You can’t do 2 sets of values like your trying to do with an INSERT statement. Your effectively doing: INSERT INTO Controller_Forecast(C1,C2…) VALUES(…loads of values…) VALUES(…Loads of more values…) This isn’t valid. To insert 2 sets of data, which is what it looks like you’re trying to do you can do 2 INSERT INTO statements … Read more
var results = from kvp in source group kvp by kvp.Key.ToUpper() into g select new { Key= g.Key, Value= g.Average(kvp => kvp.Value) } or var results = source.GroupBy(c=>c.Name) .Select(c => new (c.Key, c.Average(d=>d.Value))); 3 solved Remove duplicate items and calculate average values using LINQ
Based on the view you want to display, your models are incorrect and they need to be public class MemberPaymentVM { public string MemberName{ get; set; } public string TransactId { get; set; } [DisplayFormat(DataFormatString = “{0:d}”)] public DateTime PayDate { get; set; } public IEnumerable<CategoryAmountsVM> Payments { get; set; } [DisplayFormat(DataFormatString = “{0:C}”)] public … Read more
If you store Ids as comma separated string – you always have TABLE/INDEX scan. If your table is small it can be enough. With SecondaryTable table which stores Ids associated with main table there a lot of other plans: You can leave as is and trust or not DB Engine optimiser query = query.Where(x => … Read more
You could use Enumerable.Except on these fields: var sendIdentityFields = from s in sendTable.AsEnumerable() select new { BUS = s.Field<int>(“BUS”), IDENT = s.Field<int>(“IDENT”), STATION = s.Field<int>(“STATION”), REF1 = s.Field<string>(“REF1”), REF2 = s.Field<string>(“REF2”), REF3 = s.Field<string>(“REF3”), REF4 = s.Field<string>(“REF4”), REF5 = s.Field<string>(“REF5”), REF6 = s.Field<string>(“REF6”), REF7 = s.Field<string>(“REF7”), REF8 = s.Field<string>(“REF8”) }; var receivedIdentityFields = from … Read more
A variation on Save’s solution: var fixedSet = new HashSet<int>(){A,B,C}; bool result = PossibleSolutions.Any(x => fixedSet.SetEquals( new[] { x.CapacitorALocation,x.CapacitorBLocation,x.CapacitorCLocation })); 3 solved List permutation existance
Here is what is doing this piece of LinQ : The code is using the Panels Entity set of you dbContext, that’s mean the Panels table in your database. Then, you are including an Invoice Entity, because it is part of your Panels one. It is most likely another table with a relation with Panels. … Read more
This code returns ordered names of all men in collection: public static IEnumerable<string> OrderedMales(IEnumerable<Person> persons) { return persons.Where(p => p.Sex == Gender.Male).OrderBy(p => p.Name).Select(p => p.Name); } 0 solved How do I import data from a class C#
Introduction ASP.NET MVC is a powerful web development framework that allows developers to create dynamic, data-driven web applications. It is a great platform for creating complex queries that can be used to retrieve data from a database. In this article, we will discuss how to create complex queries in ASP.NET MVC and how to use … Read more
Forget all you learnt with ASP and VB apart from the base concepts like layers and learn about MVC, MVVM and LINQ, probably with Entity Framework for the backend. 0 solved ASP.NET MVC – Complex Queries [closed]
You can’t return anonymous types from a method (i.e. select new { … }). You need to create a class for that or use Market_Masters if it is of that type, e.g.: public IEnumerable<Market_Masters> GetMaster() { var x = from n in db.Masters join chil in db.ChildMasterMasters on n.MasterId equals chil.MasterId into t select new … Read more
This can work with the linq extension Aggregate. My seeding is not very elegant but that is easy enough to change. The results variable will contain the array of arrays and they are actually of type List<T> because that way they can be easily grown in the function where an array [] is always of … Read more
You can order them by using Order on DataMember like this: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.Serialization; namespace Mvm.SATWeb.Domain { [Serializable, DataContract] public class puntoDeAtencion { public puntoDeAtencion() { } [DataMember(Order = 0)] public string codigoPuntoAtencion { get; set; } [DataMember(Order = 1)] public decimal montoIngreso { get; set; } [DataMember(Order … Read more
There is the String.Join-method designed for this. var mystring = String.Join(” OR “, idsArr); This will result in the following string: export_sdf_id=3746 OR export_sdf_id=3806 OR export_sdf_id=23 OR export_sdf_id=6458 OR export_sdf_id=3740 OR export_sdf_id=3739 OR export_sdf_id=3742 Note that the brackets are omited as they are not needed for your query. 1 solved How to create string from … Read more
Based on the referenced answer I tried something that doesn’t create Lookup‘s but Dictionary‘s instead. IMHO that’s the only thing you can cut that will actually save some time. Skipping creation of the HashSet (as proposed in my rushed comment) is not an option as this will lead to the duplication of all joined pairs. … Read more