C# 存储过程 FromSqlRaw 错误键已存在

Question

I have a problem to run a stored procedure in EF. If I execute the procedure from SSMS, it works fine, but from code I get this error:

System.ArgumentException: An item with the same key has already been added. Key: Id

at System.Collections.Generic.Dictionary 2.TryInsert(TKey key, TValue value, InsertionBehavior behavior) at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable 1 source, Func 2 keySelector, Func 2 elementSelector, IEqualityComparer 1 comparer) at Microsoft.EntityFrameworkCore.Query.Internal.FromSqlQueryingEnumerable 1.BuildIndexMap(IReadOnlyList 1 columnNames, DbDataReader dataReader) at Microsoft.EntityFrameworkCore.Query.Internal.FromSqlQueryingEnumerable 1.Enumerator.InitializeReader(DbContext _, Boolean result)
at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.Execute[TState,TResult](TState state, Func 3 operation, Func 3 verifySucceeded)
at Microsoft.EntityFrameworkCore.Query.Internal.FromSqlQueryingEnumerable 1.Enumerator.MoveNext() at System.Collections.Generic.List 1..ctor(IEnumerable 1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable 1 source)
at MyseExchange.Controllers.UserController.GetMyTeamByUserId(Int32 userId)
at lambda_method5(Closure, Object )
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.TaskOfActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|24_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|19_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
at Microsoft.AspNetCore.Routing.EndpointMiddleware.g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

This is my code:

var param = new SqlParameter[] {
                        new SqlParameter() {
                            ParameterName = "@userId",
                            SqlDbType =  System.Data.SqlDbType.Int,
                            Direction = System.Data.ParameterDirection.Input,
                            Value = 36
                        },
                        new SqlParameter() {
                            ParameterName = "@date",
                            SqlDbType =  System.Data.SqlDbType.VarChar,
                            Direction = System.Data.ParameterDirection.Input,
                            Value = testdate
                        }};

List<MyTeam> studentList = _context.MyTeam.FromSqlRaw("[dbo].[getMyTeamByUserId] @userId, @date", param).ToList();

I can not understand where the problem is, thanks in advance for the help

Stored procedure:

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

-- =============================================
-- Author:      Stefano
-- Create Date: 
-- Description: 
-- =============================================
CREATE PROCEDURE getMyTeamByUserId
    (@userId bigint = 0,
     @date varchar(100) = '')
AS
BEGIN
    SET NOCOUNT ON

    SELECT
        [m].[Id], [m].[PlayerId], [m].[PurchaseDate], 
        [m].[PurchasePrice], [m].[UserId], 
        [p].[Id], [p].[Active], [p].[ActiveOnWallet], 
        [p].[CountryOfBirth], [p].[DateOfBirth], 
        [p].[FirstName], [p].[Foot], [p].[Heigth], [p].[IsLock], 
        [p].[LastName], [p].[MarketValue], [p].[MatchName], 
        [p].[Nationality], [p].[NationalityId], 
        [p].[PlaceOfBirth], [p].[PlayerId], [p].[Position], 
        [p].[ShirtNumber], [p].[SquadId], [p].[Status], 
        [p].[TransfertMarketId], [p].[Type], [p].[Value], 
        [p].[Weigth], 
        [s].[Id], [s].[CompetitionId], [s].[CompetitionName], 
        [s].[ContestantClubName], [s].[ContestantCode], 
        [s].[ContestantId], [s].[ContestantName], 
        [s].[ContestantShortName], 
        [s].[TournamentCalendarEndDate], 
        [s].[TournamentCalendarId], 
        [s].[TournamentCalendarStartDate], [s].[VenueId], 
        [s].[VenueName], 
        [u].[Id], [t0].[Id], [t0].[Date], [t0].[DevTurn], 
        [t0].[FullDate], [t0].[PlayerId], [t0].[Value]
    FROM
        [MyTeam] AS [m]
    LEFT JOIN 
        [User] AS [u] ON [m].[UserId] = [u].[Id]
    LEFT JOIN 
        [Player] AS [p] ON [m].[PlayerId] = [p].[Id]
    LEFT JOIN 
        [Squad] AS [s] ON [p].[SquadId] = [s].[Id]
    LEFT JOIN 
        (SELECT 
             [t].[Id], [t].[Date], [t].[DevTurn], [t].[FullDate], 
             [t].[PlayerId], [t].[Value]
         FROM 
             (SELECT 
                  [s0].[Id], [s0].[Date], [s0].[DevTurn], 
                  [s0].[FullDate], [s0].[PlayerId], [s0].[Value], 
                  ROW_NUMBER() OVER (PARTITION BY [s0].[PlayerId] ORDER BY [s0].[FullDate] DESC) AS [row]
              FROM 
                  [Stock] AS [s0]
              WHERE 
                  [s0].[Date] <= CONVERT(datetime, @date)) AS [t]
        WHERE 
            [t].[row] <= 1) AS [t0] ON [p].[Id] = [t0].[PlayerId]
    WHERE 
        [u].[Id] = @userId
    ORDER BY 
        [m].[Id], [u].[Id], [p].[Id], [s].[Id], 
        [t0].[PlayerId], [t0].[FullDate] DESC, [t0].[Id]
END

Answer 1

This may not be the only problem, but I do see one thing that's an issue. You're returning a column called Id multiple times in your select statement. That works in SSMS but will fail when calling it from.FromSqlRaw(). I believe the

"An item with the same key has already been added. Key: Id

at System.Collections.Generic.Dictionary2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)" 

error is referencing the attempt to insert these returned values into the List of class MyTeam. Your returned columns need to exactly match the class MyTeam you're returning them to.