with stored procedure but without return table data. for a little more context i'm using EntityFramework 6xx You can execute raw SQL statements in various ways, but this is probably the best for your scenario (executing a stored-procedure that returns no results and is not tied to a specific table). i've a stored procedure on sqlserver 2008 and one of the parameters accept null values. I'm current using ASP. Consider the below stored procedure which inserts a data in the Students table in the MS SQL database: CREATE PROCEDURE CreateStudent @FirstName Varchar(50), @LastName Varchar(50) AS BEGIN SET NOCOUNT ON; Insert into Students( [FirstName] ,[LastName] ) Values (@FirstName, @LastName) END GO Your stored procedure is currently returns a scalar value. Param from tableC C Usually, I would handle a single result stored procedure with Entity Framework Core like this: Context: I'm using EF 6 with . 0 seems to require that the results of executing a stored procedure have a primary key. 2 Calling Stored Procedure Returning 0 results. 2 application using EF Core. [SP_GetOrgTree] @code ,@parentId ,@perId ,@isDeleted GO In SQL, when edit code like this: procedure is run with While retrieving the results using stored procedure how can I retrieve and store multiple result set in view model in . In PostgreSQL we create a function to generate a password: CREATE OR REPLACE FUNCTION generate_password() RETURNS text AS $$ BEGIN RETURN (SELECT Entity Framework stored procedure returns null object 0 An exception of type 'System. How to return values from a dynamic SQL Stored Procedure to the Entity Framework? 3. Stored procedure which I have to call returning result which I have to catch. Database. 5? The output parameter got a value 'null' of Stored Procedure. NET code is trying to read a result set; something that would be "returned" by using a SELECT . Here are the stored procedures spInsertPerson create proc First at all, the result from stored procedure is not a table, I mean an user table. FunctionReturnVarchar({0});", id); got the . SELECT Id, Title FROM [dbo]. ToList(); But for Create, Update, and Delete, we use ExecuteSqlCommand like the one below: Call this store procedure in EF: And for Entity Framework Core 2. 3. One usage is to retrieve data from raw sql queries. FromSqlRaw() But my scenario doesn't have any type except string. Unlock the power of EF Core by using Stored Procedure to save entities by keeping the logic in your database. Using SQL Server named parameters with ExecuteStoreQuery and ExecuteStoreCommand I had a project running on Postgresql. – Panagiotis Kanavos. tableA. Here is my stored proc: CREATE PROCEDURE [dbo]. I created a class of results tsp_GetDocuments_Result and a partial I'm trying to use stored procedures with new Entity Framework Core. I believe this doesn't work, because Entity Framework Core does not know what datatype it should expect. If the stored procedure return an anonymous type, how do I retrieve the data? And This is how using EF Core you execute a stored procedure with input and output parameters. Right click Function Imports on Model Browser then "Add Function Import" 6- Write a custom name (NOTE: use this name codebehind) Chosee Stored Procedure. ; In the Add Function Import dialog, enter the name you want your stored procedure to be referred to in your model for example GetCountryListSP, choose your procedure from the drop down list, and choose the The FromSqlRaw method in EF Core executes raw SQL queries or stored procedures that return data, mapping the results to entity types. Scalar function is a function that returns a single value. ExecuteSqlCommand() How to use a SQL The best bet is to use OUTPUT parameter in your Stored Procedure. In other words, if the procedure returns 20 unique records, the API returns the first record 20 times. I'm using EF Core 2. Original: You can utilize the Query Types introduced in EF Core 2. ProcName @P", parameter). We will also refresh our triggers using a sample sql file. I am using raw SQL with a stored procedure to compute some values: private TestContext context; public TestRepository(TestContext tContext) { context = tContext; } public IEnumerable<test> GetTests(User user) { return context. My code: I know the preferred method for returning scalar values from stored procs is either using RETURN or an OUTPUT parameter. This is my code to get data from the stored procedure using EF: How to call a stored procedure that returns a list<int> using . net core. FromSql() DbContext. Using PostgreSQL. SQL type to use it as your list filter: CREATE TYPE [dbo]. Handle output parameter of an Oracle stored procedure using C# code. Added a Stored Procedure into the EF; Right Click on the EF designer and add a function import. Exec Stored Procedure with output parameter in Entity Framework Core 2. Entity Framework 7 FromSql stored procedure return value. So, I think there are two possible solutions for your question: Work with pure ADO. EF Core Stored Procedure FromSqlRaw Does Not Give Updated Values. Ask Question Asked 10 years, 10 months ago. NET Core 2. Raw SQL queries can return regular entity types or keyless entity types that are part of your model. First FindStudents, a procedure that returns a list of Studentsfiltered by the name: Then FindStudentsA Working with Stored Procedure in Entity Framework Core. 1 version. var query = Context. Copy link kokilasanjeewa commented Feb 4, 2022. In earlier versions of EF Core (prior to version 3. NET Core application. Test, C. Right-click on the workspace area of your Entity model and choose Add -> Function Import. Ask Question Asked 4 years, 5 months Calling stored proc with LINQ . ExecuteSqlCommand("SPName"); With Entity Framework Core removing dbData. From the documentation (bolding mine):. 1 Why stored procedure out parameter is not getting read by entity framework's ExecuteSqlCommand method? Load 7 more related questions Show I tried just assigning it to a list, but it still does not return data. NET Core Web API. Viewed 355 times 0 . [Channels] WHERE BusinessModelId = @BusinessModelID UNION SELECT Id,Title FROM [dbo]. My stored procedure looks like this: CREATE PROCEDURE [dbo]. EF Core provides the following methods to execute a stored procedure: DbSet. 1 I created a context class, entity classes, and classes to store the stored procedure output. Is there a way to keep the old way of calling stored procedures with entity framework 6. SqlQuery<MyModelClass>("SomeStoredProcedure @p0", param1). Than you can take it to datable and you are able to return value with When we return a value from Stored procedure without select statement. 0/Sql server). Value }; } return new SqlParameter How can I execute the stored procedure from the database using entity framework core and return multiple resultsets? This is my context class and stored procedure which I want to call. Net 5, but not sure if Entity Framework will fit for the job. Here, you will learn how to execute the database stored procedure in Entity Framework Core. CREATE PROCEDURE IsEmailExists @Email NVARCHAR(20) AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. All reactions Scaffold I did implement it and it worked,now I can just use the DTO to receive the data a stored procedure returning the columns id and description always 'public class FilterProcedureDTO { public FilterProcedureDTO() { } public int id { get; set; } public string description { get; set; } }' <br/> I have a working function in my posgres called "GetDriverStatusReport" will return some datas. query. { ParameterName = name, Value = value. Unlike a database view, stored procedure executes SQL statements that don't return data. What is NotMapped Field not get assigned by values on procedure calling in . I tried to get the return value from a SQL Server stored procedure. I understand that ExecuteSqlCommand does not work for select and can be used only for update to database. Hot Network Questions A superhuman character only damaged by a nuclear blast’s fireball. Value as bool? ?? default(bool); return results; } The stored proc returns SQL Server stored procedures can return data in three different ways: Via result sets, OUTPUT parameters and RETURN values - see the docs here. from stored procedure I am returning records for below two queries. I'm using the syntax from the MS Docs and I've checked these other examples and I just don't see why my code is failing. Learn how to create stored procedure and map your entities to it when saving them. You can construct this query with LINQ directly using EF. Can't get the return of this stored procedure in Entity Framework. In this way, you will minimize your need for database access and ensure that your new changes are automatically applied to the database. 2 to EF Core 3. How can I iterate through the result? EF and stored procedure returning dynamic result. Currently, my only idea is to add a 2nd property without a filter, but this isn't ideal. A stored procedure can have multiple output parameters. Is there a way around this? Not all stored procedures return uniquely identifiable rows. Net core console application (EF core 2. I've used this answer as a guide. Unfortunately, I haven't found a way to call a stored procedure that returns an entity. You can also pass a parameter value using C# string interpolation. EX: _context. The above issue is the reason why I feel this article is Using code-first methodology and EF 4. Instead, adjust your stored procedure to return unique IDs for unique rows. [Departments] WHERE I have called a stored procedure with EF code-first DbContext before, but I've tried several ways of doing it tonight and I am not getting any progress. I have a stored procedure like this: CREATE PROCEDURE InsertTest(@p1 NVARCHAR(50) , @p2 INT) AS BEGIN INSERT INTO dbo. Bar . Also I want my results in a DataTable from one stored procedure so that I could create a table value parameter to pass into a second stored procedure. NullReferenceException' occurred in EntityFramework. Employee . You define an array of parameters, execute the command and inspect the parameters. Better to name the Stored Proc's params and give parameterized values to those. FromSql("SQL SCRIPT"); which isn't useful as I have no DbSet that will You can do it with Raw Sql en EF Core, Similar aproach in EF6, but you can't get an IQueryable. First of all, this is wrong as my stored procedure deletes multiple entries from a table. But It will add two columns in MainTable. Sample Parameters. using (var context = new MyContext()) How can I make a Stored procedure return a bit value? 0. There is no Berks table in the database, but you have your stored procedure return values to play with as you wish. Ask Question Asked 5 years, 7 months ago. Set<string>() . EF Core is only going to be useful for direct queries to tables, mapping the results to entities, and the dynamic SQL generation that IQueryable<> gives you. [insert_department] @Name [varchar](100) AS BEGIN INSERT [dbo]. I have a stored procedure as follows: ALTER PROCEDURE [dbo]. However, it is reasonably straight forward to achieve by dropping down to the ObjectContext and using the Translate method to copy results from a DbDataReader into entities in your domain model. I have an ASP. 0 finally added support for Raw SQL queries for unmapped types via SqlQuery or SqlQueryRaw, so now you can simply use. 1). Entity FOR JSON AUTO END Having a stored procedure as previous, using EF Core 2. NET and ExecuteScalar. This is how it's called from my C# program using EF context: bool productCount = context. var test = context. 1 within . Returning a True or False value in a Stored Procedure. Getting stored procedure output parameter with LINQ and Entity Framework. e. The stored procedure looks like this: CREATE PROCEDURE [dbo]. Hot Network Questions Traversal Heap Sort (No Extractions) Citing volatile sources Mushy water-logged front yard, aerate? Using EF, I'm trying to execute a stored procedure that returns a single string value, i. [CustomerKeyChecker] @ldccode = 'nstar' --SET @listofCodes = 'CLP, UIC, NSTAR, NSTARB, NSTARC, PSNH' Procedure. I am creating an ASP. Ask Question Asked 1 year, 2 months ago. A stored procedure in SQL is a group of SQL queries that can be saved and reused multiple times. NET Core Web API 3. [usp_GetCompanyLogSheets] @Period = N'June 2017' SELECT 'Return Value' = @return_value It seems simple enough, but for some reason return_value is consistently 0. It doesn't return arbitrary values (like the result of COUNT()). 3. The strange part is, the result of the API is the first row repeated for the amount of records that the procedure returns. Database . Use an external approach from EF Core. The stored procedure could be called from ActionResult. ExecuteSqlCommand() Using FromSql. 5- Now we can import SP from Database. 6. NET MVC site to see it. answered May Entity Framework returns the wrong value from stored procedure. Copy paste the code below into your main Program. net core 3. FromSqlRaw("EXEC core. The MVC site uses code-first, and the MostRecentOrderDetail object is correctly mapped to the columns of the stored procedure. FromSql but that is only available on entities, eg. I'm migrating my EF6 project to EF Core with . One way or another when I run the Store Procedure I should, I hope, be able to access all three values for 'Results', 'Messages', and 'Return Value'. Note that DbContext is injected as Scoped instance. [SP_N EF Core 2. Can I In my Entity Framework based solution I need to replace one of my Linq queries with sql - for efficiency reasons. So my question is how to select columns from multiple tables in the stored procedure in Entity Framework Core. But unlike FromSqlRaw() When running a procedure on EF Core 3 using FromSqlRaw that updates values in the table, EF DOES NOT return the updated values when I query the database for those changed values. FromSql("select dbo. The stored procedures are executing using the DbContext. I am using EF and I am calling a stored procedure. 0+): EF Core 8. Lets build one. The stored procedure return these types in the result: ContactId INT, ContactName NVARCHAR(200) I have created in C# the object called - Contact: return await _context. SearchForData_SP() WHERE Field2 IS NOT NULL ORDER BY Field3 I then created a small API that runs these three procedures and returns the results. FromSql(). I recently migrated from EF Core 2. This method executes the stored procedure which returns entity data Using . How am I supposed to access those results and how should I call the sql command? Normally we have to use . NET, execute data reader and cast the result to result models. I tried with this code, but this does not work. BUT there is a work around): Microsoft’s Entity Framework (EF) Core can be used to map or import SPs as functions but, unfortunately, EF Core doesn’t natively support the retrieval of complex results from stored procedures. I tried researching on this but I couldn't Have a scenario to execute a stored procedure and read the return value in EF Core, that returns a single value. Functions. EF Core stored procedure different returning result. Return Values from Stored Procedures. Mapping a class to a stored procedure resultset "Value cannot be null. To reproduce create a new console app c# with . For example: result1FromGetDataMethod = {id=xxx, datetime=xxx, isValid=xxx, } result2FromGetDataMethod I have a stored procedure with a JSON format output. FromSql("EXECUTE dbo. Changing the stored proc to return the value another way isn't desired, since it either requires updating the legacy app or maintaining a nearly duplicate stored proc. 0 Execute Stored Procedure with parameters and return value. The stored procedure returns a 0 or 1. tests. In order to use Named params when calling your SP, without worrying about the order of parameters. If return type is nullable you can change from properties window . EF Core provides the following methods Erik Ejlskov Jensen shows us how to retrieve the return value from a stored procedure using Entity Framework Core: SQL Server stored procedures can return data in The return value is the number of rows affected by the stored procedure. If datatypes varies between tables, you may need to cast column values as well in order to make a uniform result. Select * LMS_Survey Select * from LMS_SurveyQuestion Select * from LMS_SurveyQuestionOptionChoice and below is view model for two tables. How To Call Stored Procedures in EF Core A stored procedure in SQL is a group of SQL queries that can be saved and reused multiple times. Though this may require adding the stored procedure to a separate layer, that simply runs the stored procedure and adds the value to model afterwards. Net Core - Entity Framework - Call Stored Procedure With Execute Stored Procedure using ExecuteSqlRawAsync() The Entity Framework Core ExecuteSqlRawAsync() method is used to execute Stored Procedures and Raw SQL in asynchronous manner. First step is to write a method that create a DbCommand from the DbContext. Everything is working fine until now. I have a stored procedure that calculates begin and end dates from the SQL queries I have stored in a I'm trying to use ExecuteSqlCommandAsync from EF Core to get the result of a select query in a somewhat odd legacy stored procedure that has an empty RETURN statement. The support for stored procedure in EF Core is similar to the earlier versions of EF Code first. Get return value from ExecuteSqlRaw in EF Core. Net Core and Entity Framework Core 5. heytoday I config the entity framework core 6 and fetch he data list succefulybut i call the stored procedure and it returned 1 whyappMapGet34PlantsInfo34 FromServices ModelContext db gt var tr dbplantsToListsuccefully return dbDatabaseExecuteSqlRaw34exec GetPlants34returend 1i cant see ExecuteSqlCommand optionalter proc GetPlantsasbegin set Your problem is this: you're returning the value from the stored procedure (using RETURN @paramter2), but your . SqlQuery&lt;bool&gt;("EXEC [dbo]. Function Import Name - MyFunction, complex type. My sample SP as below Return stored procedure value for EF Core Database. There's no advantage to using them (there was long ago, but not anymore). Since EF Core 5 is adding support for table values, maybe they'll do it I'm using Entity Framework Core and want to receive dynamic data from my stored procedures. Here is a simple stored procedure, it will return all the records from Customers table when executed. DateDiffDay How do I access the 'Results', 'Messages', and 'Return Value' of a Stored Procedure using Entity Framework 4. So we have a Studentclass: And the Courseclass: We will also define our stored procedures. Hot Network Questions Does a consistent heuristic have value 0 on a goal state? more hot questions Question feed I have an ASP. I have this C# method which calls a valid stored procedure which performs insert statement. This is a Stored Procedure that I created in the database and want to call using entity framework core. DECLARE @return_value int EXEC @return_value = [dbo]. EF Core Execute SQL with parameters. What you want to look at is keyless entity types. [dbo]. StoredProcedure2 AS declare @parameter2 I am using EF Core 7 and trying to call a stored procedure with the following code, but the EF Core query generator throws an exception. SELECT Field1, Field2 EXEC dbo. EEPayableExtract @p_PMS = {0}, @p_Type = {1}", I want to load 3 different models from a SQL Server stored procedure which returns 3 different tables, like: select A. the status of an SQL Agent Job. Here my current setup for calling procedures and fitting the data into a model. *EDIT I have a stored procedure in SQL Server which has cursor output parameter like this: create stored procedure ProcedureName (@param1 varchar, @pcursor CURSOR VARYING OUTPUT) as begin end The cursor is linked to multicolumn value. I have been able to reproduce this behavior. But lets say that I have a stored proc that returns the value using a select statement: CREATE PROC spReturnNumber AS SELECT 1 Is it possible to get this value from within another stored proc? Dear Friends, I would appreciate an explanation of how to capture the values of output parameters when calling stored procedures in SQL Server 2019 from Entity Framework Core 6. User. Net Core with Entity Framework 3. I have written stored procedure to get claims list via Context Query-Type which take three parameters where two of them are I want to execute a stored procedure to delete records with no return value using the pattern: dataContext. First assumes that there is always something in your IEnumerable to return. [Problems] Most answers are brittle because they rely on the order of the SP's parameters. 1. I have done the following: Created an EF data object, Customer. edmx model and created this Function Import: Querying the stored procedure shows me that it returns a result set consisting of int values - I therefore define the return value I have an existing database with lots of complex stored procedure and I want to use those procedure through EF 4. – When I interrogate the stored procedure using SQL Management Studio, it comes back with the correct value. The application will be triggering several stored procedures per minute and I need output parameters. ToList(); outputBit = outputBitParameter. This is due to limitations in EF Core’s Will return a DbSet where Berk is just an object that matches the return values from the stored procedure. How can I call this stored procedure with a string output and render the result to the client? ErikEJ changed the title Discussion for: Using SQL Server stored procedure return values with EF Core Get a SQL Server stored procedure return value with EF Core Jan 26, 2022. What worries here is that if I choose to go with this approach, I'll have to do ALOT of changes in my code which I'm trying to avoid. Thus, you'd have to include a primary key column in your select statement, or create a temp table with a I have a stored procedure with table valued parameter. IdUser Then I removed [NotMapped] from both the properties and added migration, in this case, its returning proper value. In EF Core 2. fug figc boma bbogevy lklx isijrx uiflv dkldqhd ewp cpxx